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Two-piece aluminum shaft collar, matte silver finish, 2024 alloy, clamp style with alloy steel screws

Ruland Manufacturing

Ruland Manufacturing SP-12-A 2-Piece Clamp Shaft Collar 3/4 in 2024 Aluminum

SKU CH-RBDW-FVKS0

A two-piece clamp shaft collar made from 2024 aluminium secures a 3/4 in round bore with an alloy-steel screw

  • Product typeCouplings, Collars & Adapters
  • Two-piece design allows installation without shaft disassembly
  • 2024 aluminium construction provides high strength-to-weight ratio
  • 3/4 inch bore fits standard imperial shafting
  • 81 inch clearance diameter clears adjacent components
  • Alloy steel screws deliver reliable clamping force

2024 Aluminium 2-Piece Clamp Collar

The Ruland Manufacturing SP-12-A is a two-piece shaft collar machined from 2024 aluminium alloy. It uses a clamp-style design that tightens around a shaft without marring the surface. The collar suits power-transmission assemblies where frequent adjustment or removal is required.

Inch-Series Shafts Needing Quick Access

Maintenance teams and machine builders working with 3/4 in round shafts will find the split construction allows installation without sliding components off the shaft end. Applications that demand a keyway, a threaded bore or a one-piece solid collar should select a different style.

1 1/2 in OD With 1.81 in Clearance

The collar provides a 1 1/2 in outside diameter and a 1.81 in clearance diameter, giving ample room for adjacent brackets or sensors. The 1/2 in width and alloy-steel screws deliver firm holding power, while the aluminium body keeps rotating mass low for high-speed shafts.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 87% of the 693 comparable items (median $35.99).

Specifications

Product
Product typeCouplings, Collars & Adapters

Questions about this item

What shaft diameter must I already have for the 3/4 in bore to fit?

The collar accepts a round shaft measuring exactly 3/4 in, so the shaft you own must match that diameter.

Will the 1.81 in clearance diameter clear the flanges on my existing 1 1/2 in OD components?

Yes, the 1.81 in clearance diameter provides extra radial space beyond the 1 1/2 in outside diameter, allowing it to pass over standard flanges.

How can I confirm the two-piece clamp is seated correctly after installation?

Tighten the alloy-steel screws until both halves meet evenly around the 2024 aluminum body, then verify the collar does not rotate or slide on the shaft.

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