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