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’ Taper bushings
Stocked Heat Treat
Single Strand Tooth Thickness
0.924 in
Construction Internal
Welded
Hardened Teeth
With Hardened Teeth
Caliper Diameter
6.8644 in
Outside Dia. [Min]
8.717 in
Bore Size [Min]
0.938 in
No. of Teeth Rows Strands
1
Hub O.D.
5.25 in
Material Internal Use
Carbon Steel
Chain Pitch
1.750 in
Bushing Series
3020
Material
Steel
Tooth Width
0.924 in
Width Across Teeth
0.924 in
Bushing Bore [Min]
0.938 in
Pitch Diameter
7.8644 in
Bore Size [Max]
3 in
Bushing Bore Size [Min]
0.938 in
Bushing Bore [Max]
3 in
Inch/Metric
Inch
Chain Sprocket Pitch
1.75 in
Chain No.
140
Bushing Bore Size [Max]
3 in
No. of Teeth
14
Outside Dia.
8.717 in
Overall Length
2 in
Sprocket Style
B
Hub Length
1.08 in
Hub Dia.
5 1/4 in
O.D.
8.717 in
Martin No.
140BTB14H
Type
B
Length Through Bore
2 in
No. of Strands Across
1
Overall Length Less Threads
N/A
Bore Type
Bushed
Chain Sprocket Number
140
Bushing Type
Taper Lock
Material External Use
Steel
Hub Projection
1.08 in
Pitch Dia.
7.864 in
Weight
10.76 LB
EAN or UPC
697950043937
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