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