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 Projection
14.96 mm
Chain Sprocket Number
12B
Length Through Bore
1 in
Chain Pitch
0.750 in
Material Internal Use
Carbon Steel
No. of Strands Across
1
Chain Sprocket Pitch
0.75 in
Bushing Series
1610
No. of Teeth Rows Strands
1
Hub Dia.
82.55 mm
Overall Length Less Threads
N/A
Hub O.D.
3.25 in
Material External Use
Steel
Root Diameter
97.64 mm
O.D.
4.782 in
Bore Size [Min]
0.5 in
Bushing Type
Taper Lock
No. of Teeth
18
Bushing Bore Size [Min]
0.5 in
Bore Type
Bushed
Inch/Metric
Metric
Bushing Bore [Max]
38.1 mm
Material
Steel
Single Strand Tooth Thickness
0.437 in
Pitch Dia.
4.319 in
Overall Length
25.4 mm
Pitch Diameter
109.7 mm
Chain No.
12B-1
Hub Length
14.96 mm
Width Across Teeth Rows
0.429 in
Bushing Bore Size [Max]
1.625 in
Width Across Teeth
11.1 mm
Type
B
Bore Size [Max]
1.625 in
Hardened Teeth
With Hardened Teeth
Outside Dia. [Min]
121.45 mm
Caliper Diameter
97.64 mm
Sprocket Style
B
Outside Dia.
4.782 in
Construction Internal
Solid
Bushing Bore [Min]
0.5 in
Weight
1.9 LB
EAN or UPC
697950410104
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