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
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
Chain Pitch
1.750 in
Bushing Bore Size [Max]
3.313 in
Construction Internal
Welded
Hub Projection
3/4 in
No. of Teeth Rows Strands
1
Hub Dia.
6 1/4 in
Hub Length
3/4 in
Pitch Dia.
11.187 in
Material Internal Use
Carbon Steel
Outside Dia. [Min]
12.099 in
Bore Size [Max]
3.313 in
Chain Sprocket Pitch
1.75 in
Bushing Bore Size [Min]
0.875 in
Width Across Teeth
0.924 in
No. of Strands Across
1
Length Through Bore
1.625 in
Type
B
Overall Length
1.625 in
Bushing Bore [Max]
3.5 in
Hub O.D.
6.25 in
Bore Size [Min]
0.875 in
Chain Sprocket Number
140
Bushing Series
E
Pitch Diameter
11.1868 in
Outside Dia.
12.099 in
Single Strand Tooth Thickness
0.924 in
Overall Length Less Threads
N/A
Caliper Diameter
10.1868 in
Hardened Teeth
With Hardened Teeth
Sprocket Style
B
Chain No.
140
Screw Size
1/2-13 NC
Material External Use
Steel
No. of Teeth
20
Tooth Width
0.924 in
Bore Type
Bushed
Martin No.
140E20H
Inch/Metric
Inch
O.D.
12.099 in
Bushing Bore [Min]
0.875 in
Material
Steel
Weight
24.42 LB
EAN or UPC
697950042749
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