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E08B21 Metric Triple Roller Chain Sprocket

BRAND: Martin Sprocket | MODEL: E08B21 | CONDITION: NEW | SKU: 256953
E08B21 Metric Triple Roller Chain Sprocket

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Actual product may vary
Typically In Stock: confirm availability
Returnable: see conditions
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Weight: 4.02 lbs UOM: EA

Additional Description

Technical Specifications

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


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.