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
Bushing Bore [Max]
2 1/2 in
No. of Teeth Rows Strands
1
O.D.
6.986 in
Material
Steel
Bore Type
Bushed
Pitch Dia.
6.268 in
Bushing Bore [Min]
1/2 in
Bushing Bore Size [Max]
3.188 in
No. of Teeth
13
Chain Sprocket Pitch
1.5 in
Chain No.
120
Martin No.
120BTB13H
Material Internal Use
Carbon Steel
Chain Sprocket Number
120
Construction Internal
Solid
Chain Pitch
1.500 in
Caliper Diameter
5.3472 in
Hub Dia.
4 1/4 in
Hub Length
0.83 in
Pitch Diameter
6.268 in
Length Through Bore
1.75 in
Hardened Teeth
With Hardened Teeth
Hub O.D.
4.25 in
Outside Dia.
6.986 in
Sprocket Style
B
Inch/Metric
Inch
Overall Length
1 3/4 in
Bushing Series
2517
Tooth Width
0.924 in
Bushing Type
Taper Lock
Type
B
Bore Size [Max]
3.188 in
Single Strand Tooth Thickness
0.924 in
Width Across Teeth
1.75 in
No. of Strands Across
1
Hub Projection
0.83 in
Overall Length Less Threads
N/A
Outside Dia. [Min]
6.9860 in
Material External Use
Steel
Weight
6.46 LB
EAN or UPC
697950043821
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