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
Hub O.D.
2.469 in
Construction Internal
Solid With Recess Groove
Inch/Metric
Inch
Hub Projection
0.93 in
Caliper Diameter
2.8884 in
Type
B
No. of Strands Across
1
Bore Size [Min]
0.5 in
No. of Teeth Rows Strands
1
Single Strand Tooth Thickness
0.575 in
Bushing Type
Taper Lock
Pitch Dia.
3.55 in
Hardened Teeth
With Hardened Teeth
Material
Steel
Bore Size [Max]
1.25 in
Bushing Bore Size [Min]
0.5 in
Sprocket Style
B
Hub Length
0.93 in
O.D.
4.006 in
Chain Sprocket Number
80
Hub Dia.
2.4688 in
Bushing Series
1215
Chain Pitch
1.000 in
Overall Length Less Threads
N/A
Hub OD @ Recess
2.38 in
Chain Sprocket Pitch
1 in
Overall Length
1 1/2 in
Bushing Bore [Max]
1 1/4 in
Bore Type
Bushed
Material External Use
Steel
Length Through Bore
1.5 in
Hub Recess Depth
0.05 in
Chain No.
80
Hub Recessed
1
Pitch Diameter
3.550 in
No. of Teeth
11
Martin No.
80BTB11H
Tooth Width
0.575 in
Width Across Teeth
1.5 in
Hub Recess Width
0.28 in
Bushing Bore [Min]
0.5 in
Outside Dia. [Min]
4.0060 in
Outside Dia.
4.006 in
Bushing Bore Size [Max]
1.25 in
Material Internal Use
Carbon Steel
Weight
1.56 LB
EAN or UPC
697950043500
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