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
Chain Pitch
1.750 in
Bushing Series
3020
Pitch Diameter
8.417 in
O.D.
9.283 in
Type
B
Material
Steel
Chain Sprocket Number
140
Bushing Bore [Max]
3 in
Chain No.
140
Hardened Teeth
With Hardened Teeth
No. of Teeth Rows Strands
1
Single Strand Tooth Thickness
0.924 in
Hub Projection
1.08 in
No. of Teeth
15
Bushing Type
Taper Lock
Construction Internal
Welded
Hub Dia.
5 1/4 in
Pitch Dia.
8.417 in
Chain Sprocket Pitch
1.75 in
Width Across Teeth
0.924 in
Inch/Metric
Inch
Bushing Bore Size [Max]
3 in
Length Through Bore
2 in
Bore Type
Bushed
Material Internal Use
Carbon Steel
Hub Length
1.08 in
Caliper Diameter
7.3709 in
Tooth Width
0.924 in
Hub O.D.
5.25 in
Overall Length
2 in
Overall Length Less Threads
N/A
Outside Dia. [Min]
9.283 in
Bushing Bore Size [Min]
0.938 in
Material External Use
Steel
Bushing Bore [Min]
0.938 in
Outside Dia.
9.283 in
Sprocket Style
B
Bore Size [Min]
0.938 in
No. of Strands Across
1
Bore Size [Max]
3 in
Martin No.
140BTB15H
Weight
12.38 LB
EAN or UPC
697950043944
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