Transmissions
Chain Sprockets
Pilot Bore Sprockets
1.3/4inch Pitch (28B1) Simplex Chain Sprocket
Quick Code: BB-20482
28B1-25 Pilot Bore Sprocket
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Product Specification
Boss Dia
160mm
Number of Teeth
25
Outside Dia
373mm
Overall Length
75mm
Pilot Bore Size
30mm
Pitch
1.3/4inch
Brand
Medway
Quick Order Code
BB-20482
Product Description
28B1-25 Simplex Chain Sprocket
This 28B1-25 pilot bore sprocket is a British standard roller chain sprocket designed for reliable power transmission in industrial machinery. With 25 teeth and a 1.3/4 inch pitch, it offers an ideal balance for medium-speed applications requiring consistent torque delivery.
Key Specifications:
- 28B1 British standard roller chain sprocket
- 1.3/4 inch pitch × 25 teeth
- Outside diameter: 373mm
- Boss diameter: 160mm
- Pilot bore size: 30mm
- Overall length: 75mm
- Manufactured by Medway to exacting standards
Features & Benefits:
- Pilot Bore Design: Allows for precise machining to your exact shaft requirements, making it ideal for custom installations and replacement applications
- Versatile Applications: Suitable for conveyor systems, manufacturing equipment, heavy machinery, and other demanding industrial applications
- Quality Assured: Built to British standards with reliable performance in high-demand environments
- Quick Availability: Stocked in our UK-based warehouse ready for immediate dispatch
Whether you require a single replacement sprocket or multiple units for a new installation, our technical team is available to help you select the correct specification for your application.



