MARTIN SPROCKET & GEAR 28A57

MARTIN SPROCKET & GEAR 28A57

MARTIN SPROCKET & GEAR

MARTIN SPROCKET & GEAR 28A57

28A57 PART NUMBER

Stock Bore Sprocket - Metric - A Style - 28B / 1-3/4 in, A Hub, 57 Teeth, 40 mm Stock Bore, Steel Material

MARTIN SPROCKET & GEAR - MARTIN SPROCKET & GEAR 28A57

Metric A Plates are flat sprockets with no hub extension on either side.

They can be altered for your application with bolt holes, custom bores, hardened teeth or special hubs welded to them.

Tolerances meet or exceed ISO standards

Manufactured of high carbon steel

Precise machining and processes ensure consistent finish and high quality

Bores are concentric to pitch line, minimizing run out

Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain


SPECIFICATIONS

Chain Number & Pitch 28B / 1-3/4 in
Pitch Diameter 806.9 mm
Chain / Sprocket Type Metric Roller Chain
Maximum Bore Diameter 766 mm
Hub Style A
Tooth Width 29 mm
Number Of Teeth 57
Tooth Thickness 29 mm
Bore Type Reboreable
Chain Roller Diameter 27.94 mm
Bore Diameter 40 mm
Chain Roller Width 30.99 mm
Number Of Strands Across 1
Storage Dimension Height 1.16 mm
Material Steel
Storage Dimension Length 32.85 mm
Storage Dimension Width 32.85 mm
Bore Range 40 to 760.4 mm
Surface Treatment Protective Coating
Length Through Bore 29 mm
Manufacturer Upc Number 697950407074
Hardened Teeth Non-Hardened Teeth
Outside Diameter 834.5 mm
Weight 240.441 lbs
Caliper Diameter 778.6 mm
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RPM GROUP

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