Application, Installation and Maintenance Instructions Clarke Universal Flexible Connecting Shafts

Sizes CDS10 thru CDS50 For Diesel Driven Fire Pumps

08Apr08 Page 1 of 14 C132355 09Oct18

How to Use This Manual This manual provides detailed instructions on applications, installation, lubrication, maintenance, parts identification, and dimensional data. Use the table of contents below to locate required information. Table of Contents INTRODUCTION Page 1 APPLICATION GUIDELINES Page 1 LUBRICATION Page 1 INSTALLATION INSTRUCTIONS Page 1 ANNUAL MAINTENANCE Page 3 ALIGNMENT PROCEDURE Page 4 PARTS IDENTIFICATION Page 8 PARTS ORDERING INFO Page 9 DIMENSIONAL DATA Page 10 TROUBLE SHOOTING Page 11 CAREFULLY FOLLOW THE INSTRUCTIONS IN THIS MANUAL FOR OPTIMUM PERFORMANCE AND TROUBLE FREE SERVICE. INTRODUCTION This manual applies to sizes CDS10 thru CDS50 Clarke Universal Joint Driveshafts. These driveshafts are designed to operate in the horizontal position. Driveshafts should be installed in accordance with the Standard for Installation of Stationary Pumps for Fire Protection, NFPA 20. APPLICATION GUIDELINES Certified driveshafts (for rated BHP’s and speeds given in table below) can only be used with Centrifugal Fire Pumps (Service Factor 1.0). Contact Clarke for application guidelines for Positive Displacement Fire Pumps (Service Factors 1.5 to 2.25). The engine driver BHP shall not exceed the selected driveshaft BHP rating as defined in Table 1.

Table 1

Table 1

See Appendix A showing how Table 1 values are established. Driveshafts are not Listed for service with electric motors. Shaft hubs are designed for clearance fit with set screw over keyways. It is recommended that a torsional analysis be conducted on the actual drive system arrangement. See Appendix B for required mass elastic information. LUBRICATION Cross and bearing and sliding splines contain only enough grease to provide protection during shipment. It is necessary to lubricate by zerk fittings prior to start-up to avoid premature failure. Use a good quality lithium base E.P. grease meeting N.L.G.I. grade 2. Several greases meeting these specifications Lubriplate 1200-2, Shell Alvania EP2 or Mobil Mobilux EP2. Add lubricant to universal joint until clean lubricant appears at all four bearing seals and until lubricant appears at pressure relief hole for spline lubrication on variable length shafting. It may be necessary, while applying grease gun pressure, to move the drive shaft from side to side to allow greater thrust clearance on a seal end that is not purging. Lubrication intervals should be done on an annual basis. Adverse conditions such as extreme temperatures, wet or corrosive environment may require special greases and more frequent lubrication. INSTALLATION INSTRUCTIONS WARNING: Lockout starting switch of prime mover and remove all external loads from drive before installing or servicing couplings.

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CAUTION: Consult applicable local and national safety codes for proper guarding of rotating members. Observe all safety rules when installing or servicing couplings. Horizontal Installation Check flange bores and shaft diameters for proper fit. All mating surfaces, bores and faces must be clean and free from grease, oil, dirt, nicks and other contaminates to insure a proper fit and function of mating parts. The shaft should not extend beyond the flange face. Stock bored flanges are bored to +.001 / -.000 tolerance. This allows the flange to be gently tapped onto the driving and driven shafts. One set screw over keyway is provided to lock the flange into position. For light interference or shrink fits heat the flange uniformly (preferably submerged in oil not exceeding 350° F) to expand the bore. Align the keyways in both the shaft and flange, slide flange onto shaft and allow to cool. CAUTION: Do not attempt to hammer an undersized flange on without heat. After installing companion flanges, check the run-out of the flange face and pilot diameter (.005 T.I.R. maximum permissible). Splined telescoping assemblies should not be disassembled to avoid misalignment and unbalance. Shaft yokes must be aligned in phase. Check the match markings. To insure long life and trouble free operation, units should be regularly inspected to insure that bolts are tight, mating flanges are secure and lubrication seals and zerk fittings are intact. Any unusual sound or vibration should be located and corrected immediately. WARNING: WHEREVER PEOPLE OR EQUIPMENT CAN BE ENDANGERED BY ROTATING UNIVERSAL SHAFTS, SAFETY DEVICES MUST BE PROVIDED BY USER!

Lower compressed U-Joint Coupling into position and extend ends so that the pilot is seated firmly into mating companion flange and bolt holes are lined up.

Check that assembly isn’t bottomed out or fully extended. Insert bolts/studs and tighten to specified torque indicated in Table 2.

TABLE 2 Companion Flange Torque Specifications

Driveshaft Series

Bolt Size Grade Torque

CDS10 7/16-20 8 (Hi-Tensile) 50 Ft-lbs CDS20 1/2 – 20 8 (Hi-Tensile) 75 Ft-lbs CDS30 3/8 - 24 8 (Hi-Tensile) 30 Ft-lbs CDS50 7/16 - 20 8 (Hi-Tensile)) 50 Ft-lbs

NOTE: Torque values based on lightly oiled threads. Once components are properly seated, graduate up to final torque value.

