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’ Taper bushings
Stocked Heat Treat
Material Internal Use
Carbon Steel
Bushing Bore [Min]
0.938 in
Pitch Diameter
10.632 in
Single Strand Tooth Thickness
0.924 in
Bushing Series
3020
Bushing Bore Size [Max]
3 in
Width Across Teeth
0.924 in
Hub Length
1.08 in
Material
Steel
Hub O.D.
5.25 in
Type
B
O.D.
11.537 in
Material External Use
Steel
No. of Teeth
19
Bore Size [Min]
0.938 in
Overall Length Less Threads
N/A
Hardened Teeth
With Hardened Teeth
Chain Pitch
1.750 in
Construction Internal
Welded
Bore Type
Bushed
Bushing Type
Taper Lock
Hub Projection
1.08 in
Caliper Diameter
9.5959 in
Chain Sprocket Pitch
1.75 in
Length Through Bore
2 in
Bore Size [Max]
3 in
Sprocket Style
B
Outside Dia.
11.537 in
Chain No.
140
Pitch Dia.
10.632 in
Inch/Metric
Inch
Outside Dia. [Min]
11.5370 in
No. of Teeth Rows Strands
1
Hub Dia.
5 1/4 in
Bushing Bore [Max]
3 in
Martin No.
140BTB19H
No. of Strands Across
1
Bushing Bore Size [Min]
0.938 in
Chain Sprocket Number
140
Overall Length
2 in
Tooth Width
0.924 in
Weight
20.84 LB
EAN or UPC
697950043982
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