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