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
Bushing Bore [Min]
0.938 in
Sprocket Style
B
Bushing Bore [Max]
3 in
Hardened Teeth
With Hardened Teeth
Pitch Diameter
12.4443 in
Chain Pitch
1.500 in
Chain No.
120
Chain Sprocket Number
120
Outside Dia.
13.254 in
Bushing Series
3020
O.D.
13.254 in
Hub Projection
1.08 in
No. of Teeth
26
Bore Size [Min]
0.938 in
Overall Length Less Threads
N/A
Material External Use
Steel
Inch/Metric
Inch
No. of Teeth Rows Strands
1
Overall Length
2 in
Chain Sprocket Pitch
1.5 in
Caliper Diameter
11.5693 in
Outside Dia. [Min]
13.254 in
Hub O.D.
5.25 in
Single Strand Tooth Thickness
0.924 in
No. of Strands Across
1
Material
Steel
Martin No.
120BTB26H
Length Through Bore
2 in
Material Internal Use
Carbon Steel
Pitch Dia.
12.444 in
Construction Internal
Welded
Bushing Type
Taper Lock
Width Across Teeth
0.924 in
Hub Length
1.08 in
Bore Size [Max]
3 in
Tooth Width
0.924 in
Bushing Bore Size [Max]
3 in
Bushing Bore Size [Min]
0.938 in
Type
B
Hub Dia.
5 1/4 in
Bore Type
Bushed
Weight
27.4 LB
EAN or UPC
697950043906
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