20A47

Metric Roller Chain Sprocket

Item #100966921

32 mm Minimum Bore

446.05 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

Pitch Diameter [Min]	475.4 mm
Sprocket Style	A
Series	A
No. of Teeth	47
Outside Dia.	495.99 mm
Pitch Diameter	475.4 mm
Single Strand Tooth Thickness	18.59 mm
Caliper Diameter	456.04 mm
Bore Range [Min]	32 mm
Root Diameter	456.3 mm
Outside Dia. [Min]	495.99 mm
Martin No.	20A47
Family Name	No. 20 - 31.750 mm Pitch - Single - A
No. of Strands Across	1
Width Across Teeth	18.59 mm
Bore Range [Max]	446.05 mm
Chain No.	20B, 20B-1
Pin Diameter	19.05 mm
Hub Dia.	N/A
Pitch Root Diameter	456.3 mm
Bore Type	Reborable
Hub Projection	N/A
Bore Style	Minimum Bore
Hub Length Thru	N/A
Material	Steel
Hardened Teeth	Without Hardened Teeth
Length Through Bore	18.59 mm
Chain Pitch	31.75 mm
Inch/Metric	Metric
Weight	50.24 LB
EAN or UPC	697950404431