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
Chain Pitch
1.000 in
Bore Size [Min]
0.938 in
Hardened Teeth
With Hardened Teeth
Single Strand Tooth Thickness
0.557 in
Length Through Bore
2 in
Bushing Type
Taper Lock
Caliper Diameter
7.34 in
Tooth Width
0.557 in
No. of Strands Across
2
Martin No.
80BTB25H
Hub Dia.
6 7/8 in
Bushing Series
3020
Material Internal Use
Carbon Steel
Pitch Dia.
7.979 in
Chain Sprocket Number
80
Material External Use
Steel
Overall Length Less Threads
N/A
No. of Teeth Rows Strands
2
Pitch Diameter
7.980 in
Outside Dia. [Min]
8.5160 in
Hub O.D.
6.875 in
O.D.
8.516 in
Type
B
Hub Projection
0.3 in
No. of Teeth
25
Chain No.
80-2
Construction Internal
Solid
Overall Length
3 in
Width Across Teeth
1.71 in
Bushing Bore [Max]
3 in
Sprocket Style
B
Bore Type
Bushed
Bore Size [Max]
3 in
Chain Sprocket Pitch
1 in
Hub Length
0.3 in
Material
Steel
Bushing Bore Size [Max]
3 in
Bushing Bore [Min]
0.938 in
Outside Dia.
8.516 in
Bushing Bore Size [Min]
0.938 in
Inch/Metric
Inch
Weight
16.54 LB
EAN or UPC
697950032481
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