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Best Clamp-On Shaft Collars (2026 Guide)

We selected collars with the highest verified average ratings and review volume across materials, bore sizes, and clamp styles, prioritizing construction quality and common industrial use cases

Top Picks

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    1.00" Bore Two-Piece Shaft Collar (4 Pack) - 303 Stainless

    1.00" Bore Two-Piece Shaft Collar (4 Pack) - 303 Stainless

    Coastal Machine Works • ★ 3.8/5 • Budget

    Two-piece stainless steel shaft collars with 1.00 in bore and 1.75 in outside diameter. Includes 4 collars and screws; deburred edges and bore engraving for easy identification. Made in the USA by Coastal Machine Works

    • two-piece installation
    • stainless steel corrosion resistance
    • includes screws and deburred bore engraving
    Check current price on Amazon →
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Buying Guide

Clamp style: two-piece vs double-split

Two-piece collars ease installation on assembled shafts and offer uniform clamping; double-split collars can provide higher concentricity and stronger radial grip for demanding applications

Material choice: stainless vs carbon steel

Stainless (303/304) resists corrosion for wet or food-grade environments, while carbon steel with finishes like black oxide gives higher hardness and wear resistance where corrosion is less of a concern

Bore size and fit

Match the collar bore to your shaft diameter—options here range from around 1.00 in up to 3 in—ensure tight tolerance to minimize slippage and shaft damage

Fastener quality and torque

Look for collars with machined clamping surfaces and high-quality socket-head fasteners; proper torque specs prevent uneven clamping and deformation

Set-screw vs clamp-only designs

Clamp-only split collars avoid shaft marring and are preferable for precise positioning, while set-screw variants add axial retention when used on softer shafts or where additional locking is needed