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