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Two-piece aluminum shaft collar, silver finish, clamp screws visible

Ruland Manufacturing

Ruland Manufacturing SP-26-A Shaft Collar 2-Piece 1-5/8 in Aluminum

SKU CH-XWNP-QTADD

Two-piece aluminum shaft collar clamps onto a 1-5/8 in bore with alloy-steel screws

  • Product typeCouplings, Collars & Adapters
  • Two-piece design allows easy installation without shaft removal
  • Aluminium 2024 construction provides lightweight strength and corrosion resistance
  • 1-5/8 inch bore fits standard inch-dimension shafts precisely
  • 94 inch clearance diameter avoids interference with adjacent components
  • Alloy steel screws deliver reliable clamping force for secure holding

Precision 2-Piece Aluminium Collar

The Ruland SP-26-A is a two-piece shaft collar machined from 2024 aluminium alloy. Its 1-5/8 inch round bore and 2-5/8 inch outside diameter suit inch-system shafts in power-transmission assemblies. The split design allows installation or adjustment without removing mounted components.

Low-Mass Clamping Performance

Aluminium construction keeps rotating mass low while the alloy-steel screw provides secure clamping force. The 11/16 inch width and 2.94 inch clearance diameter leave space for adjacent hardware. No lubrication or special tools are required for routine mounting.

Sustained Vibration Resistance

Under continuous cyclic loading the two-piece clamp maintains bore concentricity better than single-piece alternatives. The 2024 grade resists deformation where set-screw collars would loosen. Buyers needing keyway engagement or metric bores should select a different model.

How it compares

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

Price $29.99
Cheaper than about 55% of the 693 comparable items (median $35.99).

Specifications

Product
Product typeCouplings, Collars & Adapters

Questions about this item

How do I install the 2-piece collar on a 1-5/8 in shaft, and what step is often missed?

Separate the two halves, place them around the shaft, and tighten the alloy-steel screws evenly so the 11/16 in width clamps uniformly; the missed step is torquing both screws in sequence rather than fully tightening one side first.

What maintenance or replacement will the aluminum 2024 collar need over time?

Inspect the bore and screw threads periodically for wear or galling; if the 1-5/8 in round bore loosens or the alloy-steel screws stretch, replace the collar to maintain holding power.

What limit appears first when the collar runs continuously under load?

The 2024 aluminum yields before the alloy-steel screws, so sustained clamping force and heat can deform the collar width of 11/16 in and reduce grip on the 2.94 in clearance diameter.

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