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
Hub Dia.
5 1/4 in
Chain No.
120
Bore Size [Max]
3 in
Construction Internal
Welded
Chain Sprocket Pitch
1.5 in
No. of Teeth
19
Type
B
Single Strand Tooth Thickness
0.924 in
Bore Type
Bushed
Material External Use
Steel
Martin No.
120BTB19H
Sprocket Style
B
Bushing Bore [Min]
0.938 in
Bore Size [Min]
0.938 in
O.D.
9.889 in
No. of Teeth Rows Strands
1
Bushing Bore [Max]
3 in
Material
Steel
Hub Projection
1.08 in
Tooth Width
0.924 in
Hub O.D.
5.25 in
Pitch Diameter
9.1133 in
Bushing Bore Size [Min]
0.938 in
Hub Length
1.08 in
Bushing Series
3020
Outside Dia. [Min]
9.889 in
Overall Length
2 in
Overall Length Less Threads
N/A
Length Through Bore
2 in
Chain Pitch
1.500 in
Outside Dia.
9.889 in
Bushing Bore Size [Max]
3 in
Chain Sprocket Number
120
No. of Strands Across
1
Pitch Dia.
9.113 in
Material Internal Use
Carbon Steel
Width Across Teeth
0.924 in
Bushing Type
Taper Lock
Caliper Diameter
8.2072 in
Inch/Metric
Inch
Hardened Teeth
With Hardened Teeth
Weight
15.0 LB
EAN or UPC
697950043883
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