Hardware Torque Charts Collar de Eje in Shell
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Plastic Torque Chart

Unlike the rest of our standard shaft collars and couplings that have a single torque rating per screw size, plastic shaft collars are extremely dependent on collar size to determine acceptable torque limits. The following table should be used only as a guideline to tighten plastic collars. Due to the elastic nature of plastics, it is recommended that screw torque be applied in a slow and steady manner as to not induce extra shock into the plastic resulting in premature collar failure.

Stainless
Screw Size
Collar
Size
Seating Torque
(in-lb)
Typical Axial Load
(lbs)
#4-40 CL-4-P 2.0 100
#6-32 CL-6-P 5.0 120
#8-32 CL-8-P 7.5 175
#10-32 CL-10-P 10.0 170
1/4-28 CL-12-P 21.0 310
CL-16-P 15.0 250
CL-20-P 25.0 305
CL-24-P 28.0 450
5/16-24 CL-28-P 40.0 625
CL-32-P 50.0 600

Shaded is not a standard size.

LIABILITY DISCLAIMER

The information chart presented on this page are typical values under certain test conditions and are not a guarantee of average values nor a guarantee of maximum or minimum values under all conditions. Thrust values shown are FAILURE MODE. They are shown solely for the reader to utilize appropriate testing equipment to make his/her own evaluation, and are not intended by Ruland Manufacturing Co., Inc., as warranties, either express or implied, of fitness for a given purpose. A full disclaimer and limited warranty can also be found on this site.
 
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