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