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

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.