Roller Chain Sprocket Type B Hub For 80 Chain, 1 Inch Pitch, Single Strand, 65 Teeth, 1.25 Inch Bore, 21.274 Inch Outer Diameter, 5.25 Inch Hub Diameter, Reboreable Sprocket For Shaft Fitment And Beefy Heavy-Duty Attachment
✔️ 65 teeth, OD 21.274 in, hub 5.25 in, bore 1.25 in
This Type B hub sprocket is designed for series 80 chain drives and heavy-duty shaft mounting. It’s ideal for driver or driven roles in industrial conveyors, material handling, and other straight-line power transmission setups where a robust, reboreable attachment is required. P>
Dimensions and compatibility at a glance
| Dimension | Inches | Millimeters |
|---|---|---|
| Teeth | 65 | 65 |
| Pitch | 1.00 in | 25.40 mm |
| Outer diameter | 21.274 in | 540.0 mm |
| Bore | 1.25 in | 31.75 mm |
| Hub diameter | 5.25 in | 133.35 mm |
Details: The Martin type B sprocket uses a hub extension on one side for stability and supports full-depth keyways and standard setscrews to attach to a wide range of shafts. It’s reboreable, making it adaptable to different shaft sizes and mounting needs. The class offers various teeth counts, hub sizes, pitch diameters, and stock bore sizes to fit a broad set of applications. All of this is built from high carbon steel for strength and durability, and the design aligns with ANSI standards to ensure reliable performance in demanding environments.
✅ For use with series 80 chain, 1.00 in pitch; driver or driven sprocket
✅ Type B sprocket offers a stable attachment to the shaft
✅ Shaft diameter range 1.00 in to 1-1/2 in for flexibility
✅ Various teeth, hub sizes, pitch diameters, stock bore sizes
✅ High carbon steel for strength and durability
💡 What is a sprocket hub used for in a chain drive system?
A handy, general explanation helps you understand the basics and why this piece matters.
- Transfers torque from shaft to chain with minimal slip
- Provides secure mounting via keyways and setscrews
- Allows reboreable bore for shaft fitment across different machines
- Meets standard industry specs for broad compatibility