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