Hardened teeth on the smaller sprocket of a roller chain drive are recommended if the drive ratio is four to one or greater or if the smaller sprocket has 24 teeth or less and is running at a speed of over 600 rpm.
features
Tolerances meet or exceed ISO standards
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
Interchangeable with other manufacturers’ taper bushings
Hub Length
14.53 mm
Width Across Teeth
10.87 mm
Pitch Dia.
3.608 in
Outside Dia. [Min]
103.37 mm
Length Through Bore
1 in
Bushing Bore Size [Min]
0.5 in
Bushing Type
Taper Lock
Bushing Bore [Min]
0.5 in
Chain Sprocket Pitch
0.75 in
Single Strand Tooth Thickness
0.428 in
Material External Use
Steel
Bushing Bore [Max]
38.1 mm
Bushing Bore Size [Max]
1.625 in
Material
Steel
Construction Internal
Solid
No. of Teeth Rows Strands
1
Chain No.
12B-1
Hardened Teeth
With Hardened Teeth
Bushing Series
1610
Inch/Metric
Metric
Width Across Teeth Rows
0.429 in
Outside Dia.
4.07 in
Overall Length Less Threads
N/A
Hub Projection
14.53 mm
O.D.
4.07 in
Caliper Diameter
79.06 mm
Chain Sprocket Number
12B
Bore Type
Bushed
Overall Length
25.4 mm
Chain Pitch
0.750 in
Bore Size [Min]
0.5 in
Sprocket Style
B
Hub O.D.
2.781 in
Bore Size [Max]
1.625 in
Hub Dia.
70.64 mm
No. of Teeth
15
Pitch Diameter
91.63 mm
Type
B
No. of Strands Across
1
Root Diameter
79.56 mm
Material Internal Use
Carbon Steel
Weight
1.19 LB
EAN or UPC
697950410074
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