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E40B12H Triple Roller Chain Sprocket

$54.72 Each


  • Typically ships in: 1 day
  • Weight: 1.1 lb
  • Free shipping on orders over $20
  • Contiguous U.S. States

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Additional Description

Martin 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 Hub Configuration B
Chain Number 40 Hub Outside Diameter 1.563 in.
Chain Pitch 0.500 in. Length thru Bore 2.125 in.
Number of Chain Rows 3 Hub Recessed For Chain Clearance Yes
Number of Teeth 12 Construction Detail Solid With Recess Groove
Outside Diameter 2.166 in. Bore Type Stock Bore
Pitch Diameter 1.932 in. Min Bore Size 0.500 in.
Single Strand Tooth Thickness 0.275 in. Max Bore Size 0.938 in.
Hardened Teeth Yes
Storage Dimension Length 2.625 in. Weight 1.20 lbs.
Storage Dimension Width 2.625 in. Individually Packaged Yes
Storage Dimension Height 2.125 in.


Number Of Teeth 12
Outside Dia 2.166"
Material Steel
Pitch 0.500 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

State of California Proposition 65 Product Warning