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Aluminium 6-beam clamp coupling, 1-1/4 inch OD, 1-3/4 inch long

Ruland Manufacturing

Ruland Manufacturing FCR20-6-6-A 6-beam clamp coupling 3/8 x 3/8 in

SKU CH-RXQG-GB5BV

Six-beam aluminium clamp coupling joins two 3/8 in shafts, handles 3° angular and 0.015 in parallel misalignment, rated 61 in-lb at 6,000 RPM

  • Aluminium construction reduces weight and resists corrosion
  • Six-beam design allows up to 3° angular misalignment
  • Clamp-on locking secures shafts without keyways or set screws
  • Rated for 6 000 RPM and 61 in-lb maximum torque
  • Torsional stiffness of 20.83 in-lb/deg ensures precise motion transfer

6-Beam Aluminum Clamp Coupling

The Ruland Manufacturing FCR20-6-6-A is a six-beam flexible coupling machined from aluminum. It connects two 3/8 inch round shafts using integral clamp collars. The design handles angular offsets up to 3 degrees and parallel misalignment of 0.015 in while transmitting motion at speeds up to 6,000 RPM.

Verify Shaft Diameter and Space

Confirm both shafts measure exactly 3/8 inch diameter before ordering. The coupling outside diameter is 1 1/4 in and overall length is 1 3/4 in, so check that your assembly has the required radial and axial clearance. Ensure the operating torque stays below the 61 in-lb limit and that the 0.01 in axial motion allowance suits your application.

Suits Light-Duty Precision Linkages

This coupling suits instrumentation, stepper drives and low-torque motion control where zero-backlash and high torsional stiffness of 20.83 in-lb/Deg are needed. It is not for high-torque power transmission or environments where the Proposition 65 listed chemicals are unacceptable. Builders needing larger bores or different bore combinations should look at other models.

Highlights

  • Aluminium construction reduces weight and resists corrosion
  • Six-beam design allows up to 3° angular misalignment
  • Clamp-on locking secures shafts without keyways or set screws
  • Rated for 6 000 RPM and 61 in-lb maximum torque
  • Torsional stiffness of 20.83 in-lb/deg ensures precise motion transfer

Specifications

No published specifications for this item yet.

Questions about this item

What comes with the FCR20-6-6-A clamp coupling and what must I source separately?

The package contains the aluminium 6-beam clamp coupling itself; you will need to supply the two 3/8 in round shafts and any mounting hardware.

How do I decide between the listed bore options for this coupling?

This model has a single 3/8 in by 3/8 in bore configuration, so there is no alternative bore size to select.

What does the 61 in-lb maximum torque rating mean when the coupling is installed?

It is the highest continuous torque the coupling can transmit at up to 6,000 RPM without exceeding its design limits.

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