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