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