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
Hardened teeth sprockets afford longer chain and sprocket life
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
Pitch Diameter
7 5/16 in
Hardened Teeth
With Hardened Teeth
Length Through Bore
2 in
Bushing Type
Taper Lock
Single Strand Tooth Thickness
0.924 in
Chain Sprocket Pitch
1.75 in
Overall Length
2 in
Outside Dia.
8.15 in
Hub O.D.
5.25 in
No. of Teeth Rows Strands
1
O.D.
8.15 in
Chain No.
140
Bushing Bore Size [Min]
0.938 in
Bushing Bore Size [Max]
3 in
Type
B
Martin No.
140BTB13H
Hub Dia.
5 1/4 in
Caliper Diameter
6.2592 in
Bore Size [Min]
0.938 in
Material Internal Use
Carbon Steel
Construction Internal
Welded
Bushing Bore [Max]
3 in
Bushing Series
3020
No. of Teeth
13
Hub Projection
1.08 in
Width Across Teeth
0.924 in
Sprocket Style
B
Bore Type
Bushed
Chain Pitch
1.750 in
Inch/Metric
Inch
Chain Sprocket Number
140
Bore Size [Max]
3 in
Material External Use
Steel
Pitch Dia.
7.313 in
Hub Length
1.08 in
Bushing Bore [Min]
0.938 in
Tooth Width
0.924 in
Overall Length Less Threads
N/A
Material
Steel
Outside Dia. [Min]
8.1500 in
No. of Strands Across
1
Weight
9.1 LB
EAN or UPC
697950043920
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