BOLTTE CPB & CPBC Aluminum Bellows Shaft Couplings - 16-65 mm OD
BOLTTE aluminum bellows couplings connect motor and driven shafts in servo, stepper-motor, encoder and precision-motion assemblies. The metal bellows section provides high torsional stiffness while accommodating small axial, angular and parallel misalignment.
Configuration guide
- CPBC configurations use clamp hubs; CPB configurations use set-screw hubs.
- Standard outer diameters range from 16 mm to 65 mm.
- Overall length and supported bore range are shown in the configuration selector.
- Standard hubs are aluminum alloy with a stainless-steel bellows section.
CPB versus CPBC: select fastening before bore machining
CPBC uses clamp hubs and CPB uses set-screw hubs in this bellows-coupling range. Choose the exact size and fastening arrangement before specifying the two finished bores.
| Selection detail | What to check |
|---|---|
| CPBC Clamp / OD 16 x L 27 mm | A listed clamp configuration with a 4–8 mm bore range. |
| CPB Set-Screw / OD 16 x L 27 mm | A separate fastening configuration despite the same outside dimensions. |
| Keyway add-on or custom option | Provide complete dimensions and clarify what the selected option supplies before purchase. |
Can a bellows coupling correct unrestricted misalignment?
No. Verify the model's permitted axial, angular and parallel misalignment along with torque and speed; align the shafts within the specified operating limits.
Related selection references
Compare the drawings and intended function; these references are not a statement of direct interchangeability.
Ordering and installation
- Select the required series, outer diameter, overall length and bore range.
- Enter both finished shaft bore dimensions, D1 and D2, in the order requirements.
- For the keyway add-on or custom stainless-steel configuration, provide complete machining dimensions before purchase.
- Confirm shaft tolerances, keyway requirements, torque, speed and installation clearance for the application.
- Align both shafts carefully and tighten the hub fasteners evenly.
