Single sprocket with hub, pitch 1/2", 42 teeth

MR Piñón simple 1/2" Z42 belongs to sprockets and gears, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for Piñón simple 1/2" Z42 and any equivalents.

This simplex sprocket with hub is identified by the code 1/2" Z42, which indicates a 1/2" chain pitch and 42 teeth. The single row of teeth and the protruding hub make it suitable for mounting on a shaft, where it can be secured with a set screw or key. It is manufactured in SAE 1045 steel, a material that provides wear resistance for power transmission duties. MR Industrial Accessories supplies this sprocket to maintenance and purchasing teams across the United States and Latin America.

The sprocket meshes with 1/2" pitch chains and is commonly found in agricultural machinery, chain conveyors, bucket elevators, packaging lines, and material handling equipment. It also appears in low and medium speed drive systems that call for a specific transmission ratio. Because it is made of SAE 1045 steel, it handles moderate loads and friction wear. Typical mounting points include gearmotor output shafts and intermediate shafts on machine tools.

When selecting this part, confirm the chain pitch (1/2"), the number of teeth (42), and the shaft diameter where it will be installed. The hub must match the shaft diameter, and the fixing method—set screw or key—should suit the load. Check alignment between sprocket and chain to prevent premature wear. Proper lubrication and correct chain tension are key to service life. If a different ratio is needed, a sprocket with another tooth count can be evaluated.

To find an equivalent, send the exact code of the sprocket being replaced or provide the shaft and chain measurements. With that information, the team can identify the part or suggest an alternative from the product line. Advice on steel type and heat treatment for the application is also available. Inquiries about variants in tooth count or hub diameter are welcome.

For a quote on this simplex sprocket 1/2" Z42 or any other transmission part, send the part number via WhatsApp or email. MR Industrial Accessories supplies bearings, mounted units, power transmission components, seals, and maintenance tools, and can help match the right solution to your machine.