Problem this solves
Taper lock pulleys are easier to service, while finished-bore pulleys can be better for fixed, exact shaft setups. This guide helps you choose the right mounting style before ordering.
Selection steps
- 1Confirm shaft size, keyway, and tolerance requirements.
- 2Decide whether quick field replacement or fixed-machined fit matters more.
- 3Check if hub space and taper series options are available for the pulley size.
- 4Review alignment, concentricity, and repeatability needs for the drive.
- 5Include RPM and maintenance access details in the RFQ.
Taper lock vs finished bore comparison
| Factor | Taper lock pulley | Finished bore pulley |
|---|---|---|
| Installation speed | Fast field installation and removal | Slower if machining or press fit is needed |
| Serviceability | Bush can be replaced separately | Pulley removal may take more downtime |
| Fit repeatability | Good when series is matched correctly | High when machined to the exact shaft spec |
| Inventory flexibility | One pulley can suit multiple shaft sizes via bushes | Each bore is fixed to one shaft size |
| Best for | MRO, interchangeable stock, fast maintenance | OEM builds, fixed assemblies, exact finished bores |
Include with your RFQ
- Pulley profile, groove count, and OD
- Shaft size and keyway dimensions
- Preferred mounting style: taper lock or finished bore
- Taper series if already known
- Maintenance or changeout constraints on site
A taper lock pulley is not automatically the better choice
Use taper lock when interchangeability and maintenance speed matter. Use finished bore when the shaft fit and assembly standard are already fixed and controlled.