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Heavy Duty Round Cap U-Joint Identifier

Spring Tab and Outside Snap Ring Style U-Joint
Measuring Diagram and Series Chart

The u-joint series classifies the size of the universal joint based on the cap diameter and width over the bearing caps.

Over Caps:
When measuring the u-joint, compress the caps and measure from outside of cap to outside of cap. If measuring a yoke, measure from outside ear to outside ear.

Cap Diameter:
When measuring the u-joint cap, measuring the bearing cap diameter. If you are measuring the end yoke, measure the width of the opening where the cap sits in the yoke.

 Spring Tab and Outside Snap Ring U-Joint Series Chart

We recommend using a caliper or micrometer to most accurately measure u-joints. U-joint caps must be compressed when measuring over the caps. Once you have recorded your measurements, refer to the dimensional chart to find your series.

 Series Over Caps Bearing Cap Diameter
SPL 140 5.461 IN (138.71 mm)
1.937 IN (49.20 mm)
SPL 170 6.456 IN (164.00 mm)
2.165 IN (55.00 mm)
SPL 250
6.417 IN (163.00 mm)
1.938 IN (60.00 mm)
RPL 35 7.000 IN (177.80 mm) 1.938 IN (60.00 mm)