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