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