Product features
For use with 80-2 chain, 1″ pitch for driver or driven sprocket applications
Double type B sprocket provides a stable and protected attachment to the shaft, and can be modified to match a multitude 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 diameter sizes offer application flexibility
High carbon steel for durability and strength
Product description
The Martin double, also known as a duplex, type B sprocket is ideal for use with the series 80-2 chain with 1” 8112AE0mt5L. SL1500pitch for driver or driven sprocket applications. Varying amounts of teeth and pitch diameters provide application flexibility. Created from high carbon steel, it has high strength and durability. Multiple chain capability permits more power at higher operational speeds with better load capacity.

Type B sprockets have a hub extension on one side to supply stability, and allow for the utilization of full-depth keyways and regular setscrews to attach the sprocket. They are able to also accommodate a wide variety 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”; share bore size from 1 to 1-1/2”; optimum 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 face width (excluding the hub) is 1.710”. The chain row thickness is usually 0.557” nominal. Hubs with a diameter size of 2-9/16” possess a recessed groove for chain clearance. Maximum bores will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at position to keyseat. All Martin sprockets meet or exceed ANSI standards.

A sprocket is a wheel with teeth around the perimeter that meshes with a chain, track, or additional 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 part, based on how they fit with each other. Sprockets with chains just work in straight 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. An example of a power transmission program is a typical bicycle, which has a sprocket and a chain to deliver power from the rider’s legs to the tires producing the bike move.

Martin Sprocket & Gear manufactures power transmitting and conveying items. The business was founded in 1951 and is usually headquartered in Arlington, TX. Martin provides equipment that meet American National Standards Institute (ANSI), National Aerospace Standard (NAS), and Deutsches Institut für Normung (DIN) standards.