howden roots 33 universal rai-gas pd blower spec ??roots division, dresser industries, inc. it shall...

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  • 2017 Fraserwoods Fabrication & Machining Ltd. 418 Ellis Drive, Units #5-8, 53016 HWY 60, Acheson, AB, Canada T7X 5A7 T: +1(780) 962-1827 F: +1(780) 962-1830 E: info@fraserwoods.ca www.fraserwoods.ca

    Authorized Howden Roots Distributor, Warranty, Service & Repair Facility

    33 Universal RAI-G PD Blower Visit us online: www.fraserwoods.caCall 1-780-962-1827 for technical, application and sales support. Specifications URAI gas blowers feature mechanical seals and Viton o-rings. The seal system is designed to meet or exceed gas industry safety standards, including provisions for purge gas in the headplates. The URAI gas blower uses detachable steel mounting feet for adaptation of drive shaft position to meet vertical or horizontal installation requirements.

    All Universal RAI (URAI) series blowers are heavy duty rotary blowers in a compact, sturdy design engineered for continuous duty and maximum reliability. These blowers have a time-tested lubrication system. Howden Roots exclusive figure-8 gearbox design improves oil distribution to the timing gears and lengthens bearing life.

    This series features a grey iron casing, carburized and ground alloy steel spur timing gears secured to steel shafts with a taper fit and locknut, and grey iron involute impellers. Oversized anti-friction bearings are used, with a heavy duty cylindrical roller bearing at the drive shaft to withstand V-belt pull. Viton lip seals maintain proper lubricant at the bearings.

    Detachable steel mounting feet

    Mechanical Seals

    Rigid onepiece cast iron casing

    Connections in standard pipe sizes

    Straight, precision machined twolobe impellers

    Splash oil lubricated gears

    Carburized and ground alloy steel spur timing gears

    AntiFriction gears and ground steel shafts

    Center-Timed for rotation in either direction

    Flow Range To 195 CFM Max Pressure 12 PSI Max Vacuum 15 Hg Maximum RPM 3600 Minimum RPM 1090 Max T 225F Connection Size 2 FPT Shaft Dia. 0.75 Min Sheave Dia. 5 Drive End Lubrication Grease Gear End Lubrication Oil Oil Sump Gear End Horiz Config 10.5 oz Oil Sump Gear End Vert Config 8.5 oz Bare Unit Weight 69 lbs Shipping Weight 73 lbs Shipping Container Box Container Size (L x W x H) 17 x 16 x 12 Shipping Options Ground Freight, Air or Sea

    Also, available in:

    URAI, URAI-DSL (Dual Splash Lube), URAI-J (WHISPAIR), URAI-J-DSLand URAI-Metric

    mailto:info@fraserwoods.cawww.fraserwoods.ca

  • 2017 Fraserwoods Fabrication & Machining Ltd. 418 Ellis Drive, Units #5-8, 53016 HWY 60, Acheson, AB, Canada T7X 5A7 T: +1(780) 962-1827 F: +1(780) 962-1830 E: info@fraserwoods.ca www.fraserwoods.ca

    Call 1-780-962-1827 for technical, application and sales support.

    33 URAI-G Approximate Oil Sump Capacitates Model No. /

    Drive Shaft Location Gear End Approx. Oil Sump Capacities

    Fl. Oz. Liters

    33 URAI-G (left or right)

    10.5 0.31

    33 URAI-G (top or bottom)

    8.5 0.25

    These capacities are provided to assist stocking the correct amount of oil. Exact sump capacity may differ slightly. Review the proper filling instructions in OEM Manual.

    Recommended Oil Grades

    Ambient* Temp. F (C) ISO Viscosity No. Above 90 (32) 320 32 to 90 (0 to 32) 220 0 to 32 (-18 to 32) 150 Below 0 (-18) 100

    *Ambient temperature is defined as the temperature of the space blower and drive are located.

