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25B21 PITCH: #25 TEETH: 21 Bore: Minimum Plain Bore

$10.10 Each


  • Typically ships in: 1 day
  • Weight: 0.3 lb
  • Free shipping on orders over $20

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Additional Description

B Style sprockets are flat sprockets with a hub extension on one side. These plain bore sprockets can easily be bored to a metric or standard size to fit your application. Keyways, set screws and harden teeth are quick alterations that can be made.
Material Steel Hub Configuration B
Chain Number 25 Hub Outside Diameter 1.375 in.
Chain Pitch 0.250 in. Length thru Bore 0.625 in.
Number of Chain Rows 1 Hub Recessed For Chain Clearance No
Number of Teeth 21 Construction Detail Solid
Outside Diameter 1.809 in. Bore Type Stock Bore
Pitch Diameter 1.677 in. Min Bore Size 0.250 in.
Single Strand Tooth Thickness 0.110 in. Max Bore Size 0.875 in.
Hardened Teeth No
Storage Dimension Length 1.938 in. Weight 0.27 lbs.
Storage Dimension Width 1.938 in. Individually Packaged Yes
Storage Dimension Height 0.813 in.


Number Of Teeth 21
Outside Dia 1.809"
Material Steel
Pitch 0.250 in.

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may apply to any return with this manufacturer.

For more information please consult


Product's availability

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