3/8" Gears | McMaster-Carr

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583 Products

About Roller Chain and Sprockets

Sprockets for ANSI Roller Chain

Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.

Machinable-Bore Sprockets for ANSI Roller Chain

For a custom fit on your shaft, these sprockets can be machined to your exact specifications.

Corrosion-Resistant Sprockets for ANSI Roller Chain

Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.

Machinable-Bore Corrosion-Resistant
Sprockets for ANSI Roller Chain

For a custom fit on your shaft, these sprockets can be machined to your exact specifications.

Lightweight Sprockets for ANSI Roller Chain

Made of nylon, these sprockets are lightweight, quiet, and corrosion resistant.

Wear-Resistant Sprockets for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life.

Flat Sprockets for ANSI Roller Chain

Also known as A-plate and weld sprockets, these have a slim profile that fits in narrow spaces and are often welded directly to a shaft.

Sprockets for Double-Strand ANSI Roller Chain

These sprockets have two rows of teeth for use with double-strand ANSI roller chain.

Sprockets for Triple-Strand ANSI Roller Chain

Three rows of teeth make these sprockets compatible with triple-strand ANSI roller chain.

Sprockets for Silent Drive Chain

Machine the center of these sprockets for a custom fit that matches your shaft. The teeth are sized to fit into silent-drive chain.

One-Way Sprockets

Transfer power in one direction with these sprockets, which spin freely in the opposite direction.

Idler Sprockets

Idler Sprockets for ANSI Roller Chain

These sprockets are made of steel.

Wear-Resistant Idler Sprockets
for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life.

Wear-Resistant Wide-Hub Idler
Sprockets for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life.

Wide-Hub Idler Sprockets for ANSI Roller Chain

A wide hub provides these sprockets with stability under heavy loads.

Idler Sprockets for Double-Strand ANSI Roller Chain

These idler sprockets have two rows of teeth for use with double-strand ANSI roller chain.

Bushing-Bore Sprockets for ANSI Roller Chain

Quick-Disconnect (QD) Bushing-Bore
Sprockets for ANSI Roller Chain

Use these sprockets with compatible QD bushings.

Taper-Lock Bushing-Bore
Sprockets for ANSI Roller Chain

Get the same sizing versatility as quick-disconnect sprockets while using less space.

Split-Tapered Bushing-Bore
Sprockets for ANSI Roller Chain

Since these sprockets grip bushings more tightly than taper-lock sprockets, they’re often used in high-torque applications.

Timing Belts and Pulleys

L Series Corrosion-Resistant Timing Belt Pulleys

Pulleys are anodized aluminum, which is more corrosion resistant than steel.

L Series Timing Belt Pulleys

These L series (light) pulleys and have trapezoidal teeth.

L Series Quick-Disconnect Timing Belt Pulleys

Carry heavy loads without slippage—pulleys mount with a bushing for a more secure grip on the shaft than set screws.

Timing Belt Idler Pulleys

Add these free-spinning pulleys to your timing belt setup to minimize vibration and keep belts from wearing out.

About Roller Chain and Sprockets

Sprockets

Sprockets for ANSI Roller Chain

Machinable-Bore Sprockets for ANSI Roller Chain

Corrosion-Resistant Sprockets for ANSI Roller Chain

Machinable-Bore Corrosion-ResistantSprockets for ANSI Roller Chain

Lightweight Sprockets for ANSI Roller Chain

Wear-Resistant Sprockets for ANSI Roller Chain

Flat Sprockets for ANSI Roller Chain

Sprockets for Double-Strand ANSI Roller Chain

Sprockets for Triple-Strand ANSI Roller Chain

Sprockets for Silent Drive Chain

One-Way Sprockets

Idler Sprockets

Idler Sprockets for ANSI Roller Chain

Wear-Resistant Idler Sprocketsfor ANSI Roller Chain

Wear-Resistant Wide-Hub IdlerSprockets for ANSI Roller Chain

Wide-Hub Idler Sprockets for ANSI Roller Chain

Idler Sprockets for Double-Strand ANSI Roller Chain

Bushing-Bore Sprockets for ANSI Roller Chain

Quick-Disconnect (QD) Bushing-BoreSprockets for ANSI Roller Chain

Taper-Lock Bushing-BoreSprockets for ANSI Roller Chain

Split-Tapered Bushing-BoreSprockets for ANSI Roller Chain

Timing Belts and Pulleys

L Series Corrosion-Resistant Timing Belt Pulleys

L Series Timing Belt Pulleys

L Series Quick-Disconnect Timing Belt Pulleys

Timing Belt Idler Pulleys

Machinable-Bore Corrosion-Resistant
Sprockets for ANSI Roller Chain

Wear-Resistant Idler Sprockets
for ANSI Roller Chain

Wear-Resistant Wide-Hub Idler
Sprockets for ANSI Roller Chain

Quick-Disconnect (QD) Bushing-Bore
Sprockets for ANSI Roller Chain

Taper-Lock Bushing-Bore
Sprockets for ANSI Roller Chain

Split-Tapered Bushing-Bore
Sprockets for ANSI Roller Chain