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