How to find the right Clamp-On Shaft Collars AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Clamp-On Shaft Collars
- One-piece vs two-piece
- Use two-piece when the collar must go on mid-shaft without disassembly or when you want the most even clamping. One-piece is fine when you can slide it on from the shaft end. Two-piece collars wrap around the shaft and spread clamping force more evenly.
- Bore fit
- Match the nominal shaft size exactly, in the same unit system. The split closes only slightly, so an oversize bore will not clamp properly.
- Material vs load
- Use steel or stainless for the highest axial holding power. Use aluminum for light loads, low weight or non-magnetic needs. Collar material and screw material together determine how much load the collar holds before slipping.
- Face squareness
- Choose collars with a face held square to the bore when they locate bearings or act as stops. An out-of-square face loads mating parts unevenly.
- Seating torque
- Tighten to the maker's specified torque for that collar size. This is what achieves the rated holding power without stripping or cracking.
Brands that matter
- Ruland: Precision one- and two-piece clamp collars in many materials and sizes.
- Climax Metal Products: Broad line of one- and two-piece clamp collars.
- Stafford Manufacturing: Offers split clamp collars, including specialty styles.
What to avoid
- Collars with no stated bore size or material
- Using a clamp collar as a heavy thrust stop without checking the axial load capacity
- Reusing collars with stripped or galled screws
Questions
Will a clamp collar mark a hardened shaft?
No. It grips by closing around the shaft rather than biting into it, which makes it the usual choice for hardened and precision shafts.