20A80

Metric Roller Chain Sprocket

Item #100966938

25 mm Minimum Bore

779.85 mm Maximum Bore

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Product Details

Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

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

No. of Strands Across	1
Sprocket Style	A
No. of Teeth	80
Pitch Diameter [Min]	808.7 mm
Chain No.	20B, 20B-1
Length Through Bore	18.59 mm
Inch/Metric	Metric
Series	A
Martin No.	20A80
Outside Dia. [Min]	829.35 mm
Material	Steel
Hardened Teeth	Without Hardened Teeth
Hub Projection	N/A
Hub Length Thru	N/A
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Bore Style	Minimum Bore
Pitch Diameter	808.7 mm
Pin Diameter	19.05 mm
Width Across Teeth	18.59 mm
Hub Dia.	N/A
Outside Dia.	829.35 mm
Caliper Diameter	789.66 mm
Bore Range [Max]	779.85 mm
Pitch Root Diameter	789.7 mm
Root Diameter	789.7 mm
Bore Type	Reborable
Chain Pitch	31.75 mm
Bore Range [Min]	25 mm
Single Strand Tooth Thickness	18.59 mm
Weight	147.84 LB
EAN or UPC	697950404776