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