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