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