roller chain sprocket

Product features
For use with 80-2 chain, 1″ pitch for driver or driven sprocket applications
Dual type B sprocket offers a stable and secure attachment to the shaft, and may be modified to match a wide variety of applications requiring two chains
Shaft diameter choices range from 1 to 1-1/2″ for a number of applications
Varying numbers of teeth and pitch diameter sizes offer application flexibility
High carbon steel for durability and strength
Product description
The Martin dual, also called a duplex, type B sprocket is suitable for use with the series 80-2 chain with 1” pitch for driver or driven sprocket applications. Varying numbers of teeth and pitch diameters offer application flexibility. Made from high carbon metal, it has high durability and strength. Multiple chain capability permits more power at higher operational speeds with higher load capacity.

Type B sprockets have a hub extension using one side to provide stability, and allow for the use of full-depth keyways and standard setscrews to add the sprocket. They can also accommodate an array of shafts. The double style accepts two chains side-by-side.

The options for this class of sprocket are: number of teeth from 10 to 95; outside diameter from 3.680 to 30.830”; stock bore size from 1 to 1-1/2”; maximum bore size from 1-1/2 to 4”; hub diameter from 2-9/16 to 6”; length through bore from 2-3/4 to 4-1/4”; and approximate weight from 3.6 to 165 lb. The face width (not including the hub) is 1.710”. The chain row thickness is definitely 0.557” nominal. Hubs with a diameter size of 2-9/16” have a recessed groove for chain clearance. Maximum bores will accommodate regular keyseat and setscrew over keyseat. Slightly bigger bores are possible with no keyseat, shallow keyseat, or setscrew at position to keyseat. All Martin sprockets meet up with or exceed ANSI standards.

A sprocket is a wheel with the teeth around the perimeter that meshes with a chain, track, or other perforated or indented materials. Unlike gears that mesh with another equipment, sprockets mesh with a chain, which then interacts with another sprocket. Gears can be used to transmit power around a corner, based on how they fit with each other. Sprockets with chains only work in directly lines. Some common benefits of chain-drive systems consist of minimal slippage, a set ratio between rotating shafts, and versatility with many different chain attachments and sprocket materials selections. A good example of a power transmission system is a standard bicycle, that includes a sprocket and a chain to provide power from the rider’s legs to the tires making the bike move.

Martin Sprocket & Gear manufactures power tranny and conveying items. The company was founded in 1951 and can be headquartered in Arlington, TX. Martin provides tools that meet American Nationwide Standards Institute (ANSI), Nationwide Aerospace Standard (NAS), and Deutsches Institut für Normung (DIN) standards.