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
Material Internal Use
Carbon Steel
Martin No.
100E28H
Bushing Bore [Min]
0.875 in
Type
B
Hub Projection
0.94 in
No. of Teeth
28
Bore Size [Min]
0.875 in
Chain Pitch
1.250 in
Pitch Diameter
11.164 in
Caliper Diameter
10.4143 in
Material External Use
Steel
Overall Length Less Threads
N/A
Width Across Teeth
0.692 in
No. of Teeth Rows Strands
1
Bushing Series
E
Bushing Bore Size [Max]
3.313 in
Bushing Bore [Max]
3 1/2 in
Hub Length
0.94 in
Sprocket Style
B
Bushing Bore Size [Min]
0.875 in
Outside Dia. [Min]
11.8440 in
Bore Type
Bushed
O.D.
11.844 in
Inch/Metric
Inch
Single Strand Tooth Thickness
0.692 in
Chain No.
100
Hardened Teeth
With Hardened Teeth
Chain Sprocket Number
100
Chain Sprocket Pitch
1.25 in
Length Through Bore
1.625 in
Pitch Dia.
11.164 in
Outside Dia.
11.844 in
Bore Size [Max]
3.313 in
Overall Length
1 5/8 in
Hub O.D.
6.25 in
Construction Internal
Welded
Tooth Width
0.692 in
No. of Strands Across
1
Bushing Type
QD
Material
Steel
Screw Size
1/2-13 NC
Hub Dia.
6 1/4 in
Weight
20.4 LB
EAN or UPC
697950042466
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