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D28B12 Metric Double Roller Chain Sprocket

BRAND: Martin Sprocket | MODEL: D28B12 | CONDITION: NEW | SKU: 256409
D28B12 Metric Double Roller Chain Sprocket

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Actual product may vary
Typically In Stock: confirm availability
Returnable: see conditions
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Weight: 28.70 lbs UOM: EA

Additional Description

Technical Specifications

Pitch 44.450 mm
Number Of Teeth 12
Outside Dia 199.364 mm
Material Steel
Pitch Diameter 171.742 mm


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 88.392 mm
Chain Number 28B-2 Hub Configuration B
Chain Pitch 44.450 mm Hub Outside Diameter 124.993 mm
Number of Chain Rows 2 Length thru Bore 119.990 mm
Number of Teeth 12 Construction Detail Solid
Outside Diameter 199.364 mm Bore Type Stock Bore
Pitch Diameter 171.742 mm Min Bore Size 40.000 mm
Single Strand Tooth Thickness 28.829 mm Max Bore Size 88.000 mm
Storage Dimension Length 7.849 in. Weight 30.95 lbs.
Storage Dimension Width 7.849 in. Individually Packaged No
Storage Dimension Height 4.724 in.