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Bibby Transmissions Group Taper Grid Resilient Couplings

Gear Couplings

General Information

Application Service Factors

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The above service factors are for generalguidance only and should be considered asa minimum. They are complimentary tocustomers specialized knowledge of theirown equipment.

Reciprocating Engines

For drives where the operation is near oractually passes through a major torsionalnatural frequency, a mass elastic analysis ofthe system is advised. When the ServiceFactor in Table 1 is greater than 2.0 consultyour supplier or Bibby Transmissions.

Application Service Factor

Agitators ............................................................. 1.0

BlowersCentrifugal...................................................... 1.0 Lobe/Vane....................................................... 1.25

Clay Working MachinesBrick press, Pug mill, Briquette machine...... 1.75

CompressorsCentrifugal...................................................... 1.0 Lobe/Rotary .................................................... 1.25 Reciprocating:1 to 3 cylinders ............................................... 3.0 4 or more cylinders ........................................ 1.75

ConveyorsUniformly fed horizontal:

Screw, Apron, Assembly, Belt, Chain, Flight, Oven ........................................ 1.0

Heavy duty:Dredge. Inclined belt and screw ................... 1.5 Reciprocating.................................................. 3.0

Cranes and HoistsMain hoist - medium duty/mine haulage..... 2.5 Main hoist - heavy duty................................. 3.0 Long or cross travel/Slew or luff skip hoist/slope............................................... 1.75

Crushers............................................................... 2.5

Dredgers .............................................................. 2.0

ElevatorsCentrifugal and gravity discharge .................1.25

FansCentrifugal.......................................................1.0 Forced draught................................................1.5 Induced draught with damper.......................1.5 Mine/Cooling tower....................................... 2.0 Induced draught without control................. 2.0

FoodBeet Slicer ....................................................... 1.75 Cereal cooker ................................................. 1.25 Dough mixer................................................... 1.75 Meat grinder .................................................. 1.75 Bottling, can filling ........................................ 1.00

GeneratorsEven Load ....................................................... 1.0 Hoist and Railway service .............................. 1.5 Welder load.................................................... 2.0

Kiln....................................................................... 2.0

Laundry Machines .............................................. 2.0

Application Service Factor

Machine Tools Main drives ..................................................... 1.5 Notching press/Planer/Punch......................... 1.75 Auxiliary and traverse drives......................... 2.0

Metal Working Presses ............................................................. 2.0 Hammers......................................................... 2.0 Straighteners .................................................. 2.0 Bending........................................................... 1.5 Shears.............................................................. 1.5 Punching......................................................... 2.0

Mills (Rotary type)Ball or Pebble ................................................. 2.0 Rod or tube .................................................... 2.0 Dryer and cooler ............................................ 1.75

MixersDrum ............................................................... 1.5 Concrete (continuous or intermittent) ......... 1.75 Grizzly ............................................................. 2.0

Oil IndustryChiller.............................................................. 1.25 Oil well pumping (

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Type of Prime Mover

HP or Torque Rating

Rotational speed rpm

What application the coupling is to be used on

Type of duty (eg. reversing orunidirectional, frequency of starts andpeak torques)

Diameter of drive and driven shafts

Any gaps such as limited end float

Any other physical limitations

Any other specific needs

Note: Where high peak loads and brakeapplications please contact BibbyTransmissions.

Information Required

Rating - Information may be found onthe nameplate of the motor etc.

Service Factor - When selecting acoupling it is important to consider thecharacteristics of the drive and drivenequipment. A figure known as the ServiceFactor has been calculated based on anaverage of a wide range of applications.This can be used as a guide in the selectionprocess and is displayed in Table 1 onpage 2.

Size - In making the selection from thefollowing product groups which is mostsuited to the application, select a sizeequal to or, higher than the ratingcalculated. Particular attention should bemade to bore sizes and guidance for thisis in the Table related to Max Bore Sizes.

Speed - Ensure that the speed iscompatible.

Should full information not be suppliedto Bibby Transmissions at the time ofordering it will be the responsibility ofthe customer to ensure that the couplinghas been correctly selected.

As our policy is one of continualimprovement, this specification is not tobe regarded as binding in any way, and issubject to alteration without notice.Certified drawings are available onrequest.

Table 2Maximum Coupling Bore Sizes

Duty Class Load Classification Max. Bore Size

Uniform Steady load, soft start, very rarely Cataloguesubjected to maximum loading Maximum Bore

Medium Steady load with superimposed Boss Diametercyclic load fluctuations 1.45

Heavy Repeated maximum load fluctuations/ Boss Diametershock loads 1.5

Extra Heavy Regularly subjected to fully Boss Diameterreversing maximum loads 1.6

Bibby Transmissions Taper Grid Resilient Couplings

Series 2000H and Series 2000V

High Performance

The Bibby Transmissions Series 2000 TaperGrid Coupling continues that tradition.The tapered grid is made from hightensile alloy steel which is carefullyformed to the grid shape beforehardening and tempering undercontrolled conditions. The grid surface isthen shot-peened. This process leaves thegrid spring with a residually stressedsurface layer which is in compression andwhich impedes the propagation of cracks.Since nearly all fatigue and stresscorrosion failures originate at the surfaceof a part, the layer of compressive stressinduced by shot-peening produces adramatic increase in the working life andfatigue strength of the grid. Thistechnological improvement inmanufacturing process coupled withprecise monitoring of raw materialspecification and control of trapezoidalshape, permits Bibby Transmissions tooffer state of the art grid springs of highperformance and reliability.

Scientific Design

The hub is precision manufactured fromhigh quality materials, with the hub toothprofile scientifically designed to permit

progressive loading under torsional shockconditions. The combination of taperedgrid and precision manufactured hubprovides a high performance transmissionarrangement which is easily assembled,extremely capable of cushioning shockloads tolerant of drive misalignments.

Long Life

While the coupling is designed for longlife under arduous conditions,maintenance and taper grid replacementcan be performed quickly and easilywithout the need to move and realignconnected equipment.

Two cover design options are available inthe Bibby Transmissions Series 2000 rangeof couplings. Both designs have beencarefully engineered to match the qualitystandards of the key components and toprovide a shaft coupling which is highlyreliable and easy to install.

Recommended Fits between Shafts and Hubs

Coupling bore tolerances for sizes up toand including 2090T can be specified tosuit a transition fit with the shaft. Inthese instances axial restraint of the hub

should be provided by set screws. Relativesizes and positions are given in thefollowing table.

For sizes above 2090T or where interferencefits are preferred for smaller couplingsizes, bore tolerances should provide aninterference fit between shaft and hub of0.0002 to 0.0007mm per mm of diameter,consistent with AGMA standards.

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2000H

Horizontally Split Cover

General purpose

Easy access to grid minimizes downtime

Ideal for limited space applications

Stop lug in cover prevents spinning during reversing service

2000V

Vertically Split Cover

General purpose

Ideal for higher running speeds

Set Screw x Length Position from(Cone Point) Hub Faces

2202 = 1.22203 = 1.3

2204 = 1.52205 = 1.72206 = 2.0

2207 = 2.12208 = 2.5

2209 = 2.8

S

90

Dr James Bibby originally invented theResilient Coupling in 1917 and the 2000series is the latest version of this wellaccepted product. This Bibby Transmissionsproduct has become universally acceptedwhere reliable protection against shaftmisalignment and vibration is desirable.

