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