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