Since those early days refinements indesign and material specifications havekept pace with advancing technology,achieving significant improvements inpower/weight ratios.

5Bibby Transmissions Taper Grid Resilient Couplings

Principle

Accommodating Shaft Misalignmentand End-Float

The Series 2000 will accommodatecombinations of misalignments present atset-up or occurring during machinedisplacement, settlement etc.

Effectiveness of Torsional Damping

As the Series 2000 coupling transmitstorque, the flexing of the tapered gridspring de-tunes vibrations and cushionsshock loads.

This unique characteristic is due to thetorsional flexibility of the coupling beingproportionate to the unsupported lengthof each flexible grid rung. Since thisvaries with every variation of torque, a

powerful de-tuning action is producedwhich continuously alters the naturalfrequency of the system and prevents abuild-up of resonance in the system. Theresultant reduction in peak loadingprotects and extends the life of thetransmission equipment.

Versatile Design

Both 2000H and 2000V couplings featureidentical hubs and grid springs, thedifferent cover styles endowing the unitswith great versatility - one is horizontallysplit, the other is vertically split.

All coupling components are designed tobe interchangeable with other populartaper grid couplings available in NorthAmerica.

The stock coupling can be used verticallyor horizontally without modification.

Easy Installation and Maintenance

The grid springs are easily installed byhand or with a soft mallet. The coverfasteners can be tightened with standardwrenches. Every Bibby TransmissionsSeries 2000 coupling is delivered withdetailed installation instructions.

Periodic lubrication of the coupling isrequired and each cover half is suppliedwith standard plugs which can be easilyremoved for re-lubrication. Extendedlubrication periods and enhancedcoupling life can be achieved by usinghigh performance lubricants referred toin the maintenance instructions.

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50

40

30

1620

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Transmission shockwith Bibby coupling

Transmission shockwithout Bibby coupling

Shock load

Parallel

Limited End-Float kitsare available onrequest.

Angular End-Float

Normal loadLight load

Positive protection against the damagingeffects of shock loads, impact loads andvibration.

The Series 2000 is torsionally flexible. The circumferential flexibility is progressivedue to the curved profile of the grooves -state-of-the-art in resilient couplingdesign.

Selection Examples

1. Nominal Torque (simple selection method)

A 4 cyl. diesel engine driven generator setof 280 kW runs at 1000 rpm. Output andinput shafts are identical being 90mm diax 130mm long. A Bibby type TH,horizontally split, coupling is specified forease of assembly.

- The service factor from page 2 must beincludedTable 1 = 1.0: Additional factor (engine)from Table 1A = 1.0: Total = 2.0

- From Table 1A (SF = 2): equivalent: kW = 560

- From Table on page 6, coupling totransmit 560 kW @ 1000 rpm = 2100

- From Table on page 6, allowable speedfor 2100T = 2440 rpm Max bore andoverall dimensions are satisfactory.

2. Nominal Torque (formula method)

An electric motor of 300 kW is to becoupled to drive a rotary screwcompressor at 1000 rpm. Motor shaft is85mm dia x 110mm long. Compressorshaft 75mm x 100mm long. A Bibby typeTV, vertically split, coupling is required.

- From Table 1 service factor = 1.0.Calculate torque:-Nm = Transmitted kW x SF x (9550/rpm) = 300 x 1 x (9550/1000) 2867 Nm.

- From the table on page 7, coupling2090 has rating in excess of required torque. Max rpm = 4000; Max bore 95mm; bore length 98.4mmmake the 2090 selection satisfactory.

3. Peak Torque (formula method)*

An extruder drive running at 300 rpm hasa known peak torque of 11000 Nm. Theconnected shafts are each 120mm dia x160mm long. Select a Bibby type TH,horizontally split, coupling to suit theknown peak unidirectional torque of 11000Nm. From the table on page 6, coupling2120 has torque exceeding calculatedpeak torque. Coupling max rpm is 2025.Max bore 137mm is greater than shaftdiameter. Overall length is satisfactory.

*1. The system peak torque is themaximum load created by the drivingor driven equipment.

2. Occasional peak torques of twice thecatalogue rating can be accommodatedproviding they occur less than 1000times during the life of the coupling.


Series 2000H - Horizontally Split Cover Couplings

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Dimensions in inchesSize Coupling Max Min Bore Max Bore Cplg Wt. WR2/

Rating (In-Lbs) Speed (In) (In) (Lbs) (Lb/ft2) A B C D J Gap

2020 425 4500 0.51 1.06 4.0 4.8 4.02 3.86 1.87 1.56 2.64 0.13

2030 1,204 4500 0.51 1.38 5.3 7.5 4.37 3.86 1.87 1.94 2.68 0.13

2040 2,000 4500 0.51 1.73 7.1 11.3 4.65 4.13 2.00 2.25 2.76 0.13

2050 3,496 4500 0.51 2.01 11.5 23.9 5.43 4.88 2.37 2.63 3.11 0.13

2060 5,496 4350 0.75 2.24 15.7 41.0 5.94 5.12 2.50 3.00 3.62 0.13

2070 8,001 4125 0.75 2.68 22.3 61.5 6.38 6.14 3.00 3.44 3.74 0.13

2080 16,498 3600 0.98 3.27 39.0 153.8 7.64 7.13 3.50 4.13 4.57 0.13

2090 30,004 3600 0.98 3.74 54.0 268.9 8.39 7.87 3.87 4.87 4.80 0.13

2100 50,502 2440 1.65 4.25 91.0 615.1 9.88 9.69 4.75 5.59 6.14 0.19

2110 75,001 2250 1.65 4.61 118.2 922.6 10.63 10.20 5.00 6.31 6.42 0.19

2120 109,996 2025 2.36 5.39 173.5 1742.7 12.13 12.01 5.87 7.06 7.56 0.25

2130 160,003 1800 2.60 6.50 260.1 3382.9 13.66 12.99 6.37 8.56 7.68 0.25

2140 230,003 1650 2.60 7.24 388.0 6321.6 15.12 14.76 7.25 10.00 7.91 0.25

2150 327,476 1500 4.25 8.46 502.6 11925.7 17.83 14.65 7.20 10.63 10.71 0.25

2160 451,386 1350 4.72 9.45 683.4 19887.5 19.76 15.83 7.80 12.01 10.94 0.25

2170 600,077 1225 5.31 11.02 987.7 35606.2 22.32 17.24 8.50 14.02 12.09 0.25

2180 831,966 1100 5.91 11.81 1364.6 62532.9 24.80 19.06 9.41 15.51 12.64 0.25

2190 1,097,487 1050 5.91 13.19 1710.8 89323.0 26.61 20.63 10.24 17.20 12.80 0.25

2200 1,495,768 900 7.01 14.17 2330.3 148609.7 29.80 22.24 11.02 19.61 14.02 0.25

Coupling weight and WR2 with no bore

Max bores stated above use rectangularparallel keyways to BS 4235 pt 1 1972 orDIN 6885 sht 1 1969

Other couplings available are spacer andhalf spacer models. Also couplings with discor drum brakes can be supplied.

