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