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
No. of Strands Across
1
Overall Length
2 in
Construction Internal
Welded
Hub Projection
1.08 in
Pitch Diameter
8.163 in
Chain Sprocket Pitch
1.5 in
Single Strand Tooth Thickness
0.924 in
Chain Pitch
1.500 in
Bore Size [Min]
0.938 in
Width Across Teeth
0.924 in
Sprocket Style
B
Overall Length Less Threads
N/A
Outside Dia. [Min]
8.9240 in
Bushing Bore Size [Min]
0.938 in
No. of Teeth Rows Strands
1
Material
Steel
Bore Size [Max]
3 in
Material Internal Use
Carbon Steel
Inch/Metric
Inch
Bushing Bore [Min]
0.938 in
No. of Teeth
17
Chain No.
120
Tooth Width
0.924 in
Bore Type
Bushed
Chain Sprocket Number
120
Hardened Teeth
With Hardened Teeth
O.D.
8.924 in
Martin No.
120BTB17H
Hub Dia.
5 1/4 in
Length Through Bore
2 in
Material External Use
Steel
Outside Dia.
8.924 in
Hub O.D.
5.25 in
Bushing Bore [Max]
3 in
Bushing Bore Size [Max]
3 in
Bushing Type
Taper Lock
Caliper Diameter
7.2535 in
Bushing Series
3020
Hub Length
1.08 in
Type
B
Pitch Dia.
8.163 in
Weight
11.82 LB
EAN or UPC
697950043869
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