C

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Dimensions in inchesCplg. Coupling Max Min Max Cplg Wt WR2

Size Rating (In-Lbs) rpm Bore (In) Bore (In) Lbs (Lb/ft2) A B C D F H J M GAP

2020 460 6000 0.51 1.06 3.5 3.8 4.37 3.86 1.87 1.56 2.48 0.37 0.96 1.89 0.13

2030 1,319 6000 0.51 1.38 4.9 6.2 4.76 3.86 1.87 1.94 2.83 0.37 0.99 1.89 0.13

2040 2,204 6000 0.51 1.73 6.6 9.2 5.08 4.13 2.00 2.25 3.15 0.37 1.02 2.01 0.13

2050 3,850 6000 0.51 2.01 11.0 21.5 5.83 4.88 2.37 2.63 3.82 0.51 1.24 2.40 0.13

2060 6,054 6000 0.75 2.24 14.8 34.2 6.38 5.12 2.50 3.00 4.33 0.51 1.27 2.52 0.13

2070 8,798 5500 0.75 2.68 21.4 54.7 6.81 6.14 3.00 3.44 4.76 0.51 1.33 2.64 0.13

2080 18,144 4750 0.98 3.27 36.6 133.3 7.87 7.13 3.50 4.13 5.87 0.51 1.74 3.50 0.13

2090 33,013 4000 0.98 3.74 52.0 246.0 9.13 7.87 3.87 4.87 6.61 0.51 1.86 3.78 0.13

2100 55,582 3250 1.65 4.25 87.1 587.7 10.51 9.69 4.75 5.59 7.80 0.63 2.37 4.76 0.19

2110 82,489 3000 1.65 4.61 114.4 891.9 11.26 10.20 5.00 6.31 8.50 0.63 2.49 4.88 0.19

2120 121,255 2700 2.36 5.39 167.1 1708.6 12.56 12.01 5.87 7.06 9.69 0.63 2.91 5.63 0.25

2130 176,129 2400 2.60 6.50 253.5 3690.5 14.88 12.99 6.37 8.56 11.18 0.87 2.97 5.79 0.25

2140 253,130 2200 2.60 7.24 381.4 6475.4 16.38 14.76 7.25 10.00 12.68 0.87 3.09 6.14 0.25

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Coupling weight and WR2 with no bore.

Max. bores stated above use rectangularparallel keyways to BS 4235 Pt. 11972 orDIN 6885 sht. 11968.

H

C

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GAP

B

DA

C

F

J

H

M M


Series 2000V - Vertically Split Cover Couplings

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Series 2000H - Brakewheel Assembly

Size Standard Brakewheel

Motor Power Brake Torque(40% ED KW) (Nm)

2040 2.2 49

2050 5.5 98

2060 5.5 7.5 11 98 137 208

2070 15 295

2080 30 520

2090 75 90 618 785

2100 45 1295

2110 75 90 1766

2120 110 132 3288

2130 160 200 3925 4661

2140 160 200 3925 4661

Size Brakewheel Coupling Bore Diameter Dimensions in inchesSize (In) Rating (In) B

AB JB (In-Lbs) Max Min A min C D E F H I J Gap

2040 6.3 3.15 1416.1 1.73 0.50 4.65 4.61 2.00 2.25 5.71 5.51 1.57 0.47 1.10 0.13

2050 7.9 3.94 1770.1 1.97 0.50 5.43 5.55 2.37 2.63 7.24 7.01 1.97 0.67 1.30 0.13

2060 7.9 3.94 1770.1 2.24 0.75 5.94 5.79 2.50 3.00 7.24 7.01 1.97 0.67 1.30 0.13

2070 9.8 4.92 2212.7 2.68 0.75 6.38 7.01 3.00 3.44 9.06 8.82 2.46 0.87 1.59 0.13

2080 12.4 6.30 2788.0 3.23 1.06 7.64 8.03 3.50 4.13 11.50 11.22 3.15 0.91 2.24 0.13

2090 14.0 7.09 3142.0 3.74 1.06 8.39 8.90 3.87 4.87 12.99 12.60 3.54 1.02 2.52 0.13

2100 15.7 7.87 3540.3 4.21 1.63 9.88 10.79 4.75 5.59 14.72 14.25 3.94 1.10 2.83 0.19

2110 17.7 8.82 3982.8 4.61 1.63 10.63 11.46 5.00 6.31 16.61 16.14 4.41 1.26 3.15 0.19

2120 19.7 9.84 4425.4 5.35 2.37 12.13 13.39 5.87 7.06 18.19 17.52 4.92 1.38 3.54 0.25

2130 22.0 11.02 4956.4 6.50 2.63 13.66 14.76 6.37 8.56 20.31 19.49 5.51 1.77 3.74 0.25

2140 22.0 11.02 4956.4 7.24 2.63 15.12 16.54 7.25 10.00 20.31 19.49 5.51 1.77 3.74 0.25

Maximum operating speeds are dependantupon the material specification forbrakewheel.

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SHAFT HUB

DDA

GRIDGAP

U

BETWEEN SHAFT ENDS

F

BE

LUBE PLUGS

SPACER HUB

HUB

COVER

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SHAFT HUB

FLANGEFASTENER

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Series 2000 - Resilient Grid CouplingFull Spacer Assembly

Size Coupling Max Coupling Dimensions in inches Flange FastenersRating Bore Wt with

No Bore BE Diameter(In-Lbs) (In) (Lbs) A B Min Max DD E F S U Gap Quantity Inches

2020 460 1.38 8.5 4.02 1.37 3.50 0.80 2.06 0.03 3.37 1.08 0.1 0.20 4 0.250

2030 1,319 1.69 11.6 4.37 1.63 3.50 8.50 2.34 0.03 3.69 1.24 0.1 0.20 8 0.250

2040 2,204 2.20 18.6 4.65 2.13 3.50 8.50 3.09 0.03 4.44 1.08 0.1 0.20 8 0.250

2050 3,850 2.64 27.6 5.43 2.37 4.37 8.50 3.44 0.03 4.94 1.60 0.1 0.20 8 0.312

2060 6,054 3.15 43.2 5.94 2.87 5.00 12.99 4.06 0.07 5.69 1.70 0.1 0.20 8 0.375

2070 8,798 3.35 54.2 6.38 3.13 5.00 12.99 4.31 0.07 6.00 1.84 0.1 0.20 12 0.375

2080 18,144 3.74 86.9 7.64 3.50 7.01 15.98 4.81 0.07 7.00 1.96 0.1 0.20 12 0.500

2090 33,013 4.33 132.9 8.39 4.00 7.09 15.98 5.63 0.07 8.25 2.24 0.1 0.20 12 0.625

2100 55,582 5.12 218.0 9.88 3.56 7.99 15.98 6.75 0.06 9.87 ------ 0.1 0.24 12 0.750

2110 82,489 5.91 302.0 10.63 4.10 8.27 15.98 7.75 0.06 10.87 ------ 0.1 0.24 12 0.750

2120 121,255 6.69 432.1 12.13 4.70 9.69 15.98 8.87 0.06 12.56 ------ 0.2 0.39 12 0.875

2130 176,129 7.48 571.0 13.66 5.30 10.12 15.98 9.37 0.06 13.63 ------ 0.2 0.39 12 1.000

2140 253,130 8.27 749.6 15.12 6.00 10.51 15.98 10.50 0.06 14.13 ------ 0.2 0.39 12 1.125

Standard Spacer Lengths (BE = Distance Between Shaft Ends)

