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
Width Across Teeth Rows
0.429 in
Sprocket Style
B
Single Strand Tooth Thickness
0.428 in
Outside Dia.
4.07 in
Length Through Bore
1 in
Inch/Metric
Metric
No. of Teeth Rows Strands
1
Bore Size [Min]
0.5 in
Caliper Diameter
79.06 mm
Bushing Series
1610
Hub Projection
14.53 mm
Material
Steel
Bushing Bore [Min]
0.5 in
Overall Length Less Threads
N/A
O.D.
4.07 in
Hub O.D.
2.781 in
Construction Internal
Solid
Hardened Teeth
With Hardened Teeth
Chain No.
12B-1
No. of Strands Across
1
Bushing Bore Size [Min]
0.5 in
Bushing Bore Size [Max]
1.625 in
Type
B
Root Diameter
79.56 mm
Bushing Type
Taper Lock
Outside Dia. [Min]
103.37 mm
Bore Size [Max]
1.625 in
Bore Type
Bushed
Chain Sprocket Number
12B
Overall Length
25.4 mm
Pitch Dia.
3.608 in
Material External Use
Steel
Hub Length
14.53 mm
Hub Dia.
70.64 mm
Bushing Bore [Max]
38.1 mm
Chain Sprocket Pitch
0.75 in
No. of Teeth
15
Chain Pitch
0.750 in
Width Across Teeth
10.87 mm
Material Internal Use
Carbon Steel
Pitch Diameter
91.63 mm
Weight
1.19 LB
EAN or UPC
697950410074
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