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 Type
QD
Overall Length Less Threads
N/A
Inch/Metric
Inch
Tooth Width
0.924 in
No. of Strands Across
1
Bushing Series
SF
Caliper Diameter
5.3472 in
Material Internal Use
Carbon Steel
Type
B
Chain Sprocket Pitch
1.5 in
Material
Steel
Hub O.D.
4.75 in
Bore Type
Bushed
Chain Sprocket Number
120
Overall Length
1 1/4 in
Hub Length
0.33 in
Width Across Teeth
0.924 in
Bushing Bore Size [Max]
2.938 in
No. of Teeth Rows Strands
1
Chain No.
120
Hub Projection
0.33 in
Bushing Bore Size [Min]
0.5 in
Bore Size [Min]
0.5 in
Pitch Dia.
6.268 in
Martin No.
120SF13H
Screw Size
1/4-20 NC
Length Through Bore
1.25 in
Construction Internal
Solid
No. of Teeth
13
O.D.
6.986 in
Bushing Bore [Min]
0.5 in
Bushing Bore [Max]
2 15/16 in
Chain Pitch
1.500 in
Outside Dia.
6.986 in
Outside Dia. [Min]
6.9860 in
Bore Size [Max]
2.938 in
Single Strand Tooth Thickness
0.924 in
Hub Dia.
4 3/4 in
Hardened Teeth
With Hardened Teeth
Pitch Diameter
6.268 in
Material External Use
Steel
Sprocket Style
B
Weight
6.06 LB
EAN or UPC
697950042497
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