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