BE Pump Coupling Size

mm Inch Std 2020T 2030T 2040T 2050T 2060T 2070T 2080T 2090T 2100T 2110T

89 3.50 ANSI

100 3.94 ISO

111 4.38 ANSI

127 5.00 ANSI

140 5.51 ISO

180 7.09 ISO

184 7.25 ANSI

248 9.75 ANSI

250 9.84 ISO

311 12.25 ANSI

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RIGID T HUB

DDA

FLANGEFASTENER

GAP

D

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BETWEEN SHAFT ENDS

F

BE

LUBE PLUGS

T HUB

SPACER HUB

COVER

GRID

S

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U

B


Series 2000H - Half Spacer Assembly

Size Coupling Max Max Bores Coupling Dimensions in inches Flange FastenersRating Allowable Rigid T Wt with

Speed Hub Hub No Bore BE S Diameter(In-Lbs) (rpm) (In) (In) (Lbs) A B Min Max C D DD E F Rigid T Hub U Quantity Inches

2020 460 3600 1.38 1.10 6.4 3.82 1.37 1.77 4.02 1.87 1.56 2.06 0.03 3.37 1.08 1.54 0.07 4 0.250

2030 1,319 3600 1.69 1.38 8.6 4.16 1.63 1.77 4.29 1.87 1.94 2.34 0.03 3.69 1.24 1.54 0.07 8 0.250

2040 2,204 3600 2.20 1.69 13.0 4.50 2.13 1.77 4.29 2.00 2.25 3.09 0.03 4.44 1.08 1.58 0.07 8 0.250

2050 3,850 3600 2.64 1.97 19.8 5.32 2.37 2.20 4.29 2.37 2.63 3.44 0.03 4.94 1.60 1.76 0.07 8 0.312

2060 6,054 3600 3.15 2.20 29.8 5.82 2.87 2.52 6.54 2.50 3.00 4.06 0.07 5.69 1.70 2.06 0.11 8 0.375

2070 8,798 3600 3.35 2.64 38.6 6.25 3.13 2.52 6.54 3.00 3.44 4.31 0.07 6.00 1.84 2.12 0.11 12 0.375

2080 18,144 3600 3.74 3.15 63.1 7.50 3.50 3.07 8.03 3.50 4.13 4.81 0.07 7.00 1.96 2.54 0.11 12 0.500

2090 33,013 3600 4.33 3.74 94.6 8.31 4.00 3.27 8.03 3.87 4.87 5.63 0.07 8.25 2.24 2.82 0.11 12 0.625

2100 55,582 2440 5.12 4.33 156.1 9.88 3.56 4.06 8.07 4.75 5.59 6.75 0.06 9.87 ------ ------ 0.12 12 0.750

2110 82,489 2250 5.91 4.72 211.0 10.62 4.10 4.17 8.07 5.00 6.31 7.75 0.06 10.87 ------ ------ 0.12 12 0.750

2120 121,255 2025 6.69 5.51 306.4 12.12 4.70 4.92 8.07 5.87 7.06 8.87 0.06 12.56 ------ ------ 0.16 12 0.875

2130 176,129 1800 7.48 6.69 418.9 13.62 5.30 5.12 8.07 6.37 8.56 9.37 0.06 13.63 ------ ------ 0.16 12 1.000

2140 253,130 1650 8.27 7.87 571.0 15.12 6.00 5.31 8.07 7.25 10.00 10.50 0.06 14.13 ------ ------ 0.16 12 1.125

Standard Spacer Lengths (BE = Distance Between Shaft Ends)

BE Pump Coupling Size

mm Inch Std 2020 2030 2040 2050 2060 2070 2080 2090 2100 2110

89 3.50 ANSI

127 5.00 ANSI

140 5.51 ISO

180 7.09 ISO

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Series II Gear Couplings

The standard range of Bibbygear Series IIcouplings includes single and doubleengagement types, continuous sleeve,telescopic and rigid designs. Couplingssuitable for vertical, as well as horizontaloperation may be selected from this section.

Bibby Transmissions Gear Couplings havebeen proved over many years of useinternationally, in all kinds of industrialenvironments. This reliability has beenachieved by our attention to detail indesign, applications expertise and stringentquality control.

The latest development of BibbyTransmissions Gear Couplings family, theBibbygear Series II, offers improvements,refinements and extensions to the range,further consolidating the Status of BibbyTransmissions at the forefront of GearCoupling design and manufacture.

Torque Control can be incorporated intoall Bibbygear Series II couplings. Aparticularly efficient method is tocombine the gear couplings with SETorque Limiting Modules, which provideimmediate disconnection of the drivewhen the torque in the drive systemexceeds these SE Torque Limiting SafetyModules pre-set values. Re-setting isquick and simple.

Shear pins can also be incorporated withgear coupling assemblies to provideoverload protection.

Brake Drum and Brake Disc designs canbe supplied if required.

Other special couplings include assemblieswhich will accommodate HighMisalignment; Bibby Transmissions alsosupply Disengaging types and Insulatedgear couplings.

To ensure the gear couplings meet yourmost exacting requirements, pleasediscuss the specification and design withBibby Transmissions.

Spares and Replacements

Bibby Transmissions hold file records of allBibbygear Series II couplings as part ofour Customer Quality Assurance Program.When ordering spare and replacementparts please quote the Serial Numberstamped on the coupling, together withany other relevant information.

Bibby Transmissions Gear Couplings

Series II Gear CouplingsComplete Range of Specialised Gear Coupling Designs

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Shear pin gear coupling Disc brake gear coupling Disengaging types

Limited end float gear coupling Brake drum gear coupling High misalignment gear coupling

Mill spindle design gear couplingGear coupling combined with SE Torque Limiting Modules

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Increased bore capacities

A major benefit of the Bibbygear Series IIGear Coupling is the considerableincrease in maximum bore capacities thatcan now be offered. It should be noted,however, that the maximum boresspecified throughout this publication arebased on keyways to BS 4235. Shouldalternative keyways or Imperial Standardsbe required, allowance needs to be madeto ensure that the strength of thecoupling hub is not compromised.

High torque capacity/weight ratio

By optimizing the pitch circle diameter ofthe gear teeth and incorporatingcarefully chosen material specifications,Bibby Transmissions Gear Couplings offera high torque capacity to weight ratioresulting in lower loads on driving anddriven shafts.

Crowned hub teeth

Advanced CAD analysis, combined withmany years of applications experience,has enabled our designers to furtherrefine the tooth form of BibbyTransmissions Gear Couplings in order toensure maximum contact at the strongestpart of the tooth. Hub teeth areengineered with tooth form crowned onthree surfaces: tip, flank and root. A highdegree of shaft misalignment can beaccommodated.

Some coupling sizes also feature longsleeve teeth as standard. This allowsgreater axial movement with standardcomponents.

Extended range

Bibby Transmissions can supply gearcouplings in various forms. Most standardcouplings are fully detailed in thefollowing pages. However, certainmodifications are available which are notdetailed. These include limited end float,insulated, integrated shear pins, torquecontrol, brake drums and brake discs.

The long established reputation of BibbyTransmissions Gear Couplings nowextends to include continuous sleeve,telescopic and rigid designs, and borecapacities up to 20 inches.

Ease of assembly

Bibbygear Series II Gear Couplingsincorporate exposed bolts and captivenuts for ease of assembly. Careful designhas resulted in a space efficient boltinstallation which enables the couplingsto offer increased bore capacities whilstensuring sufficient hub/bore ratio to cateradequately to the transmitted torque. Inthis manner the most compact couplinginstallation for the required power ratingis achieved.

Fully interchangeable

The Series II Gear Couplings observe theAGMA standard flange dimensions. Thisresults in a half-for-halfinterchangeability with other northAmerican manufacturers.

