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Two-piece stainless steel shaft collar, 5/16 inch bore, 11/16 inch outer diameter, 9/32 inch wide, satin finish

Ruland Manufacturing

Ruland Manufacturing SP-5-SS 2-Piece Shaft Collar 5/16 in 303 Stainless Steel

SKU CH-3C6F-H86PS

Two-piece stainless steel shaft collar with a 5/16 in bore for secure clamping on inch-sized shafts

  • TypeCouplings, Collars & Adapters
  • 303 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 5/16 inch bore fits standard inch-series shafts
  • 11/16 inch outside diameter provides compact mounting footprint
  • 9/32 inch width saves space in tight assemblies

2-Piece 303 Stainless Steel Shaft Collar

This 2-piece collar is machined from 303 stainless steel for corrosion resistance and strength. The split design clamps around a 5/16 in round bore without marring the shaft. It suits maintenance tasks where a solid ring cannot be slid into position. Builders who need a one-piece collar or a different bore diameter should look elsewhere.

Clamping behaviour under sustained load

The two halves distribute clamping force evenly around the shaft when the stainless steel screws are tightened. This prevents the localized deformation that can occur with single-point set-screw collars during prolonged vibration. The 303 grade retains its mechanical properties in typical industrial environments without relaxation.

Thermal and chemical stability in normal use

303 stainless steel resists oxidation and most common coolants, so the collar remains dimensionally stable across normal shop temperature swings. No lubrication is required at the clamp interface, and the material does not generate particulate debris. California Proposition 65 applies due to substances present in the alloy.

Highlights

  • 303 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 5/16 inch bore fits standard inch-series shafts
  • 11/16 inch outside diameter provides compact mounting footprint
  • 9/32 inch width saves space in tight assemblies

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

Does the 303 stainless steel collar generate heat or noise when running continuously on a shaft?

The collar is a passive mechanical component with no moving parts of its own, so it produces no heat or noise during continuous operation.

What shaft diameter and fastener tools are needed to install this 2-piece clamp collar?

It fits a 5/16 in round shaft and uses stainless steel socket-head cap screws that require a hex key for tightening.

Will the 11/16 in outside diameter and .84 in clearance diameter clear the bearings and spacers already on my 5/16 in shaft?

The collar’s 11/16 in OD and .84 in clearance diameter provide a compact profile that typically fits alongside standard bearings and spacers on a 5/16 in shaft.

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