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Two-piece aluminum shaft collar with silver finish and steel screws

Ruland Manufacturing

Ruland Manufacturing MSP-20-A 2-Piece Clamp Shaft Collar 20mm Aluminum 2024

SKU CH-WMWH-DTZJQ

Two-piece clamp shaft collar holds a 20 mm round bore with a 40 mm outside diameter and 15 mm width in 2024 aluminum

  • Product typeCouplings, Collars & Adapters
  • Two-piece design allows installation without shaft disassembly
  • 2024 aluminium construction provides high strength-to-weight ratio
  • 20 mm metric bore fits standard shaft sizes
  • 15 mm collar width ensures secure clamping force
  • 4 mm clearance diameter accommodates adjacent components

Shaft Collar for 20 mm Round Bore

The Ruland MSP-20-A is a two-piece clamp collar designed to fit a 20 mm round shaft without a keyway. It is machined from 2024 aluminium alloy and secured with alloy steel screws. Maintenance teams and machine builders use it to locate components or act as a mechanical stop on metric shafts.

Lightweight Aluminium Construction

The collar weighs less than steel equivalents because of its 2024 aluminium body. The two-piece split design allows installation or adjustment without sliding the collar along the full length of the shaft. Alloy steel screws provide the clamping force while the aluminium body keeps rotating mass low.

20 mm Bore with 40 mm Outside Diameter

The 20 mm bore matches the target shaft exactly, while the 40 mm outside diameter and 15 mm width define the space the collar occupies. A clearance diameter of 47.4 mm must be free of obstructions for the clamp screws to operate. Buyers needing a different bore size or a one-piece solid collar will need another part.

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

How do I install the MSP-20-A two-piece clamp collar on a 20 mm shaft without distorting the bore?

Separate the two halves, place them around the shaft, and torque the alloy-steel cap screws evenly in a cross pattern to keep the 20 mm bore round and avoid over-tightening one side.

What maintenance will the aluminum 2024 collar and its steel screws need over time?

Periodically check screw torque and inspect the 2024 aluminum for wear or corrosion; re-torque the alloy-steel screws if vibration loosens them, and replace the collar if the 15 mm width shows deformation.

At what point does the 2024 aluminum yield first under sustained clamping load?

The 2024 aluminum collar yields before the alloy-steel screws, so the 15 mm wide clamp will permanently deform if the applied torque exceeds the aluminum's lower yield strength.

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