08A21

Metric Roller Chain Sprocket

Item #100966143

12 mm Minimum 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

Caliper Diameter	10.01 mm
Pitch Diameter [Min]	85.2 mm
Series	A
Hub Length Thru	N/A
Chain No.	08B, 08B-1
Chain Pitch	12.7 mm
Bore Range [Max]	N/A
Root Diameter	76.7 mm
Pitch Root Diameter	76.7 mm
Bore Type	Reborable
Hardened Teeth	Without Hardened Teeth
Pin Diameter	8.509 mm
No. of Strands Across	1
Hub Dia.	N/A
Material	Steel
Length Through Bore	5.31 mm
Single Strand Tooth Thickness	7.37 mm
Sprocket Style	A
Bore Range [Min]	12 mm
Pitch Diameter	85.2 mm
Family Name	No. 08 - 12.700 mm Pitch - Single - A
Outside Dia.	92.58 mm
Width Across Teeth	5.31 mm
Martin No.	08A21
Outside Dia. [Min]	92.58 mm
Inch/Metric	Metric
No. of Teeth	21
Hub Projection	N/A
Bore Style	Minimum Bore
Weight	0.57 LB
EAN or UPC	697950397016