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Mountable shaft collars with face holes are designed to mate directly with components such as sprockets, pulleys, and metallic plates. Ruland manufactures them with drilled holes for mounting flexibility or threaded holes for the most secure connection between the collar and mated component. They are offered in steel, aluminum, and 303 stainless steel in bore sizes ranging from 3/8” to 2” and 10mm to 50mm.
Explore More >> Clamp style universal joints improve over set screw style because they do not mar the shaft, offer infinite adjustability, and can be used on all shaft types. Ruland is the only North American supplier of clamp style universal joints and manufactures the clamp feature, bores, and keyways in our advanced manufacturing facility in Marlborough, MA USA. They are available in sizes from 1/4" to 1 1/4” in steel for high strength and stainless steel for corrosion resistance.
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| Dimension | |||
|---|---|---|---|
|
Bore (B1) Larger inner diameter. Should match nominal shaft diameter. |
6 mm |
Bore Tolerance Variance in finished bore range before installation. |
+0.050 mm / +0.012 mm |
|
Outer Diameter (OD) |
20 mm |
Clearance Diameter (C) MAX Minimum diameter required to avoid interference with hardware. |
21.50 mm |
|
Width (W) |
5.5 mm |
Width Tolerance |
+0.076 mm / -0.254 mm |
|
Recommended Shaft Tolerance Acceptable variance in nominal shaft diameter before performance loss. |
+0.000 mm / -0.013 mm |
||
| Fastening Hardware | |||
|
Forged Clamp Screw Inch or metric socket head cap screw size. |
M2 x 6 |
Screw Material |
Alloy Steel |
|
Hex Wrench Size Wrench size that fits the screw head to tighten or loosen the screw. |
1.5 mm |
Screw Finish Surface finish and treatments on supplied hardware. |
Black Oxide |
|
Seating Torque Torque required to install supplied hardware. Use torque wrench for accurate seating torque. |
0.6 Nm |
Screw Location (R) |
7.75 mm |
|
Number of Screws |
1 ea |
||
| Additional Information | |||
|
Material Specification |
2024-T351 Aluminum Bar |
Bright, No Plating |
|
|
Manufacturer |
Ruland Manufacturing |
Country of Origin |
USA |
|
Temperature Minimum and maximum operating temperature. Operating temperature includes ambient temperature plus or minus factors such as system heat generated during operation, washdown, vacuum, etc... |
-40°F to 225°F (-40°C to 107°C) |
Weight (lbs) |
0.009200 |
|
UPC |
634529137802 |
Tariff Code |
8483.60.8000 |
|
UNSPC Code used to identify products to standardize nomenclature around the world. |
31162811 |
||
| Product Notes | |||
|
Note 1 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
|
|
| CERTIFICATIONS/STANDARDS | |||
|---|---|---|---|
| ISO 9001:2015 | Conflict Minerals | ||
| RoHS3 | REACH | ||
WARNING This product can expose you to the chemical Ethylene Thiourea, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
