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
Hardened teeth sprockets afford longer chain and sprocket life
Tolerances meet or exceed ANSI standards
Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out
Interchangeable with other manufacturers’ Taper bushings
Stocked Heat Treat
No. of Strands Across
1
Overall Length
2 in
Length Through Bore
2 in
Bushing Series
3020
Bore Size [Max]
3 in
Material Internal Use
Carbon Steel
Single Strand Tooth Thickness
0.924 in
Pitch Diameter
8.638 in
Bushing Type
Taper Lock
Tooth Width
0.924 in
Hardened Teeth
With Hardened Teeth
Outside Dia. [Min]
9.4070 in
Chain No.
120
Bore Size [Min]
0.938 in
No. of Teeth Rows Strands
1
Construction Internal
Welded
Bushing Bore [Min]
0.938 in
Hub O.D.
5.25 in
Width Across Teeth
0.924 in
Inch/Metric
Inch
Bore Type
Bushed
Hub Dia.
5 1/4 in
Caliper Diameter
7.7632 in
Hub Length
1.08 in
Sprocket Style
B
Hub Projection
1.08 in
O.D.
9.407 in
Bushing Bore Size [Max]
3 in
Chain Sprocket Pitch
1.5 in
Pitch Dia.
8.638 in
Chain Sprocket Number
120
Bushing Bore Size [Min]
0.938 in
Material
Steel
Type
B
Bushing Bore [Max]
3 in
Martin No.
120BTB18H
No. of Teeth
18
Chain Pitch
1.500 in
Material External Use
Steel
Overall Length Less Threads
N/A
Outside Dia.
9.407 in
Weight
13.36 LB
EAN or UPC
697950043876
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