20A20

Metric Roller Chain Sprocket

Item #100966894

30.02 mm Minimum Bore

172.22 mm Maximum Bore

+ Show More

Auto Replenish

each One-time purchase

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

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