    33 URAI-G Parts List: 3-1/2 5 Gear Diameter Item Number Part Name Quantity

    1 Headplate Gear End 1

    2 Headplate Drive End 1

    3 Gearbox 1

    4 Timing Gears 2

    5 Cover-Bind (Plug Opening) 1

    7 Gasket, Gear Box 1

    11 Cylinder 1

    12 Impeller & Shaft Drive 1

    13 Impeller & Shaft Driven 1

    14 Bearing, Ball 3

    15 Bearing, Roller 1

    Item Number Part Name Quantity

    16 Pin, Dowel 4

    17 Gear Nut 2

    19 Key 1

    21 Plug, Pipe 3

    23 Screw Hex 8

    25 Breather (Plug Vent) 1

    26 Screw, Hex 14*

    27 Seal, Lip Bearing 4

    31 Screw, Hex, 4

    32 Screw, Hex 4

    33 Seal Lip-Drive 1

    34 Clamp Plate 2

    35 Foot 2

    37 Fitting, Grease 2

    38 Fitting, Relief 2

    39 Washer Mounting 4

    40 Screw Socket 2

    42 Screw Hex 2

    mailto:info@fraserwoods.ca

  • G

    F

    E

    D

    C

    B

    A

    G

    F

    E

    D

    C

    B

    A

    11 10 9 8 7 6 5 4 3 2

    11 10 9 8 7 6 5 4 3 2 1

    THIS DOCUMENT CONTAINS CONFIDENTIAL INFORMATION OF

    ROOTS DIVISION, DRESSER INDUSTRIES, INC. IT SHALL

    BE HELD IN STRICTEST CONFIDENCE, AND BE USED ONLY

    IN CONJUNCTION WITH ROOTS DIVISION BUSINESS.

    MFG. REF.

    CONFIDENTIAL

    DO NOT SCALE FOR DIMENSIONS

    REV

    REF: EP938 CONCENTRICITY

    PERPENDICULARITY

    PROFILE OF LINE

    PROFILE OF A SURFACE

    DIAMETER

    FINISH IN MICRO INCHES

    FLATNESS

    ANGULARITY

    PARALLELISM

    TRUE POSITION

    STRAIGHTNESS

    REVISIONS BY DATE NOTICE

    CHANGE CHKD. APP

    SCALE

    DBV

    APP.

    CHKD.

    DR.

    DATE

    DIMENSIONAL TOLERANCES UNLESS OTHERWISE SPECIFIED

    TWO PLACE DECIMALS (.XX)---.015 FRACTIONAL--1/64

    THREE PLACE DECIMALS (.XXX)--.005

    FINISHED DIMENSIONS

    MAT'L. PATT. No. PART No. PART NAME

    ALL DIMENSIONS SHOWN IN BRACKETS { } ARE MILLIMETERS ORDER

    No.

    No. REQ'D.

    25

    13

    T30099023

    SECTIONAL ASSEMBLY 3-1/2 THRU 5" U-RAI GAS BLOWERS

    A- USE LOCKTITE #2 (30515) BETWEEN HEADPLATE AND CYLINDER JOINTS. B- SEE OPERATING MANUAL IRB-180 FOR GAS BLOWERS FOR LUBRICATION INSTRUCTION. C- 36,45 & 47 REQ'D SOC. HD. ON G.E. ONLY

    E- REQ'D ON 32, 33 & 42 URAI-G ONLY-SEALING WASHERS & BUTTONHEAD CAPSCREWS.

    F- NUT TO BE TORQUED TO: 3-1/2---110 LB.FT. 4-------190 LB.FT. 5-------250 LB.FT.

    NOTES:

    SEE NOTE "F"

    SEE NOTE "C" & "E"

    SEE NOTE "B"

    39

    40

    18

    38

    5

    19

    33

    15

    2

    32

    35 12

    7

    21

    23

    3

    9

    8

    17

    4

    14

    34

    31

    27 1 16

    11

    32

    27

    H

    44

    SEE NOTE " E"

    VIEW "X"

