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
Hardened teeth sprockets afford longer chain and sprocket life
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
Tooth Width
0.924 in
Length Through Bore
2 in
Pitch Diameter
14.350 in
No. of Teeth
30
Material
Steel
Sprocket Style
B
Chain Sprocket Pitch
1.5 in
Bore Size [Max]
3 in
Hardened Teeth
With Hardened Teeth
Outside Dia. [Min]
15.1720 in
Chain Sprocket Number
120
Width Across Teeth
0.924 in
Bushing Bore Size [Max]
3 in
Overall Length Less Threads
N/A
Inch/Metric
Inch
Material Internal Use
Carbon Steel
Caliper Diameter
13.4752 in
Hub Length
1.08 in
Bushing Type
Taper Lock
Material External Use
Steel
Overall Length
2 in
Hub O.D.
5.25 in
Bushing Bore Size [Min]
0.938 in
Bushing Bore [Max]
3 in
Outside Dia.
15.172 in
Chain Pitch
1.500 in
Chain No.
120
Bushing Bore [Min]
0.938 in
Martin No.
120BTB30H
Type
B
Bore Size [Min]
0.938 in
Hub Dia.
5 1/4 in
Pitch Dia.
14.35 in
No. of Teeth Rows Strands
1
O.D.
15.172 in
Bushing Series
3020
Single Strand Tooth Thickness
0.924 in
Bore Type
Bushed
Hub Projection
1.08 in
Construction Internal
Welded
No. of Strands Across
1
Weight
31.62 LB
EAN or UPC
697950065748
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