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
Martin No.
80BTB22H
Bushing Series
2517
Type
B
Single Strand Tooth Thickness
0.575 in
Bushing Bore Size [Max]
2.875 in
Bushing Type
Taper Lock
Hub Dia.
4 1/4 in
Material
Steel
No. of Strands Across
1
No. of Teeth
22
Hardened Teeth
With Hardened Teeth
Overall Length
1 3/4 in
Hub Projection
1.19 in
Caliper Diameter
6.4017 in
Chain Pitch
1.000 in
Outside Dia. [Min]
7.5550 in
Tooth Width
0.575 in
Construction Internal
Welded
Width Across Teeth
1.75 in
Inch/Metric
Inch
Chain No.
80
No. of Teeth Rows Strands
1
Material Internal Use
Carbon Steel
Bushing Bore [Max]
2 1/2 in
Bore Type
Bushed
Hub Length
1.19 in
Overall Length Less Threads
N/A
Length Through Bore
1.75 in
Pitch Dia.
7.027 in
Hub O.D.
4.25 in
Bushing Bore [Min]
1/2 in
Pitch Diameter
7.027 in
Outside Dia.
7.555 in
Chain Sprocket Number
80
O.D.
7.555 in
Sprocket Style
B
Bore Size [Max]
2.875 in
Chain Sprocket Pitch
1 in
Material External Use
Steel
Weight
6.41 LB
EAN or UPC
697950043616
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