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