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E08B21 Metric Triple Roller Chain Sprocket

$124.77 Each


  • Typically ships in: 1 day
  • Weight: 4.0 lb
  • Free shipping on orders over $20
  • Contiguous U.S. States

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Additional Description

Martin metric triple 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 35.052 mm
Chain Number 08B-3 Hub Configuration B
Chain Pitch 12.700 mm Hub Outside Diameter 70.002 mm
Number of Chain Rows 3 Length thru Bore 54.991 mm
Number of Teeth 21 Construction Detail Solid
Outside Diameter 92.577 mm Bore Type Stock Bore
Pitch Diameter 85.211 mm Min Bore Size 12.000 mm
Single Strand Tooth Thickness 7.214 mm Max Bore Size 47.000 mm
Storage Dimension Length 3.645 in. Weight 3.87 lbs.
Storage Dimension Width 3.645 in. Individually Packaged No
Storage Dimension Height 2.165 in.


Number Of Teeth 21
Outside Dia 92.577 mm
Material Steel
Pitch Diameter 85.211 mm
Pitch 12.700 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