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
Single Strand Tooth Thickness
0.575 in
Chain Pitch
1.000 in
No. of Teeth
20
Hardened Teeth
With Hardened Teeth
Chain No.
80
Material Internal Use
Carbon Steel
Material
Steel
Inch/Metric
Inch
Caliper Diameter
5.7675 in
Length Through Bore
1.75 in
Bushing Series
2517
Construction Internal
Welded
Tooth Width
0.575 in
Bushing Bore Size [Max]
2.875 in
Outside Dia. [Min]
6.9140 in
Chain Sprocket Pitch
1 in
Width Across Teeth
1.75 in
Bushing Type
Taper Lock
Pitch Dia.
6.393 in
Chain Sprocket Number
80
Hub Length
1.19 in
Bushing Bore [Max]
2 1/2 in
O.D.
6.914 in
No. of Teeth Rows Strands
1
Type
B
Martin No.
80BTB20H
Hub O.D.
4.25 in
Bore Size [Max]
2.875 in
Sprocket Style
B
Pitch Diameter
6.393 in
Hub Projection
1.19 in
No. of Strands Across
1
Outside Dia.
6.914 in
Material External Use
Steel
Hub Dia.
4 1/4 in
Bushing Bore [Min]
1/2 in
Bore Type
Bushed
Overall Length
1 3/4 in
Overall Length Less Threads
N/A
Weight
5.37 LB
EAN or UPC
697950043593
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