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Two-piece stainless steel shaft collar, 1-7/8 inch bore, clamp style

Ruland Manufacturing

Ruland Manufacturing SP-30-SS 2-Piece Shaft Collar 1-7/8 in 303 SS

SKU CH-9B5A-WC9S8

A two-piece stainless-steel clamp collar that fits a 1-7/8 in round bore and provides a 3.16 in clearance diameter

  • TypeCouplings, Collars & Adapters
  • 303 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 1-7/8 inch round bore fits standard inch-dimension shafts
  • 11/16 inch collar width provides secure axial holding
  • 16 inch clearance diameter clears adjacent components

Precision 2-Piece Shaft Collar for 1-7/8 Inch Shafts

This 303 stainless steel collar clamps around a 1-7/8 inch round bore using a two-piece split design. It suits maintenance tasks where the shaft cannot be removed and the collar must slide into position without disassembly. The 303 grade provides general corrosion resistance for industrial and marine environments.

Two-Piece Clamping Under Continuous Load

The split construction distributes clamping force evenly around the shaft, reducing local deformation during sustained torque or vibration. Stainless steel screws maintain preload without galling, and the 11/16 inch width offers a broad contact surface for stable grip. The 3.16 inch clearance diameter keeps the profile compact inside guards or brackets.

Verify Shaft Diameter and Space Before Ordering

Confirm the shaft measures exactly 1-7/8 inches; the collar is not adjustable and will not fit undersized or oversized bars. Ensure at least 3.16 inches of radial clearance is available around the shaft for the collar outer diameter. Buyers needing a keyway or threaded bore should select a different model.

Highlights

  • 303 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 1-7/8 inch round bore fits standard inch-dimension shafts
  • 11/16 inch collar width provides secure axial holding
  • 16 inch clearance diameter clears adjacent components

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

How much heat does the 303 stainless steel collar generate when clamped on a 1-7/8 in shaft running continuously?

The collar is a passive mechanical clamp; it produces no heat of its own and adds no thermal load to the shaft during all-day operation.

What tool is required to secure the two-piece collar onto the shaft?

A hex key matching the stainless steel socket-head cap screws supplied with the collar is needed to clamp the two halves together.

Will the 2-7/8 in outside diameter and 11/16 in width clear the bearing housing on an older lineshaft?

The 3.16 in clearance diameter and 11/16 in width determine the envelope; compare those dimensions to your housing bore and adjacent components before fitting.

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