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
Inch/Metric
Inch
Pitch Diameter
9.567 in
Type
B
Hub Length
1.19 in
Hardened Teeth
With Hardened Teeth
Single Strand Tooth Thickness
0.575 in
Material External Use
Steel
Bushing Bore [Max]
2 1/2 in
Chain Sprocket Number
80
Material Internal Use
Carbon Steel
Construction Internal
Welded
Hub O.D.
4.25 in
O.D.
10.114 in
Length Through Bore
1.75 in
Bore Size [Max]
3.25 in
Sprocket Style
B
Bushing Bore [Min]
1/2 in
Outside Dia.
10.114 in
Bushing Series
2517
Chain No.
80
Hub Projection
1.19 in
Caliper Diameter
8.9418 in
Bushing Bore Size [Max]
3.25 in
Chain Pitch
1.000 in
Pitch Dia.
9.567 in
Bushing Type
Taper Lock
Outside Dia. [Min]
10.1140 in
No. of Strands Across
1
Overall Length
1 3/4 in
Hub Dia.
4 1/4 in
Bore Type
Bushed
Width Across Teeth
1.75 in
Overall Length Less Threads
N/A
Martin No.
80BTB30H
No. of Teeth
30
No. of Teeth Rows Strands
1
Tooth Width
0.575 in
Material
Steel
Chain Sprocket Pitch
1 in
Weight
11.5 LB
EAN or UPC
697950043661
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