Longer hubs

The advanced design of these BibbygearSeries II Couplings permits theincorporation of longer hubs, for thoseinstances where greater shaft/hub contactis required or where mill motors are thedriving medium.

Standard and special materials

The high specification gear couplings inthe Bibbygear Series II range aremanufactured from high quality carbonsteels as standard.

To suit specific applications BibbyTransmissions can supply gear couplings ina variety of specialised materials.

Bibbygear Series II Couplings are able towithstand a wide temperature range.

The maximum operating limit is125C /257F due to the specific seals andlubricant used in the standard coupling,However, by selective changes to materialthis can be increased.

Minimum temperatures are limited by theapplication and the degree of shockloading that may occur.

Full details of the anticipated workingtemperature range should be supplied toenable Bibby Transmissions engineers toadvise.

Versatility

The standard range of gear couplingsincludes a number which are suitable formounting vertically as well ashorizontally.

To vary the shaft end gap and controllimited end float, one or both hubs canbe reversed. To facilitate this feature thehub diameters on either side of the teethare identical.

Bibbygear Series II couplings can becombined with Bibbigard Torque LimitingModules. These self-contained assembliesare fitted between two halves of astandard coupling. Full details will besupplied on request.

Special manufacture

Bibby Transmissions are able to supplycomponents such as hubs and sleeves, andcomplete Gear Coupling assemblies,specially manufactured to suit specificapplications.

There are circumstances in which thisprovides a more cost-effective method ofsolving specific application requirements.Please consult a member of our Sales staffto discuss your individual application.

Most standard couplings can also bestock-altered to customers requirements

This includes parallel or taper boring andkeywaying, puller holes, shortened hubsetc. These changes are available withminimal increases in costs or lead times.

Parallel offset Angular

Angular andparallel offset

End float

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Application

Couplings with standard hub lengthsrequire fitting with keys through the fullhub length, and an interference fit onshaft is necessary particularly when thecoupling is transmitting the maximumrated power. Unless otherwise specified,these hubs would be bored to give aninterference of between 0.0002 and0.0007mm per millimetre of borediameter, consistent with AGMAstandards.

Couplings with extended hub lengths aregenerally intended for use wheretransition fits on shafts are preferred, andunless otherwise specified, such couplingswould be bored to H7 tolerances. In theseinstances axial restraint of the hub shouldbe provided by set screws.

Couplings transmitting the maximumrated capacity, particularly whererelatively small shafts are being used,often require 2 keys. This is more relevantwith larger sizes of couplings and, if indoubt, full details should be supplied toallow Bibby Transmissions engineers toadvise.

For all couplings, maximum bores are foruniformly loaded drives only, usingrectangular parallel keys toBS 4235 Part 1: 1972, or DIN 6885, sheet 1, 1968. Taper and Square keysshould not be used with a hub to boreratio of less than 1.5 : 1.

Misalignment

Bibbygear Series II Double EngagementGear Couplings are designed toaccommodate parallel and angularmisalignment and axial movement asillustrated above.

Single engagement couplingsaccommodate only angular misalignmentand axial movement.

Limited End Float couplings can also beprovided.

While some sizes of Bibbygear Series IIGear Couplings are capable of staticmisalignment of up to 11/2 per gear meshit is recommended that all couplings bealigned, on initial installation, to thelimits contained in the Installation andMaintenance leaflet supplied with eachcoupling.

Care should be taken to ensure thatmisalignment during operation is kept toan absolute minimum, as excesses willcause wear of the product together withhigh loading on associated machinery.This will have a great influence on the lifeof the product.

Selection Examples

Example 1. Select a double engagement coupling toconnect a 4-cylinder reciprocatingcompressor to a 250kw, 1000rpm motor.Motor shaft 70mm diameter, compressorshaft 65mm diameter.

1. Type FD

2. Obtain service factor from Table 1 &1A, page 2: Service factor 2.00 (1.00 pIus 1.00)

3. Rating = 250kw x 2.00 = 50kw1000rpm 100rpm

4. Coupling size is 20 : (capacity 52.1kw/rpm).Application is non-reversing withcyclic torque, i.e. (table 2, page 3)Medium duty, requiring a minimumHub Boss/Bore of 1.45 : 1.Boss of Size 20 coupling is 105mm

... Max. bore = D = 105 = 72mm1.45 1.45

... Coupling size 20 will accommodate70mm diameter shaft.

5. Coupling size FD 20 is suitable forduty, capable of accepting 70mmbore and suitable for operating at1000rpm.

Example 2. Select a double engagement couplingfor a heavy duty pulveriser with anormal demand of 350kw from a motorrunning at 750rpm. Shafts are 90mmand 100mm diameters.

1. Type FD

2. Obtain service factor from Table 1 &1A, page 2: Service factor 1.75

3. Rating = 350kw x 1.75 = 81kw750rpm 100rpm

4. Coupling size is 25: (capacity 90.7kw/100rpm).

Application is heavy duty, requiring aminimum Hub Boss/Bore of 1.5 : 1.

Boss of Size 25 coupling is 131 mm

... Max.bore = D = 131 = 87mm1.5 1.5

As the shaft sizes are 90mm and100mm then the coupling size willneed to be increased toaccommodate the 100mm shaft.

Boss of Size 30 coupling is 152mm ... Max. bore = 152 = 101mm

1.5

5. Coupling size FD 30 is suitable for theduty and of accepting shafts of 90mmand 100mm.

6. Check speed capability.

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Minimum dimensionfor aligning andseal removal

M


The standard FD range of gear couplingswill accommodate parallel offset, angularmisalignment and axial movement, or acombination of all three.

Type FD AGMA Sizes 10 - 70Double engagement couplings for horizontal shaft

The maximum speeds specified above aregenerally based on the limit of thelubricant being used. To attain thesespeeds a separate balance operation maybe necessary depending on therequirements of the application. Specialcouplings can be supplied for higherspeeds or more sensitive applications.

Maximum bores specified are foruniformly loaded drives only. See table 2on page 3 for factors to apply when otherthan uniform loads are applied.

All dimensions are subject toconfirmation. General arrangementdrawings are available which showcertified dimensions.

Puller holes can be supplied.

Hubs are available with longer bosslengths.

Mass and Inertia are based on solid hubs.All Inertia figures are WR2.

