CD® Coupling
Ordering Procedures



1- Provide the complete model number. 
Example:  6P30.

2- Specify bore sizes.  Example:  0.625 x 0.750:

3- Standard Clearance fits provided, unless otherwise specified. Click to see bore tolerances

• If a tapered bore is required, supply dimensions.
• If a hydraulic bushing such as an ETP is specified, please give model number and bore size selected.
• If a tapered bushing is to be used, please give model number and bore size.

4- If keyways are to be omitted or are non-standard, please specify.  Click for standard keyway data.

5- Identify any special application requirements
such as:

• Dynamic balancing
• Other corrosion protection coatings
• Shortened or lengthened hub
• Puller holes
• Special tolerances
• Any other special application requirements
 

Standard Keyway Data

Standard Keyways - Inch Bore Hubs
Bore Size Keyway Bore Size Keyway
Over To Over To
0.437 0.562 0.125 x 0.062 2.312 2.750 0.625 x 0.312
0.562 0.875 0.187 x 0.094 2.812 3.250 0.750 x 0.375
0.875 1.250 0.250 x 0.125 3.312 3.750 0.875 x 0.437
1.250 1.375 0.312 x 0.156 3.812 4.500 1.000 x 0.500
1.375 1.750 0.375 x 0.187 4.562 5.500 1.25 x 0.625
1.750 2.250 0.500 x 0.250 5.562 6.500 1.500 x 0.750

Standard keyways are for square keys.  Keyways for rectangular keys are available; consult factory.

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Standard Keyways - Metric Bore Hubs
Bore Size Keyway Bore Size Keyway
Over To Over To
10 12 4 x 1.8 58 65 18 x 4.4
12 17 5 x 2.3 65 75 20 x 4.9
17 22 6 x 2.8 75 85 22 x 5.4
22 30 8 x 3.3 85 95 25 x 5.4
30 38 10 x 3.3 95 110 28 x 6.4
38 44 12 x 3.3 110 130 32 x 7.4
44 50 14 x 3.8 130 150 36 x 8.4
50 58 16 x 4.3 150 170 40 x 9.4

Note:  Inch bore hubs will be supplied with inch size set screws.  Metro bore hubs will be supplied with metric size set screws.

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Bore Tolerances
Nominal Bore Tolerance
Shaft Diameter Class 1
Clearance Fit		 Interference
Fit
Over To
0.437 1.500 -.000 +.001 -.001 -.0005
1.5000 2.000 -.000 +.001 -.002 -.001
2.000 3.000 -.000 +.0015 -.002 -.001
3.000 4.000 -.000 +.0015 -.003 -.0015
4.000 5.000 -.000 +.002 -.0035 -.002
5.000 6.000 -.000 +.002 -.004 -.0025

Based on nominal shaft diameter (AGMA Standard 511.02) Clearance Fit Standard.
Metric hub bores will be supplied with H7 clearance fit as standard.  S7 interference fit available.
 


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The right to make engineering refinements on all products is reserved.
Dimensions and other details subject to change.
When dimensions are critical, detailed drawings should be obtained from the factory.

Send mail to zero-max@zero-max.com with questions or comments about this web site.
13200 Sixth Avenue North • Plymouth, MN 55441
1-800-533-1731 • 763-546-4300 • Fax:763-546-8260

Copyright© 2007 Zero-Max, Inc.