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
Hub O.D.
2.375 in
Outside Dia. [Min]
3.6780 in
Sprocket Style
B
Pitch Dia.
3.236 in
Pitch Diameter
3.236 in
Type
B
No. of Strands Across
1
O.D.
3.678 in
Chain Pitch
1.000 in
Bore Size [Max]
1.25 in
Overall Length
1 1/2 in
Overall Length Less Threads
N/A
Hub Recess Width
0.28 in
Tooth Width
0.575 in
Hub Dia.
2 3/8 in
Construction Internal
Solid With Recess Groove
Bushing Bore Size [Min]
0.5 in
Hub Recess Depth
0.07 in
Width Across Teeth
1.5 in
Outside Dia.
3.678 in
Bore Type
Bushed
Length Through Bore
1.5 in
Material Internal Use
Carbon Steel
Bore Size [Min]
0.5 in
Material
Steel
Martin No.
80BTB10H
Bushing Type
Taper Lock
Chain Sprocket Number
80
Caliper Diameter
2.6111 in
Bushing Bore Size [Max]
1.25 in
Bushing Series
1215
No. of Teeth Rows Strands
1
Hub Projection
0.54 in
Hub OD @ Recess
2.23 in
Chain No.
80
Bushing Bore [Min]
0.5 in
Hub Length
0.54 in
Single Strand Tooth Thickness
0.575 in
Hub Recessed
1
Material External Use
Steel
Bushing Bore [Max]
1 1/4 in
No. of Teeth
10
Hardened Teeth
With Hardened Teeth
Chain Sprocket Pitch
1 in
Weight
1.1 LB
EAN or UPC
697950043494
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