Coupling Max Bore Dia (In) Dimensions in inches Rating Speed Coupling WR2

rpm Weight InertiaSize HP/100rpm In-Lbs Max Min A B C D F H J M GAP Lbs Lb-In2

10 17 10,621 8000 2.05 0.6 4.57 3.50 1.69 2.72 3.31 0.55 1.54 2.01 0.12 9.6 17.8

15 35 22,127 6500 2.56 0.9 5.98 4.02 1.97 3.39 4.13 0.75 1.89 2.40 0.12 19.8 65.6

20 70 44,254 5600 3.15 1.1 7.01 5.00 2.44 4.13 5.00 0.75 2.36 2.99 0.12 32.6 140.1

25 122 77,001 5000 3.86 1.4 8.39 6.26 3.03 5.16 6.10 0.87 2.83 3.62 0.20 58.2 358.8

30 180 114,174 4400 4.53 1.7 9.45 7.36 3.58 5.98 7.13 0.87 3.31 4.17 0.20 87.3 666.3

35 271 171,704 3900 5.31 2.0 10.98 8.62 4.21 7.01 8.31 1.14 3.86 5.12 0.24 143.3 1551.4

40 426 269,946 3600 6.30 2.0 12.52 9.72 4.76 8.27 9.69 1.14 4.37 5.71 0.24 211.6 2938.7

45 584 369,959 3200 7.09 2.2 13.62 10.94 5.31 9.25 10.79 1.14 4.84 6.50 0.31 288.8 4749.8

50 797 504,490 2900 7.68 3.0 15.31 12.36 6.02 10.00 12.05 1.50 5.55 7.20 0.31 410.1 8645.3

55 1132 716,907 2650 8.46 3.0 16.73 13.54 6.61 10.98 13.15 1.50 6.22 7.99 0.31 544.5 13087.6

60 1328 840,817 2450 9.25 3.1 17.99 15.12 7.40 12.01 14.41 1.02 6.65 8.98 0.31 659.2 17803.2

70 2053 1,301,053 2150 11.02 3.9 20.75 17.76 8.70 14.02 16.73 1.14 7.72 10.47 0.39 1042.8 37588.3

Seal + Fastener Size Gasket Kit (FD) Kit

10 SKD10 FFK10

15 SKD15 FFK15

20 SKD20 FFK20

25 SKD25 FFK25

30 SKD30 FFK30

35 SKD35 FFK35

40 SKD40 FFK40

45 SKD45 FFK45

50 SKD50 FFK50

55 SKD55 FFK55

60 SKD60 FFK60

70 SKD70 FFK70

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The GFDW range of larger size couplings,similar to those on page 15, willaccommodate parallel offset, angularmisalignment and axial movement or acombination of all three.

Type GFDW Sizes 80 - 120Double engagement couplings for horizontal shafts







Coupling Max Bore Dia (In) Dimensions in inches Rating Speed Coupling WR2

rpm Weight InertiaSize HP/rpm In-Lbs Max Min A B C D F H J M GAP Lbs Lb-In2

80 3084 1,947,154 1750 10.83 3.5 23.23 20.00 9.80 15.16 19.09 1.26 9.57 11.81 0.39 1503.5 70802.7

90 3889 2,009,109 1550 11.81 ------ 25.98 22.24 10.87 16.54 21.06 1.50 10.43 12.80 0.51 1979.7 119428.3

100 5498 3,469,474 1450 12.99 ------ 27.99 24.53 12.01 18.50 23.43 1.77 11.57 13.98 0.51 2738.1 191187.9

110 7107 4,478,454 1330 14.17 ------ 30.51 26.81 13.15 20.08 25.20 2.01 12.68 15.16 0.51 3545.0 294350.7

120 9655 6,089,282 1200 16.14 ------ 32.99 28.23 13.86 22.64 28.15 2.13 13.43 15.75 0.51 4567.9 456971.5

Larger sizes are available on request.

Seal + Fastener Size Gasket Kit (FD) Kit

80 SKD80 FFK80

90 SKD90 FFK90

100 SKD100 FFK100

110 SKD110 FFK110

120 SKD120 FFK120

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Consisting of one half flexible and one halfrigid, this coupling will accommodateangular misalignment and axial movementand is usually used in pairs where anyparallel offset is required.

Type FS Sizes 10 - 70Single engagement couplings for horizontal and vertical shafts







Coupling Max Max Bore Min Dimensions in inches Rating Speed (In) Bore Coupling WR2

rpm (In) Weight InertiaSize HP/rpm In-Lbs Flex Hub Rigid Hub A B C D F FI H J L M GAP (Lbs) Lb-In2

10 16.8 10,621 8000 2.05 2.36 0.63 4.57 3.43 1.69 2.72 3.31 3.31 0.55 1.54 1.57 2.01 0.16 9.9 18.8

15 35.0 22,127 6500 2.56 3.15 0.94 5.98 3.94 1.97 3.39 4.13 4.21 0.75 1.89 1.85 2.40 0.16 20.3 69.7

20 69.9 44,254 5600 3.15 3.54 1.10 7.01 4.92 2.44 4.13 5.00 5.12 0.75 2.36 2.32 2.99 0.16 33.6 149.0

25 121.6 77,001 5000 3.86 4.33 1.38 8.39 6.14 3.03 5.16 6.10 6.18 0.87 2.83 2.91 3.62 0.20 60.0 379.3

30 180.2 114,174 4400 4.53 5.12 1.65 9.45 7.24 3.58 5.98 7.13 7.17 0.87 3.31 3.46 4.17 0.20 90.8 717.6

35 271.2 171,704 3900 5.31 5.91 1.97 10.98 8.46 4.21 7.01 8.31 8.35 1.14 3.86 4.02 5.12 0.24 147.2 1630.0

40 426.3 269,946 3600 6.30 7.09 1.97 12.52 9.61 4.76 8.27 9.69 9.84 1.14 4.37 4.57 5.71 0.31 219.6 3143.8

45 584.1 369,959 3200 7.09 7.87 2.17 13.62 10.79 5.31 9.25 10.79 10.87 1.14 4.84 5.16 6.50 0.31 296.3 5016.3

50 796.6 504,490 2900 7.68 8.66 2.95 15.31 12.20 6.02 10.00 12.05 12.17 1.50 5.55 5.83 7.20 0.35 429.6 9328.7

55 1131.9 716,907 2650 8.46 9.45 2.95 16.73 13.78 6.61 10.98 13.15 13.15 1.50 6.22 6.81 7.99 0.35 574.6 14351.9

60 1327.6 840,817 2450 9.25 10.24 3.15 17.99 15.16 7.40 12.01 14.41 14.41 1.02 6.65 7.36 8.98 0.41 696.7 19477.6

70 2053.1 1,301,053 2150 11.02 11.81 3.94 20.75 17.87 8.70 14.02 16.73 16.73 1.14 7.72 8.66 10.47 0.51 1102.1 41176.3

Seal + Fastener Size Gasket Kit (FS) Kit

10 SKS10 FFK10

15 SKS15 FFK15

20 SKS20 FFK20

25 SKS25 FFK25

30 SKS30 FFK30

35 SKS35 FFK35

40 SKS40 FFK40

45 SKS45 FFK45

50 SKS50 FFK50

55 SKS55 FFK55

60 SKS60 FFK60

70 SKS70 FFK70

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This type consist of one standard flexiblehalf coupling and one rigid half coupling. It accommodates angular misalignment andaxial movement and is usually used in pairswhere parallel offset is required.

Type GFSW Sizes 80 - 120Single engagement couplings for horizontal and vertical shafts







Coupling Max Max Bore Min Dimensions in inches Rating Speed (In) Bore Coupling WR2

rpm (In) Weight InertiaSize HP/100rpm In-Lbs Flex Hub Rigid Hub A B C D F H J M GAP Lbs Lb-In2

80 3084 1,947,154 1750 10.83 13.189 3.5 23.23 20.12 9.80 15.16 19.09 1.26 9.57 11.81 0.39 1576.3 74390.7

90 3889 2,009,109 1550 11.81 14.567 ------ 25.98 22.32 10.87 16.54 21.06 1.50 10.43 12.80 0.51 2136.3 125066.6

100 5498 3,469,474 1450 12.99 15.945 ------ 27.99 24.65 12.01 18.50 23.43 1.77 11.57 13.98 0.51 2775.6 192281.3

110 7107 4,478,454 1330 14.17 17.323 ------ 30.51 26.93 13.15 20.08 25.20 2.01 12.68 15.16 0.51 3697.1 307745.8

120 9655 6,089,282 1200 16.14 19.291 ------ 32.99 28.35 13.86 22.64 28.15 2.13 13.43 15.75 0.51 4757.5 477747.5


Seal + Fastener Size Gasket Kit (FS) Kit

80 SKS80 FFK80

90 SKS90 FFK90

100 SKS100 FFK100

110 SKS110 FFK110

120 SKS120 FFK120

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The standard CD range of gear couplingswill accommodate parallel offset, angularmisalignment and axial movement, or acombination of all three.

