Roller Chain Sprocket Type B Hub For 35 Chain Single Strand 70 Teeth Three By Eight Pitch One Inch Bore OD About Eight And A Half Inches Two And A Quarter Inch Hub Dia With Two Set Screws And Keyway For Secure Shaft Mount

Type B shaft-mount sprocket for 3/8 in pitch chain, 70 teeth
✔️ 70 teeth, single sprocket, bore 3/8 to 1.25 in, two screws

This Type B bored-to-size sprocket is built for series 35 chain with a 3/8" pitch. It mounts directly to a shaft using a center-keyway and two setscrews for a secure, stable drive. The hub extension on one side adds stability and accommodates a full-depth keyway, making it ideal for durable, maintenance-friendly power transmission in conveyors, agricultural equipment, and factory automation where reliable chain drives are essential.

✅ Series 35 chain compatibility, 3/8" pitch
✅ Type BS sprocket with two setscrews and a keyway for secure shaft mounting
✅ Shaft bore range 3/8" to 1-1/4" for flexible applications
✅ Outside diameter 1.260" to 13.590" with multiple tooth counts
✅ High carbon steel for strength and durability

💡 What is a shaft-mounted sprocket used for in chain drive systems?

In practice, it locks to the shaft with a keyway and two setscrews for secure, aligned power transmission.

- Maintains a fixed gear ratio in straight-line drives - Works with series 35 chain for 3/8 in pitch - Supports bore sizes from 3/8 in to 1-1/4 in with a robust hub