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
Bushing Series
3020
No. of Teeth Rows Strands
1
Chain Sprocket Pitch
1.5 in
Material External Use
Steel
Bushing Bore [Min]
0.938 in
Hardened Teeth
With Hardened Teeth
Bore Size [Min]
0.938 in
No. of Strands Across
1
Chain No.
120
Martin No.
120BTB18H
Sprocket Style
B
Pitch Diameter
8.638 in
Construction Internal
Welded
O.D.
9.407 in
Single Strand Tooth Thickness
0.924 in
Hub Dia.
5 1/4 in
Outside Dia. [Min]
9.4070 in
Caliper Diameter
7.7632 in
Material Internal Use
Carbon Steel
Hub Projection
1.08 in
Type
B
Bushing Bore Size [Min]
0.938 in
Outside Dia.
9.407 in
Chain Sprocket Number
120
Pitch Dia.
8.638 in
Bushing Type
Taper Lock
Hub Length
1.08 in
Bushing Bore Size [Max]
3 in
Bushing Bore [Max]
3 in
Tooth Width
0.924 in
Overall Length
2 in
Bore Size [Max]
3 in
Overall Length Less Threads
N/A
Inch/Metric
Inch
Bore Type
Bushed
No. of Teeth
18
Material
Steel
Hub O.D.
5.25 in
Length Through Bore
2 in
Chain Pitch
1.500 in
Width Across Teeth
0.924 in
Weight
13.36 LB
EAN or UPC
697950043876
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