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’ QD bushings
Stocked Heat Treat
Material External Use
Steel
Overall Length
1 5/8 in
O.D.
10.371 in
No. of Teeth Rows Strands
1
Outside Dia. [Min]
10.3710 in
Hub O.D.
6.25 in
Bushing Type
QD
Length Through Bore
1.625 in
Chain No.
120
Hub Dia.
6 1/4 in
Outside Dia.
10.371 in
No. of Teeth
20
Martin No.
120E20H
Chain Sprocket Pitch
1.5 in
Inch/Metric
Inch
Bushing Bore [Max]
3 1/2 in
Bushing Series
E
Hardened Teeth
With Hardened Teeth
Pitch Dia.
9.589 in
Construction Internal
Solid
Bore Size [Min]
0.875 in
Type
B
Chain Pitch
1.500 in
Bushing Bore Size [Min]
0.875 in
Material
Steel
Pitch Diameter
9.589 in
Width Across Teeth
0.924 in
Tooth Width
0.924 in
Sprocket Style
B
Bushing Bore Size [Max]
3.313 in
Chain Sprocket Number
120
Single Strand Tooth Thickness
0.924 in
Bore Size [Max]
3.313 in
Bushing Bore [Min]
0.875 in
No. of Strands Across
1
Caliper Diameter
8.7137 in
Hub Length
0.7 in
Screw Size
1/2-13 NC
Hub Projection
0.7 in
Material Internal Use
Carbon Steel
Bore Type
Bushed
Overall Length Less Threads
N/A
Weight
18.08 LB
EAN or UPC
697950042565
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