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EQUIPMENT ALIGNMENT: The alignment procedures can be found on page 4, 5, 6 and 7 of this document as well as the label applied to the driveshaft guard. The equipment shall be designed such that the driver and driven shaft centerlines are parallel, but there shall be an offset of the shaft centerlines. The joint operating angle shall be within 2° + 1°. Parallel offset

ß°1

ß°2

A

B

An offset "A", of 1/8" to 5/8" per foot of joint coupling measured joint center to joint center, distance "B", is equivalent to approximately 1.0° to 3°. (°1 = °2) Angular Misalignment

ß°1 ß°2

The defection angles (°1 & °2) of both joints must also be equal to one another within ±0.5°. The driver and driven shaft centerlines must intersect at the center of the drive shaft. (°1 = °2) ANNUAL MAINTENANCE For extreme or unusual operating conditions, check driveshaft more frequently. 1. Re-check alignment per steps in alignment procedure

section in this manual. If the misalignment limits are exceeded, realign the driveshaft.

2. Check tightening torques of all fasteners. 3. Inspect seal rings and gaskets to determine if

replacement is required. If leaking grease, replace. 4. Lubricate shaft per lubrication section in this manual.

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ALIGNMENT PROCEDURES

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DIMENSIONAL DATA

Dimension Data (inches) Model L1 L2 A

Angle ߺ

B C H I K M T U W Wgt.(lbs)

CDS10-SC 9.50 .75 4.56 8 3.750 2.750 .438 4 4.69 1.69 1.188 4.187 1.50 15.1 CDS20-SC 9.75 1.00 5.88 8 4.750 3.750 .500 4 5.63 2.00 1.375 4.964 1.75 25.5 CDS20-S1 14.17 1.77 5.88 22 4.750 3.750 .500 4 5.63 2.00 1.375 4.964 1.75 29.5 CDS30-S1 14.17 1.77 6.88 22 6.125 6.625 .375 8 7.00 2.75 1.875 5.312 2.00 52.0 CDS50-SC 18.89 1.89 8.00 20 7.250 7.750 .438 12 9.13 3.38 1.937 7.547 3.00 93.5 Torque Limits (ft/lbs) [For Torsional Vibration Analysis] Mass Elastic Data (see note 6) Variable Length Driveshaft Weights

Series Pulsating (see note

4) Reversing (see note 5) Model

WR2 (lb-ft2)

KT (in-

lbs/radian) Model

L3

L4 +/-

Weight

(lbs)

Weight per

Sub-tractional

inch (lbs)

S

S1

CDS10 800 570 CDS10-SC .148 542,600 CDS10-36 36 1.75 24.0 .252 3.50 .083

CDS20 990 710 CDS20-SC .474 1,379,340 CDS20-36 36 1.25 39.9 .288 3.50 .095 CDS30 1940 1390 CDS20-S1 .606 672,590 CDS30-36 36 2.44 53.0 .401 3.50 .134 CDS50 3290 2350 CDS30-S1 1.380 779,220 CDS50-36 36 1.69 102.4 .521 4.50 .134

CDS50-SC 3.622 2,841,870

Notes:

1) Driveshaft is designed for minimum B-10 Life of 5000 hours. 2) Design driveshaft vertical parallel offset angle is to be 2 degrees + 1degree. 3) Design driveshaft horizontal parallel offset angle is to be 0 degrees + .5 degree 4) Pulsating torque limit must be applied when the alternating torque exceeds the mean torque rating of the shaft (derived

from Table 1) but remains a positive torque at all times. 5) Reversing torque limit must be applied when the alternating torque exceeds the mean torque rating of the shaft

(derived from Table 1) and crosses the zero torque axis at any time. 6) Data applies to SC and S1 model shafts only. Contact Clarke for variable length driveshaft values.

I I I

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TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

VIBRATIONS 1. Operating near critical or half critical speed resonance. Consult Clarke. Rework using different tube sizes. 2. Operating at or near driver or driven equipment

natural frequency. Consult with equipment manufacturer.

3. Driver or driven components out of balance. Consult with equipment manufacturer. 4. Pump noise. Consult pump manufacturer. 5. Shaft yokes not in phase Disassemble and align yoke.

6. Flange faces not seated. Check for burrs or grit and reseat. Check tightening torque for all fasteners.

7. Operating speed within a torsional vibration mode. Perform torsional analysis. Consult Clarke. 8. Driver and driven shafts/Companion flange not

parallel within 1°. Align and adjust, shim structure if necessary.

9. Driver and driven shaft run-out Consult manufacturer. 10. Flange face or pilot run-out exceeding .005" TIR. Check fit, if exceeds consult manufacturer. 11. Exceeding maximum joint acceleration. Reduce angle and/or speed.

12. Dry or brinelled (needle bearing indentations) Replace defective joints / Check lubrication. Review operating parameters

13. System resonance/vibration

Perform vibration analysis. Consult equipment manufacturer.

14. Excessive radial movement at the slip yoke or binding movement

Lack of lubrication, overload condition. Consult Clarke.

15. Companion flange, fastener loose. Secure fastener / Check for vibrations

FLANGE

SLIPPING OFF SHAFT

1. Set screw over keyway tightened improperly. Tighten set screw. 2. Exceeding weight limitations for stock bored

flanges/shaft diameter undersize. Add additional set screw or replace with interference fit bore flange/locking collar.

  100 PROGRESS PLACE            GRANGE WORKS LOMOND RD   CINCINNATI, OHIO 45246          COATBRIDGE, SCOTLAND ML5 2NN   UNITED STATES OF AMERICA          UNITED KINGDOM   TEL: +1‐513‐475‐3473            TEL: +44‐1236‐429‐946   FAX: +1‐513‐771‐8930            FAX: +44‐1236‐427‐274 

Specifications and information contained in this brochure subject to change without notice.

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