#40 Chain Sprocket with 21 Tooth and 1 7/16" Finished Bore, Model #40BS21-1 7/16

Sprocket #40 Chain – 21 Tooth, 1 7/16 Finished Bore with Keyway & Set Screws

Looking for a reliable #40 chain sprocket? This 21-tooth, 1 7/16 finished-bore sprocket is built for dependable power transmission and comes ready to install with a precision keyway and two set screws for secure mounting. It’s a durable choice for conveyors, industrial machinery, agricultural equipment, and general power-transmission systems.

Product Specifications

• Bore Size: 1 7/16 finished bore
• Chain Size: #40 roller chain
• Number of Teeth: 21
• Bore Style: BS
• Keyway: 3/8 x 3/16
• Mounting: Includes 2 set screws