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