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Product Specification
Boss Dia
90mm
Number of Teeth
39
Outside Dia
162.7mm
Overall Length
35mm
Pilot Bore Size
16mm
Pitch
1/2inch
Reference
4SR39
Brand
Medway
Quick Order Code
BB-20238
Product Description

08B1-39 Simplex Chain Sprocket

The 4SR39 is a precision-engineered pilot bore sprocket designed for reliable power transmission in a wide range of industrial and mechanical applications. Built to British standard specifications, this sprocket delivers consistent performance in chain drive systems.

  • 08B1 British standard roller chain sprocket
  • 1/2 inch pitch x 39 teeth
  • Boss diameter: 90mm
  • Outside diameter: 162.7mm
  • Pilot bore size: 16mm
  • Overall length: 35mm
  • Manufactured by Medway to high quality standards

Applications:

This 39-tooth sprocket is ideal for moderate-speed drive systems where balanced torque and speed characteristics are required. The larger tooth count makes it particularly suitable for applications requiring higher speed ratios. Commonly used in:

  • Industrial machinery and equipment
  • Conveyor systems
  • Agricultural applications
  • General mechanical power transmission
  • Drive systems requiring precise speed control

The 16mm pilot bore accommodates larger shaft sizes, while the substantial 90mm boss diameter ensures robust compatibility with a variety of mounting configurations. The 162.7mm outside diameter and 35mm length provide optimal chain engagement and superior durability for demanding operational environments.


  • 08B1 Roller Chain To Suit