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 will be modified to suit a multitude of applications requiring two chains
Shaft diameter choices range from 1 to 1-1/2″ for a variety of applications
Varying amounts of teeth and pitch diameter sizes offer application flexibility
High carbon steel for strength and durability
Product description
The Martin dual, also known as 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 provide application flexibility. Created from high carbon steel, it has high durability and strength. Multiple chain capability permits more power at higher operational speeds with greater load capacity.
Type B sprockets possess a hub extension on one side to supply stability, and invite for the use of full-depth keyways and standard setscrews to attach the sprocket. They are able to also accommodate a wide range of shafts. The double style accepts two chains side-by-side.
The options because of 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”; 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 facial skin width (excluding the 
hub) is 1.710”. The chain row thickness is certainly 0.557” nominal. Hubs with a diameter size of 2-9/16” have a recessed groove for chain clearance. Optimum bores will accommodate regular keyseat and setscrew over keyseat. Slightly bigger bores are possible without keyseat, shallow keyseat, or setscrew at position to keyseat. All Martin sprockets fulfill or exceed ANSI specifications.
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 in turn 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 straight lines. Some common advantages of chain-drive systems include 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, which has a sprocket and a chain to deliver power from the rider’s legs to the tires producing the bike move.
Martin Sprocket & Equipment manufactures power tranny and conveying products. The company was founded in 1951 and can be headquartered in Arlington, TX. Martin provides tools that meet American National Standards Institute (ANSI), Nationwide Aerospace Regular (NAS), and Deutsches Institut für Normung (DIN) standards.
