Product features
For use with 80-2 chain, 1″ pitch for driver or driven sprocket applications
Double type B sprocket offers a stable and secure attachment to the shaft, and will be modified to match a wide variety of applications requiring two chains
Shaft diameter choices range between 1 to 1-1/2″ for a number of applications
Varying amounts of teeth and pitch size sizes offer application flexibility
High carbon steel for strength and durability
Product description
The Martin dual, also referred to as a duplex, type B sprocket is ideal for use with the series 80-2 chain with 1” pitch for driver or driven sprocket applications. Varying amounts of tooth and pitch diameters offer application flexibility. Created from high carbon metal, it has high durability and strength. Multiple chain capability permits more power at higher operational speeds with greater load capacity.
Type B sprockets have a hub extension using one side to supply stability, and invite for the use of full-depth keyways and regular setscrews to add the sprocket. They can also accommodate an array of shafts. The double design 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”; duration through bore from 2-3/4 to 4-1/4”; and approximate weight from 3.6 to 165 lb. The facial skin width (excluding the 
hub) is 1.710”. The chain row thickness can be 0.557” nominal. Hubs with a diameter size of 2-9/16” have a recessed groove for chain clearance. Maximum bores will accommodate standard keyseat and setscrew over keyseat. Slightly bigger bores are possible without keyseat, shallow keyseat, or setscrew at position to keyseat. All Martin sprockets meet or exceed ANSI specifications.
A sprocket is a wheel with the teeth around the perimeter that meshes with a chain, track, or various other perforated or indented materials. Unlike gears that mesh with another equipment, sprockets mesh with a chain, which in turn interacts with another sprocket. Gears can be used to transmit power around a corner, based on how they can fit jointly. Sprockets with chains only work in directly lines. Some common benefits of chain-drive systems consist of minimal slippage, a fixed ratio between rotating shafts, and versatility with many different chain attachments and sprocket materials selections. An example of a power transmission program is a typical bicycle, that includes a sprocket and a chain to deliver power from the rider’s legs to the tires making the bike move.
Martin Sprocket & Equipment manufactures power transmission and conveying products. The company was founded in 1951 and is usually headquartered in Arlington, TX. Martin provides equipment that meet American Nationwide Standards Institute (ANSI), National Aerospace Standard (NAS), and Deutsches chain sprocket Institut für Normung (DIN) standards.