Ruland Manufacturing
Ruland Manufacturing BC32-12-12-A Bellows Coupling 3/4x3/4 In
Connects two 3/4-inch shafts with a stainless-steel bellows and aluminium clamp hubs, handling 400 in-lb peak torque at up to 10,000 RPM
- Zero-backlash motion transfer via stainless-steel bellows
- Clamp-on hubs grip 3/4 in shafts without keyways
- 10 000 RPM rating suits high-speed drives
- 400 in-lb peak torque handles demanding loads
- 01 in parallel misalignment tolerance eases alignment
Bellows Coupling 3/4 Inch Bores
The Ruland Manufacturing BC32-12-12-A is a clamp-type bellows coupling designed to connect two shafts each measuring 3/4 inch in diameter. It transmits motion in precision machinery where backlash must be eliminated and parallel misalignment up to 0.01 inch is present. The stainless steel bellows and aluminum hubs suit clean-room or general industrial environments.
Upgrade From Solid Or Jaw Couplings
Users replacing a rigid coupling or a jaw-style spider coupling gain the ability to absorb 0.01 inch of parallel offset without imposing side loads on bearings. The jump is worth it when the application demands zero backlash and a torque capacity of 400 in-lb maximum, or 200 lb-in dynamic non-reversing, at speeds up to 10,000 RPM.
Sustained Operation At Rated Torque
Under continuous load the bellows flexes repeatedly without the wear or backlash increase seen in elastomer inserts. The coupling maintains its 400 in-lb peak rating and 200 lb-in dynamic rating throughout the 2.31 inch overall length, provided speed stays below 10,000 RPM and misalignment remains within the stated 0.01 inch limit.
Highlights
- Zero-backlash motion transfer via stainless-steel bellows
- Clamp-on hubs grip 3/4 in shafts without keyways
- 10 000 RPM rating suits high-speed drives
- 400 in-lb peak torque handles demanding loads
- 01 in parallel misalignment tolerance eases alignment
Specifications
No published specifications for this item yet.
Questions about this item
What shaft diameter does the 3/4 inch bore accept?
The clamp-on hubs fit round shafts measuring 3/4 inch diameter.
How do the clamp hubs secure to the shafts?
Tighten the integral clamp screws to 200 lb-in dynamic torque rating for a secure hold.
When should the stainless steel bellows be replaced?
Inspect regularly; replace if parallel misalignment exceeds 0.01 in or if fatigue cracks appear.
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