Martin 40BS261 Bored-to-Size Sprocket 1 in Diameter Bore #40 Chain

Product Description

Martin 40BS261 is a bored-to-size roller chain sprocket designed for use in various power transmission applications. This type BS sprocket features a one inch diameter bore and is built for #40 chain compatibility. The overall diameter is 4.418 inches and it has 26 teeth, making it suitable for diverse machinery where precise motion transfer is crucial.

• Bored to size with keyways and setscrews included
• Manufactured from steel for strength and durability
• Designed for stock finished bores and non-hardened teeth

Product Highlights

This product ensures minimal run-out due to its precise machining.

Product Information

Standard Information

• Brand: Martin Sprocket & Gear
• Manufacturer Part Number: 40BS261

Technical Specifications

• Bore Diameter: 1 in
• Chain Size: #40
• Outside Diameter: 4.418 in
• Number of Teeth: 26
• Pitch: 1/2 in
• Pitch Diameter: 4.148 in
• Hub Diameter: 3-1/4 in
• Length Through Bore: 1 in
• Material: Steel
• Keyway Size: 1/4 x 1/8 in
• Screw Size: 5/16-18 x 5/16 in
• Includes: (2) Setscrews
• Standards/Approvals: PROP65 warning
• Country of Origin: US