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Stainless steel shaft collar, one-piece clamp style, 303 grade, 3/8 inch bore, 7/8 inch OD

Ruland Manufacturing

Ruland Manufacturing CL-6-SS 3/8 in 303 Stainless Steel Shaft Collar

SKU CH-NS5B-NSVFX

A one-piece clamp collar in 303 stainless steel fits a 3/8 in bore with a 1.03 in clearance diameter

  • TypeCouplings, Collars & Adapters
  • Secure clamping from 1-piece stainless steel construction
  • Corrosion resistance with 303 stainless steel material
  • Precise 3/8 in bore fits standard shafts
  • Durable stainless steel screw holds position reliably
  • Clear 1.03 in diameter allows easy installation

Shaft Collar for 3/8 in Round Bore

This one-piece clamp collar fits a 3/8 in round shaft and is machined from 303 stainless steel. It suits maintenance, automation and light-duty power-transmission builds where corrosion resistance matters. The 1.03 in clearance diameter keeps the profile compact inside guards or brackets. Buyers needing a keyway or a two-piece split design should look elsewhere.

Installation Notes and Common Issues

The collar uses a single stainless-steel socket screw to clamp the bore; tightening to the maker's torque spec prevents marring the shaft. Over-tightening can distort the 11/32 in wide band and reduce holding power. Ensure the screw threads are clean and the shaft surface is free of burrs before assembly. California Proposition 65 applies to this item.

Behaviour Under Sustained Load

The 303 grade resists galling during repeated clamp-release cycles better than lower alloys. Under continuous vibration the single screw maintains preload if the recommended torque is observed. Extended exposure to moisture or mild chemicals will not degrade the stainless body. The collar is not rated for high-speed dynamic balancing.

Highlights

  • Secure clamping from 1-piece stainless steel construction
  • Corrosion resistance with 303 stainless steel material
  • Precise 3/8 in bore fits standard shafts
  • Durable stainless steel screw holds position reliably
  • Clear 1.03 in diameter allows easy installation

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

How can I confirm the 1-piece clamp is seated correctly on a 3/8 in shaft after tightening the stainless screw?

The collar outside diameter is 7/8 in and clearance diameter is 1.03 in; when the screw is torqued the collar should sit flush with no visible gap and the shaft should not rotate inside the bore.

Does the package include any additional hardware such as set screws or shims, or is it only the 1-piece collar?

The supplier title specifies 1Pc and the specifications list a 1-piece construction with a stainless steel screw; no extra fasteners or shims are mentioned.

When should I choose the 303 stainless version instead of another grade for a 3/8 in bore collar?

Grade 303 stainless steel provides good corrosion resistance and machinability for general-purpose clamping on a 3/8 in round shaft in non-marine environments.

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