20A8

Metric Roller Chain Sprocket

Item #100966882

25.02 mm Minimum Bore

48.41 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

Martin No.	20A8
Pin Diameter	19.05 mm
Bore Range [Max]	48.41 mm
Pitch Diameter	83 mm
Pitch Diameter [Min]	83 mm
Chain Pitch	31.75 mm
Hub Dia.	N/A
No. of Teeth	8
Hub Length Thru	N/A
Hardened Teeth	Without Hardened Teeth
Pitch Root Diameter	63.9 mm
Width Across Teeth	18.59 mm
No. of Strands Across	1
Length Through Bore	18.59 mm
Bore Style	Minimum Bore
Root Diameter	63.9 mm
Hub Projection	N/A
Bore Range [Min]	25.02 mm
Chain No.	20B, 20B-1
Material	Steel
Inch/Metric	Metric
Bore Type	Reborable
Series	A
Outside Dia. [Min]	103.6 mm
Caliper Diameter	63.92 mm
Sprocket Style	A
Single Strand Tooth Thickness	18.59 mm
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Outside Dia.	103.6 mm
Weight	1.15 LB
EAN or UPC	697950403656