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
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
Material External Use
Steel
No. of Teeth Rows Strands
1
Tooth Width
0.284 in
Hub Length
0.72 in
Outside Dia.
5.057 in
Caliper Diameter
4.4714 in
Chain Pitch
0.500 in
Bushing Type
Taper Lock
Chain Sprocket Pitch
0.5 in
Type
B
Bushing Bore Size [Max]
2.188 in
Pitch Dia.
4.783 in
O.D.
5.057 in
Chain Sprocket Number
40
Hub O.D.
3 in
No. of Teeth
30
Bore Size [Max]
2.188 in
Chain No.
40
Hardened Teeth
With Hardened Teeth
Outside Dia. [Min]
5.057 in
Length Through Bore
1 in
Hub Dia.
3 in
Martin No.
40BTB30H
Bore Type
Bushed
Construction Internal
Solid
Material
Steel
Single Strand Tooth Thickness
0.284 in
Material Internal Use
Atomized Metals
Hub Projection
0.72 in
Inch/Metric
Inch
Bushing Bore [Max]
1.625 in
No. of Strands Across
1
Width Across Teeth
1 in
Bushing Bore [Min]
0.5 in
Overall Length
1 in
Bushing Series
1610
Sprocket Style
B
Overall Length Less Threads
N/A
Pitch Diameter
4.7834 in
Weight
1.34 LB
EAN or UPC
697950043135
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