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
Martin No.
100SDS12H
No. of Teeth
12
Bore Size [Max]
2 in
Pitch Dia.
4.83 in
Bushing Bore Size [Min]
0.5 in
Overall Length
3/4 in
Pitch Diameter
4.830 in
Overall Length Less Threads
N/A
Sprocket Style
B
Screw Size
1/4-20 NC
Type
B
Outside Dia.
5.415 in
Hub Length
0.06 in
Length Through Bore
0.75 in
Material
Steel
Bushing Bore [Max]
2 in
Single Strand Tooth Thickness
0.692 in
Chain Sprocket Number
100
Width Across Teeth
0.692 in
Hardened Teeth
With Hardened Teeth
Bore Size [Min]
0.5 in
Bushing Bore [Min]
0.5 in
O.D.
5.415 in
Material Internal Use
Carbon Steel
Chain Sprocket Pitch
1.25 in
Outside Dia. [Min]
5.4150 in
Bushing Series
SDS
No. of Teeth Rows Strands
1
Inch/Metric
Inch
Chain Pitch
1.250 in
Chain No.
100
Hub Projection
0.06 in
Tooth Width
0.692 in
Caliper Diameter
4.0796 in
No. of Strands Across
1
Bushing Type
QD
Hub O.D.
3.25 in
Bushing Bore Size [Max]
2 in
Construction Internal
Solid
Hub Dia.
3 1/4 in
Bore Type
Bushed
Material External Use
Steel
Weight
2.46 LB
EAN or UPC
697950042305
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