D12B18

Metric Roller Chain Sprocket

Item #100965869

20 mm Minimum Bore

60 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

Bore Style	Minimum Bore
Hub Dia.	89 mm
No. of Teeth	18
Outside Dia. [Min]	121.45 mm
Pitch Diameter [Min]	109.7 mm
No. of Strands Across	2
Length Through Bore	50.01 mm
Bore Range [Min]	20 mm
Pitch Diameter	109.7 mm
Root Diameter	97.6 mm
Pitch Root Diameter	97.6 mm
Pin Diameter	12.065 mm
Family Name	No. 12 - 19.050 mm Pitch - Double - Type B & C
Inch/Metric	Metric
Width Across Teeth	30.33 mm
Bore Range [Max]	60 mm
Chain No.	12B, 12B-2
Chain Pitch	19.05 mm
Sprocket Style	B
Hardened Teeth	Without Hardened Teeth
Hub Length Thru	39.13 mm
Material	Steel
Bore Type	Reborable
Outside Dia.	121.45 mm
Caliper Diameter	97.64 mm
Single Strand Tooth Thickness	10.87 mm
Martin No.	12B18
Series	B
Weight	6.56 LB
EAN or UPC	697950401386