    37

    45

    D

    43

    46

    26

    20

    AGP RK

    RK

    RK

    RK

    ADD ITEMS 8 & 20 (NAMEPLATE & SCREW) RK D

    vc

    07/25/01

    12/05/01

    04/12/02

    FULL RK ADD LIFTING LUG ITEM # 46

    B ADD 33 URAI-G TO NOTE E AND DEL. FROM NOTE C

    VC

    RK

    PICTURE CHANGE A PROTO

    A

    A

    T102 AGP

    C T122 AGP

    08/16/02 T129

    F:\ FILE\ FORM\ DSIZE.GCM

    Assembly of UNIVERSAL RAI-G Series Gas Blowers, 3-1/2" through 5" Gear Diameter

  • 2017 Fraserwoods Fabrication & Machining Ltd. 418 Ellis Drive, Units #5-8, 53016 HWY 60, Acheson, AB, Canada T7X 5A7 T: +1(780) 962-1827 F: +1(780) 962-1830 E: info@fraserwoods.ca www.fraserwoods.ca

    Frame Size

    Speed RPM

    1 PSI 2 PSI 3 PSI 4 PSI 5 PSI 6 PSI 7 PSI 8 PSI 10 PSI 11 PSI 12 PSI 13 PSI 14 PSI 15 PSI VACUUM DATA

    CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP *HG CFM BHP

    33 URAI-

    G

    1200 1800 2500 3600

    52 89

    132 200

    0.3 0.5 0.9 1.2

    42 80

    123 190

    0.6 1.0 1.5 2.1

    36 72

    116 183

    1.0 1.5 2.2 3.1

    29.6 66.5 110 177

    1.3 1.9 2.9 4.1

    24 61

    104 172

    1.6 2.4 3.5 5.0

    20 57

    100 167

    1.9 2.9 4.2 6.0

    - 52 95

    163

    - 3.4 4.9 7.0

    - 48 91

    159

    - 3.9 5.6 7.9

    - 40 84

    152

    - 4.8 6.9 9.9

    - -

    80.4 148

    - -

    7.6 10.8

    - -

    .77 145

    - -

    8.2 11.8

    - - - -

    - - - -

    - - - -

    - - - -

    - - - -

    - - - -

    8 10 13 15

    23 51 80

    137

    1.3 2.4 4.3 7.3

    33 Universal RAI-G Dimensions

    GD A B C D D E MIN E MAX F MIN F MAX G H K M

    3.50 7.25 7.63 12.13 5.00 5.00 2.50 2.88 3.00 3.25 .25 .44 1.75 3.81

    N O O P R U KEYWAY W NPT. V AA AB AD AE AF

    2.44 12.81 8.88 7.75 6.75 .750 .188 X .094 2 1.63 3.88 6.06 1.91 5.00 12.13

    mailto:info@fraserwoods.ca

  • 2017 Fraserwoods Fabrication & Machining Ltd. 418 Ellis Drive, Units #5-8, 53016 HWY 60, Acheson, AB, Canada T7X 5A7 T: +1(780) 962-1827 F: +1(780) 962-1830 E: info@fraserwoods.ca www.fraserwoods.ca

    \

    PERFORMANCE BASED ON AIR, INLET @ 14.7 PSIA & 68F PERFORMANCE BASED ON AIR, INLET @ 68F DISCHARGE PRESSURE = 30 Hg ABS.

    PRESSURE PERFORMANCE 33 URAI

    MAX. PRESSURE RISE = 12 PSI / MAX. SPEED = 3600 RPM

    VACUMM PERFORMANCE 33 URAI

    MAX. VACUUM RISE = 15 Hg / MAX. SPEED = 3600 RPM

    mailto:info@fraserwoods.ca

  • S P E C I F I C AT I O N S

    S-60A01

    ROOTS Universal RAI-GRotary Positive Gas BlowersFrames 32 thru 615

    Two figure-eight lobe impellers mounted on parallelshafts rotate in opposite directions. As each impellerpasses the blower inlet, it traps a definite volume of gasand carries it around the case to the blower outlet, wherethe gas is discharged. With constant speed operation,the displaced volume is essentially the same regardlessof pressure, temperature or barometric pressure.

    Timing gears control the relative position of the impellersto each other and maintain small but definite clearances.This allows operation without lubrication being requiredinside the gas casing

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