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