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One-piece carbon steel rigid shaft coupling with two 1 1/8 inch keyed bores

Ruland Manufacturing

Ruland Manufacturing CLC-18-18-F rigid shaft coupling

SKU CH-V06J-0AD49

One-piece carbon-steel rigid coupling joins two 1 1/8 in keyed shafts with a 4,000 in-lb torque rating

  • One-piece carbon steel construction ensures rigid torque transmission
  • Identical 1 1/8 in keyed bores simplify shaft alignment
  • 18 in clearance diameter fits compact machine envelopes
  • Rated for 4,000 RPM continuous operation in high-speed drives
  • Withstands 4,000 in-lb peak torque without backlash

Rigid Coupling for 1 1/8 Inch Shafts

This one-piece carbon steel coupling joins two shafts that each measure 1 1/8 inches in diameter. The round keyed bores accept standard keyways of 1 1/4 inch width and 1 1/8 inch depth. It is built for power transmission applications where zero backlash and precise alignment are required. The unit is rated for up to 4,000 RPM and 4,000 in-lb of torque.

One-Piece Carbon Steel Construction

The single-piece design eliminates the need for separate hubs, hardware or flexible elements, reducing part count and potential failure points. An outside diameter of 1 7/8 inches and overall length of 3 1/8 inches define the installed envelope, while a 2.18 inch clearance diameter indicates the space needed for assembly. Identical bore dimensions on both ends simplify inventory and installation.

Replaces Multi-Part or Flexible Couplings

This coupling upgrades assemblies that currently use two-piece rigid couplings, jaw couplings or gear couplings where backlash-free torque transfer is critical. The jump is worth it when the application demands maximum torsional stiffness and the shafts can be held in precise alignment. It is not suited for systems with angular or parallel misalignment, nor for shafts of differing diameters.

Highlights

  • One-piece carbon steel construction ensures rigid torque transmission
  • Identical 1 1/8 in keyed bores simplify shaft alignment
  • 18 in clearance diameter fits compact machine envelopes
  • Rated for 4,000 RPM continuous operation in high-speed drives
  • Withstands 4,000 in-lb peak torque without backlash

Specifications

No published specifications for this item yet.

Questions about this item

What maximum speed does the 1 1/8 in bore rigid coupling handle?

The one-piece carbon steel coupling is rated for 4,000 RPM, so that is the practical speed limit for the 1 1/8 in bore size.

What shaft diameter and keyway width must match the 1 1/8 in bore?

Each bore is 1 1/8 in round with a 1/4 in keyway, so both shafts need that exact diameter and keyway width to fit.

How do you install the one-piece coupling and what step is often missed?

Slide the coupling onto both aligned shafts, then tighten the set screws over the keys; the step often missed is confirming shaft alignment before locking the screws.

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