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
Hub Projection
0.83 in
Hub Dia.
4 1/4 in
Sprocket Style
B
No. of Teeth
15
Overall Length
1 3/4 in
O.D.
7.957 in
Pitch Diameter
7.215 in
Martin No.
120BTB15H
Bore Size [Max]
3.25 in
Hub Length
0.83 in
Inch/Metric
Inch
Bushing Bore [Min]
1/2 in
Length Through Bore
1.75 in
Hub O.D.
4.25 in
Pitch Dia.
7.215 in
Bore Type
Bushed
Width Across Teeth
1.75 in
Type
B
Construction Internal
Solid
Outside Dia.
7.957 in
Caliper Diameter
6.3001 in
No. of Teeth Rows Strands
1
Single Strand Tooth Thickness
0.924 in
Chain No.
120
Hardened Teeth
With Hardened Teeth
Bushing Type
Taper Lock
Chain Pitch
1.500 in
Bushing Bore Size [Max]
3.25 in
Overall Length Less Threads
N/A
Bushing Bore [Max]
2 1/2 in
Material Internal Use
Carbon Steel
Outside Dia. [Min]
7.9570 in
No. of Strands Across
1
Bushing Series
2517
Material External Use
Steel
Material
Steel
Tooth Width
0.924 in
Chain Sprocket Pitch
1.5 in
Chain Sprocket Number
120
Weight
9.02 LB
EAN or UPC
697950043845
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