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Small metal bellows coupling, silver aluminium hubs, stainless steel bellows, clamp-style bore 1/2 inch each side

Ruland Manufacturing

Ruland Manufacturing BC26-8-8-A Coupling Bellows Clamp 1/2x1/2 In

SKU CH-JT29-MQHEX

Bellows clamp coupling joins two half-inch shafts with stainless-steel bellows and aluminum hubs, handling 250 in-lb peak torque at 10,000 RPM

  • TypeCouplings, Collars & Adapters
  • Precise alignment with 0.01 in parallel misalignment tolerance
  • High-speed capability up to 10,000 RPM for demanding applications
  • Strong torque handling with 250 in-lb maximum rating
  • Corrosion-resistant stainless steel bellows for long service life
  • Secure clamp-on locking ensures reliable shaft connection

Precision Motion Coupling

The Ruland BC26-8-8-A is a bellows clamp coupling designed for motion control systems requiring precise torque transmission between two half-inch shafts. Its stainless steel bellows and aluminum hubs suit applications needing zero backlash and high torsional stiffness in a compact inch-series format.

Speed and Alignment Limits

The coupling operates at a maximum speed of 10,000 RPM with a peak torque capacity of 250 in-lb and a non-reversing dynamic torque of 125 lb-in. It accommodates parallel misalignment up to 0.01 in while maintaining a 1.63 in clearance diameter for installation space planning.

Clamp Installation Notes

The clamp-on locking mechanism secures to round shafts without keyways, simplifying assembly when 0.95 in of length through bore is available per hub. Users must verify shaft tolerances match the half-inch bore specification and observe California Proposition 65 warnings regarding chemical exposure during handling.

Highlights

  • Precise alignment with 0.01 in parallel misalignment tolerance
  • High-speed capability up to 10,000 RPM for demanding applications
  • Strong torque handling with 250 in-lb maximum rating
  • Corrosion-resistant stainless steel bellows for long service life
  • Secure clamp-on locking ensures reliable shaft connection

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

How do I decide between the listed bore options?

This coupling has identical 1/2 inch bores on both ends, so there is no bore-size choice to make.

What does the 10,000 RPM rating mean once the coupling is installed?

It is the maximum rotational speed the bellows can sustain without exceeding its dynamic limits.

How does the clamp-on locking style affect the torque I can transmit?

The clamp hubs hold round shafts securely and the assembly is rated for 250 in-lb maximum torque.

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