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
Material External Use
Steel
Outside Dia. [Min]
8.9240 in
Hub Projection
1.08 in
Hub Dia.
5 1/4 in
Overall Length
2 in
Type
B
Tooth Width
0.924 in
No. of Strands Across
1
Hardened Teeth
With Hardened Teeth
Bushing Bore Size [Min]
0.938 in
Sprocket Style
B
Material Internal Use
Carbon Steel
Length Through Bore
2 in
Overall Length Less Threads
N/A
Chain Sprocket Number
120
Chain No.
120
Pitch Dia.
8.163 in
Chain Pitch
1.500 in
Hub O.D.
5.25 in
Chain Sprocket Pitch
1.5 in
Bushing Bore [Max]
3 in
Inch/Metric
Inch
Bushing Bore [Min]
0.938 in
Hub Length
1.08 in
Caliper Diameter
7.2535 in
Bushing Series
3020
No. of Teeth Rows Strands
1
Bore Type
Bushed
No. of Teeth
17
Single Strand Tooth Thickness
0.924 in
Bore Size [Min]
0.938 in
Outside Dia.
8.924 in
Width Across Teeth
0.924 in
Bore Size [Max]
3 in
Martin No.
120BTB17H
Material
Steel
Pitch Diameter
8.163 in
O.D.
8.924 in
Bushing Bore Size [Max]
3 in
Construction Internal
Welded
Bushing Type
Taper Lock
Weight
11.82 LB
EAN or UPC
697950043869
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