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
Outside Dia. [Min]
10.412 in
Outside Dia.
10.412 in
Single Strand Tooth Thickness
0.924 in
Bushing Bore [Max]
3 in
Bushing Type
Taper Lock
Type
B
Hardened Teeth
With Hardened Teeth
No. of Teeth
17
Bore Size [Min]
0.938 in
Hub Length
1.08 in
Chain Sprocket Number
140
No. of Teeth Rows Strands
1
Hub O.D.
5.25 in
No. of Strands Across
1
O.D.
10.412 in
Bore Type
Bushed
Pitch Diameter
9.5238 in
Tooth Width
0.924 in
Length Through Bore
2 in
Sprocket Style
B
Bore Size [Max]
3 in
Chain Sprocket Pitch
1.75 in
Hub Projection
1.08 in
Construction Internal
Welded
Martin No.
140BTB17H
Bushing Series
3020
Bushing Bore Size [Min]
0.938 in
Hub Dia.
5 1/4 in
Pitch Dia.
9.524 in
Inch/Metric
Inch
Chain Pitch
1.750 in
Material
Steel
Overall Length
2 in
Material External Use
Steel
Width Across Teeth
0.924 in
Caliper Diameter
8.4832 in
Overall Length Less Threads
N/A
Bushing Bore [Min]
0.938 in
Bushing Bore Size [Max]
3 in
Chain No.
140
Material Internal Use
Carbon Steel
Weight
16.1 LB
EAN or UPC
697950043968
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