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E16B21 Metric Triple Roller Chain Sprocket

$369.59 Each


  • Typically ships in: 1 day
  • Weight: 19.7 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 79.578 mm
Chain Number 16B-3 Hub Configuration B
Chain Pitch 25.400 mm Hub Outside Diameter 129.997 mm
Number of Chain Rows 3 Length thru Bore 100.000 mm
Number of Teeth 21 Construction Detail Solid
Outside Diameter 186.296 mm Bore Type Stock Bore
Pitch Diameter 170.421 mm Min Bore Size 30.000 mm
Single Strand Tooth Thickness 15.824 mm Max Bore Size 91.000 mm
Storage Dimension Length 7.335 in. Weight 29.62 lbs.
Storage Dimension Width 7.335 in. Individually Packaged No
Storage Dimension Height 3.937 in.


Number Of Teeth 21
Outside Dia 186.296 mm
Material Steel
Pitch Diameter 170.421 mm
Pitch 25.400 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