Type CD Sizes 10 - 40Double engagement couplings with continuous sleeves for horizontal shafts






Mass and Inertia are based on solid hubs.All Inertia figures are MR2.

Coupling Max Bore Dia Dimensions in mm Rating Speed mm MR2

rpm Mass InertiaSize kW/rpm kNm Max Min A B C D G GAP kg kgm2

10 0.125 1.2 8000 52 16 95 89 43 69 70 3 4.30 0.0047

15 0.261 2.5 6500 65 24 115 102 50 86 70 3 6.65 0.0099

20 0.521 5.0 5600 80 28 135 127 62 105 96 3 11.99 0.0250

25 0.907 8.7 5000 98 35 165 159 77 131 114 5 22.18 0.0687

30 1.344 12.9 4400 115 42 190 187 91 152 128 5 34.59 0.141

35 2.022 19.4 3900 135 50 218 219 107 178 140 6 53.15 0.282

40 3.179 30.5 3600 160 50 255 247 121 210 149 6 81.69 0.702

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Type FSC Sizes 10 - 70Single engagement couplings for horizontal and vertical shafts

These assemblies would normally besupplied as shown although couplings canbe reversed if a greater degree of paralleloffset is required. Installation as showngives the best combination of availablemaximum bores and ease of maintenance.

All floating shaft couplings can be modifiedfor vertical operation. This does not affectany external dimensions. If both connectingshafts are located, a thrust plate and button(see page 23) are fitted to the lowercoupling. The weight of the shaft andassociated hubs can be borne by the lowershaft. Extra plates and buttons may beneeded if the upper shaft is not self-supported.

Coupling Max Bore Dia (In) Dimensions in inches Rating Speed

rpm Size HP/rpm In-Lbs Max Min A DBSE min. C D FI H L GAP

10 17 10,621 2.36 0.6 4.57 4.72 1.69 2.72 3.31 0.55 1.57 0.1615 35 22,127 3.15 0.9 5.98 6.30 1.97 3.39 4.21 0.75 1.85 0.1620 70 44,254 3.54 1.1 7.01 7.68 2.44 4.13 5.12 0.75 2.32 0.1625 122 77,001 4.33 1.4 8.39 9.45 3.03 5.16 6.18 0.87 2.91 0.2030 180 114,174 5.12 1.7 9.45 11.22 3.58 5.98 7.17 0.87 3.46 0.2035 271 171,704 5.91 2.0 10.98 12.99 4.21 7.01 8.35 1.14 4.02 0.2440 426 269,946 7.09 2.0 12.52 14.96 4.76 8.27 9.84 1.14 4.57 0.3145 584 369,959 7.87 2.2 13.62 16.73 5.31 9.25 10.87 1.14 5.16 0.3150 797 504,490 8.66 3.0 15.31 18.70 6.02 10.00 12.17 1.50 5.83 0.3555 1132 716,907 9.45 3.0 16.73 20.47 6.61 10.98 13.15 1.50 6.81 0.3560 1328 840,817 10.24 3.1 17.99 22.83 7.40 12.01 14.41 1.02 7.36 0.4170 2053 1,301,053 11.81 3.9 20.75 26.97 8.70 14.02 16.73 1.14 8.66 0.51


The maximum running speed of this typeof assembly is dependent on manyfactors including length of shaft, diameterof shaft and duty conditions. In allinstances it is recommended that fulldetails be given to Bibby Transmissionsengineers for a suitable selection of shaftto be determined.





Mass and Inertias cannot be included dueto variable (unknown) spacer lengths.

DBSE(min) can be reduced by reversing oneor both couplings such that the rigid hub ismounted on the floating shaft, thuseliminating the need for cover withdrawal.

DBSE(max) is dependent on thecharacteristics of the drive. Full detailsshould be supplied to enable our engineersto advise.

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Coupling Max Bore Dia (In) Dimensions in inches Rating Speed

rpm Size HP/100rpm In-Lbs Max Min A DBSE min. C D F H J M GAP10 17 10,621 8000 2.05 0.6 4.57 2.56 1.69 2.72 3.31 0.55 1.54 2.008 0.12

15 35 22,127 6500 2.56 0.9 5.98 2.76 1.97 3.39 4.13 0.75 1.89 2.402 0.12

20 70 44,254 5600 3.15 1.1 7.01 3.54 2.44 4.13 5.00 0.75 2.36 2.992 0.12

25 122 77,001 5000 3.86 1.4 8.39 3.94 3.03 5.16 6.10 0.87 2.83 3.622 0.20

30 180 114,174 4400 4.53 1.7 9.45 3.94 3.58 5.98 7.13 0.87 3.31 4.173 0.20

35 271 171,704 3900 5.31 2.0 10.98 4.13 4.21 7.01 8.31 1.14 3.86 5.118 0.24

40 426 269,946 3600 6.30 2.0 12.52 4.33 4.76 8.27 9.69 1.14 4.37 5.709 0.24

45 584 369,959 3200 7.09 2.2 13.62 4.33 5.31 9.25 10.79 1.14 4.84 6.496 0.31

50 797 504,490 2900 7.68 3.0 15.31 5.51 6.02 10.00 12.05 1.50 5.55 7.205 0.31

55 1132 716,907 2650 8.46 3.0 16.73 5.51 6.61 10.98 13.15 1.50 6.22 7.992 0.31

60 1328 840,817 2450 9.25 3.1 17.99 4.53 7.40 12.01 14.41 1.02 6.65 8.976 0.31

70 2053 1,301,053 2150 11.02 3.9 20.75 5.12 8.70 14.02 16.73 1.14 7.72 10.47 0.39


The maximum running speed of this typeof assembly is dependent on manyfactors including length of shaft, diameterof shaft and duty conditions. In allinstances it is recommended that fulldetails be given to Bibby Transmissionsengineers for a suitable selection of shaftto be determined.





Mass and Inertias cannot be included dueto variable (unknown) spacer lengths.

DBSE(max) is dependent on thecharacteristics of the drive. Full detailsshould be supplied to enable our engineersto advise. Where long DBSE dimensions arerequired consideration should be given tothe cardan shaft type FSC shown on page 20.

DBSE(min) is based on a normal boltarrangement. Should a shorter DBSE berequired reference should be made to BibbyTransmissions engineers to advise.

Blanking Plate

GAP

DBSE

D

H H

F

C

A

C

M

J



A range of couplings where a spacer of therequired length is interposed between twohalves of a standard FD gear coupling.These assemblies allow for the removal ofthe spacer without needing to disturb thehubs on their respective shafts.

Type FDT Sizes 10 - 70Double engagement couplings with tubular spacer for horizontal shafts

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Type FR Sizes 10 - 70A full rigid coupling for horizontal and vertical shafts

The standard designs of FR couplings arefully rigid and allow for no misalignment ofany kind.

