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