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
Chain Pitch
0.750 in
Bushing Bore [Max]
31.75 mm
Bushing Bore Size [Max]
1.25 in
Inch/Metric
Metric
Material
Steel
Chain Sprocket Number
12B
Construction Internal
Solid
No. of Strands Across
1
Hub Length
14.53 mm
Caliper Diameter
73.54 mm
Pitch Diameter
85.61 mm
Chain Sprocket Pitch
0.75 in
Chain No.
12B-1
Width Across Teeth Rows
0.429 in
Overall Length
25.4 mm
Bore Size [Max]
1.25 in
Pitch Dia.
3.371 in
Bushing Bore [Min]
0.5 in
No. of Teeth Rows Strands
1
Hub O.D.
2.468 in
Hub Projection
14.53 mm
Single Strand Tooth Thickness
0.437 in
Sprocket Style
B
Hub Dia.
62.69 mm
Material External Use
Steel
Bushing Bore Size [Min]
0.5 in
Overall Length Less Threads
N/A
Length Through Bore
1 in
Type
B
No. of Teeth
14
Outside Dia. [Min]
97.36 mm
Hardened Teeth
With Hardened Teeth
Bore Type
Bushed
Bore Size [Min]
0.5 in
Bushing Type
Taper Lock
O.D.
3.833 in
Bushing Series
1210
Root Diameter
73.54 mm
Material Internal Use
Carbon Steel
Width Across Teeth
11.1 mm
Outside Dia.
3.833 in
Weight
1.0 LB
EAN or UPC
697950410067
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