To attain the maximum speeds specified aseparate balance operation may benecessary depending on therequirements. Special couplings can besupplied for higher speeds or moresensitive applications.





Coupling Max Bore Dia Dimensions in inches Rating Speed (In) Coupling WR2

rpm Weight InertiaSize HP/100rpm In-Lbs Max Min A B FI H L GAP (Lbs) Lb-In2

10 16.8 10,621 8000 2.36 0.63 4.57 3.31 3.31 0.55 1.57 0.20 10.1 21

15 35.0 22,127 6500 3.15 0.94 5.98 3.86 4.21 0.75 1.85 0.20 20.8 75

20 69.9 44,254 5600 3.54 1.10 7.01 4.80 5.12 0.75 2.32 0.20 34.6 161

25 121.6 77,001 5000 4.33 1.38 8.39 5.98 6.18 0.87 2.91 0.20 61.7 403

30 180.2 114,174 4400 5.12 1.65 9.45 7.13 7.17 0.87 3.46 0.20 93.6 765

35 271.2 171,704 3900 5.91 1.97 10.98 8.23 8.35 1.14 4.02 0.20 151.0 1709

40 426.3 269,946 3600 7.09 1.97 12.52 9.41 9.84 1.14 4.57 0.31 227.4 3349

45 584.1 369,959 3200 7.87 2.17 13.62 10.59 10.87 1.14 5.16 0.31 304.8 5297

50 796.6 504,490 2900 8.66 2.95 15.31 12.01 12.17 1.50 5.83 0.39 448.5 10012

55 1131.9 716,907 2650 9.45 2.95 16.73 14.02 13.15 1.50 6.81 0.39 605.1 15650

60 1327.6 840,817 2450 10.24 3.15 17.99 15.20 14.41 1.02 7.36 0.51 733.2 21186

70 2053.1 1,301,053 2150 11.81 3.94 20.75 17.99 16.73 1.14 8.66 0.67 1160.7 44764

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The standard FD range of gear couplingswill accommodate parallel offset, angularmisalignment and axial movement, or acombination of all three.

Type FDV Sizes 10 - 70Double engagement couplings for vertical shafts







Coupling Max Bore Dia Dimensions in inches Rating Speed (In) Coupling WR2

rpm Weight InertiaSize HP/100rpm In-Lbs Max Min A B C D F H J M DBSE (Lbs) Lb-In2

10 17 10,621 8000 2.05 0.6 4.57 3.50 1.54 2.72 3.31 0.55 1.54 2.01 0.9449 9.35 17.09

15 35 22,127 6500 2.56 0.9 5.98 4.02 1.77 3.39 4.13 0.75 1.89 2.40 0.9449 19.07 64.93

20 70 44,254 5600 3.15 1.1 7.01 5.00 2.26 4.13 5.00 0.75 2.36 2.99 0.9449 31.28 136.68

25 122 77,001 5000 3.86 1.4 8.39 6.26 2.81 5.16 6.10 0.87 2.83 3.62 1.1024 55.20 351.96

30 180 114,174 4400 4.53 1.7 9.45 7.36 3.39 5.98 7.13 0.87 3.31 4.17 1.1024 83.82 656.09

35 271 171,704 3900 5.31 2.0 10.98 8.62 3.94 7.01 8.31 1.14 3.86 5.12 1.2205 137.10 1537.70

40 426 269,946 3600 6.30 2.0 12.52 9.72 4.41 8.27 9.69 1.14 4.37 5.71 1.3386 202.85 2870.38

45 584 369,959 3200 7.09 2.2 13.62 10.94 4.96 9.25 10.79 1.14 4.84 6.50 1.6929 273.90 4647.28

50 797 504,490 2900 7.68 3.0 15.31 12.36 5.67 10.00 12.05 1.50 5.55 7.20 1.7717 396.96 8542.80

55 1132 716,907 2650 8.46 3.0 16.73 13.54 6.26 10.98 13.15 1.50 6.22 7.99 1.7717 513.56 12950.88

60 1328 840,817 2450 9.25 3.1 17.99 15.12 7.01 12.01 14.41 1.02 6.65 8.98 1.9291 642.44 17734.85

70 2053 1,301,053 2150 11.02 3.9 20.75 17.76 8.17 14.02 16.73 1.14 7.72 10.47 2.4606 1008.12 37212.44

24

BIB

BY T

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sRange

of C

ouplings

D.B.S.E.

CC

B

D.B.S.E.

CC

B

D.B.S.E.

CC

B


Type FD Versions A, B, and C Sizes 10 - 70Double engagement couplings for horizontal shafts with capacity for axial movement

Type FDA

Uses shortened hubs. This type is identicalto the FD but with a plate fitted toensure that movement is shared betweenthe two halves.

Type FDB

Similar to version A except that the hubsare reversed. Sizes 10-30 use standardsleeves. Larger sizes have appropriatelylengthened teeth.

Type FDC

Full length teeth in sleeves, special hubsand extended long boss with no shortboss.

Telescopic couplings are able toaccommodate movement of hubs relative toeach other while still transmitting the ratedcapacity. Couplings still accept parallel offsetand angular misalignment but to a limiteddegree.

The types illustrated are a selection of thosewhich can be offered. Should your axialrequirements exceed those specified, pleasesend details so that we can put forwardalternative proposals.

See page 15 for other dimensions. All dimensions shown are subject toconfirmation.

General arrangement drawings areavailable which show certifieddimensions.

Dimensions in inchesB C DBSE Allowable

Size Max Max Min movement

10 3.50 1.39 0.73 0.41 0.32

15 4.02 1.74 0.54 0.41 0.12

20 5.00 2.19 0.61 0.41 0.20

25 6.26 2.63 1.01 0.57 0.44

30 7.36 3.12 1.13 0.57 0.56

35 8.62 3.63 1.36 0.65 0.71

40 9.72 4.10 1.52 0.77 0.75

45 10.94 4.54 1.87 0.93 0.94

50 12.36 5.20 1.95 1.01 0.94

55 13.54 5.87 1.80 1.01 0.79

60 15.12 6.25 2.63 1.88 0.75

70 17.76 7.18 3.39 2.53 0.87



10 3.82 1.69 0.43 0.30 0.14

15 5.08 1.97 1.14 0.30 0.85

20 5.91 2.44 1.02 0.30 0.73

25 7.40 3.03 1.34 0.37 0.96

30 8.94 3.58 1.77 0.37 1.40

35 10.79 4.21 2.36 0.41 1.95

40 12.64 4.76 3.11 0.54 2.57

45 13.98 5.31 3.35 0.61 2.73

50 16.06 6.02 4.02 0.69 3.32

55 18.50 6.61 5.28 0.69 4.58

60 19.84 7.40 5.04 0.81 4.22

70 23.35 8.70 5.94 1.03 4.91



10 4.96 1.69 1.57 0.30 1.28

15 6.02 1.97 2.13 0.30 1.83

20 7.32 2.44 2.44 0.30 2.15

25 9.13 3.03 3.07 0.37 2.70

30 10.87 3.58 3.70 0.37 3.33

35 12.87 4.21 4.45 0.41 4.04

40 14.80 4.76 5.28 0.54 4.74

45 16.46 5.31 5.83 0.61 5.21

50 18.82 6.02 6.77 0.69 6.08

55 21.10 6.61 7.87 0.69 7.18

60 23.15 7.40 8.35 0.81 7.53

70 27.24 8.70 9.84 1.03 8.81

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