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One-piece steel clamp collar with black oxide finish

Ruland Manufacturing

Ruland Manufacturing CL-28-F 1-Piece Clamp Collar 1-3/4 In Steel

SKU CH-CF2K-ZDKEG

A one-piece carbon-steel clamp collar with 1-3/4 in bore and 2-3/4 in outside diameter secures shafts in power-transmission assemblies

  • TypeCouplings, Collars & Adapters
  • Secure grip on 1-3/4 inch shafts
  • One-piece clamp design simplifies installation
  • 1215 carbon steel resists wear
  • Black oxide finish adds corrosion protection
  • Alloy steel screw ensures strong clamping force

Precision shaft collar for inch bores

The Ruland Manufacturing CL-28-F is a one-piece clamp collar designed for 1 3/4 inch round shafts. It provides a secure, mar-free grip in power-transmission assemblies where set-screw collars would damage the shaft. Maintenance teams and OEM builders use it to locate bearings, sprockets or limit switches on linear motion systems.

Black oxide carbon steel with alloy steel screw

The collar body is machined from 1215 lead-free carbon steel with a black oxide finish for corrosion resistance. Its one-piece construction means the clamp wraps fully around the shaft and tightens with a single alloy steel socket screw. The 11/16 inch width and 2 3/4 inch outside diameter keep the profile compact inside machine frames.

Replaces set-screw and two-piece collars

Switching from a set-screw collar eliminates shaft scoring and fretting that cause premature bearing wear. The one-piece design also removes the alignment step required with split collars, cutting installation time on production lines. It is not suited for applications needing a keyway, threaded bore or a quick-release lever.

Highlights

  • Secure grip on 1-3/4 inch shafts
  • One-piece clamp design simplifies installation
  • 1215 carbon steel resists wear
  • Black oxide finish adds corrosion protection
  • Alloy steel screw ensures strong clamping force

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

What inch standard does the CL-28-F clamp collar use for its bore?

The collar is machined to an inch-system round bore of 1 3/4 in for direct shaft fit.

What shaft diameter and clearance does this 1-piece collar need to fit?

It requires a 1 3/4 in shaft and provides a 3.05 in clearance diameter with a 2 3/4 in outside diameter.

How is the single alloy-steel screw installed to clamp the collar?

Tighten the socket-head cap screw evenly until the split closes uniformly around the shaft without over-torquing.

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