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D12B12 Metric Double Roller Chain Sprocket

$88.25 Each


  • Typically ships in: 1 day
  • Weight: 2.2 lb
  • Free shipping on orders over $20
  • Contiguous U.S. States

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Additional Description

Martin metric double strand solid construction sprockets have proper spacing between chain rows. The sprockets are manufactured from high carbon steel. Martin does not stack “A” plates on multiples, but instead Martin machines teeth after the chain rows are already in place. 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 Width across Teeth/ Rows 30.328 mm
Chain Number 12B-2 Hub Configuration B
Chain Pitch 19.050 mm Hub Outside Diameter 53.010 mm
Number of Chain Rows 2 Length thru Bore 50.013 mm
Number of Teeth 12 Construction Detail Solid
Outside Diameter 85.351 mm Bore Type Stock Bore
Pitch Diameter 73.604 mm Min Bore Size 16.000 mm
Single Strand Tooth Thickness 10.871 mm Max Bore Size 36.000 mm
Storage Dimension Length 3.360 in. Weight 2.31 lbs.
Storage Dimension Width 3.360 in. Individually Packaged No
Storage Dimension Height 1.969 in.


Number Of Teeth 12
Outside Dia 85.351 mm
Material Steel
Pitch Diameter 73.604 mm
Pitch 19.050 mm

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

State of California Proposition 65 Product Warning