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
Bushing Series
3020
Bushing Type
Taper Lock
Hardened Teeth
With Hardened Teeth
Chain Sprocket Number
140
Length Through Bore
2 in
Material Internal Use
Carbon Steel
Pitch Diameter
10.0778 in
Bore Type
Bushed
Bushing Bore [Max]
3 in
Chain No.
140
Hub O.D.
5.25 in
Caliper Diameter
9.0778 in
Material External Use
Steel
Type
B
Tooth Width
0.924 in
No. of Teeth Rows Strands
1
Hub Projection
1.08 in
Inch/Metric
Inch
Overall Length
2 in
Bore Size [Max]
3 in
Pitch Dia.
10.078 in
Width Across Teeth
0.924 in
Bushing Bore Size [Min]
0.938 in
Chain Pitch
1.750 in
Outside Dia.
10.975 in
Hub Length
1.08 in
Outside Dia. [Min]
10.975 in
O.D.
10.975 in
Single Strand Tooth Thickness
0.924 in
Chain Sprocket Pitch
1.75 in
No. of Teeth
18
Hub Dia.
5 1/4 in
Material
Steel
Overall Length Less Threads
N/A
No. of Strands Across
1
Construction Internal
Welded
Bore Size [Min]
0.938 in
Sprocket Style
B
Martin No.
140BTB18H
Bushing Bore Size [Max]
3 in
Bushing Bore [Min]
0.938 in
Weight
18.58 LB
EAN or UPC
697950043975
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