1 1/4" ID Sprockets | McMaster-Carr

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Roller Chain Trade Number

Number of Teeth

Shaft Diameter

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Pitch

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Material

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System of Measurement

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Chain Standard

Sprocket Type

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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Bushing Type

Teeth Heat Treatment

Maximum Torque

Less than 10,000 in·lbf

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274 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.

Wear-Resistant Sprockets for ANSI Roller Chain

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

Corrosion-Resistant Sprockets for ANSI Roller Chain

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

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 Harsh Environment
Flat-Edge Roller Chain

The teeth on these sprockets are sized to fit Harsh Environment Flat-Edge Roller Chain.

One-Way Sprockets

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

Bushings for Chain and Belt Drives

Quick-Disconnect (QD) Bushings

The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys.

Taper-Lock Bushings

Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws.

Split-Tapered Bushings

The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings.

Quick-Grip Screw-Clamp Bushings

Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed.

Flanged Screw-Clamp Bushings

A mounting flange prevents movement during tightening.

Flush-Mount Screw-Clamp Bushings

Insert these bushings into the bore of your sprocket for flush or recessed mounting.

Self-Adjusting Spring Bushings

A toothed slot lets these bushings contract for insertion into the bore of your sprocket or pulley and then expand for a snug fit.

Quick-Grip Flanged Hydraulic Bushings

Tighten just one set screw to clamp these bushings evenly around your shaft. The screw forces hydraulic fluid in between the double-walled sleeve, expanding the two walls against the shaft and the hub of your sprocket, pulley, or gear for a tight hold.