20A20

Metric Roller Chain Sprocket

Item #100966894

30.02 mm Minimum Bore

172.22 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.	20A20
Bore Range [Max]	172.22 mm
Inch/Metric	Metric
Chain Pitch	31.75 mm
Bore Type	Reborable
Pin Diameter	19.05 mm
Width Across Teeth	18.59 mm
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Hardened Teeth	Without Hardened Teeth
Hub Length Thru	N/A
Material	Steel
Hub Projection	N/A
Sprocket Style	A
Series	A
Hub Dia.	N/A
No. of Strands Across	1
Outside Dia.	223.6 mm
Pitch Root Diameter	183.9 mm
Single Strand Tooth Thickness	18.59 mm
Chain No.	20B, 20B-1
Caliper Diameter	183.91 mm
No. of Teeth	20
Root Diameter	183.9 mm
Outside Dia. [Min]	223.6 mm
Bore Style	Minimum Bore
Pitch Diameter	203 mm
Length Through Bore	18.59 mm
Bore Range [Min]	30.02 mm
Pitch Diameter [Min]	203 mm
Weight	10.09 LB
EAN or UPC	697950403892