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 Internal Use
Atomized Metals
Bushing Bore [Max]
1.625 in
Caliper Diameter
4.1537 in
Width Across Teeth
1 in
Bushing Series
1610
Bore Size [Max]
2.188 in
O.D.
4.738 in
Chain Pitch
0.500 in
Bushing Type
Taper Lock
Hardened Teeth
With Hardened Teeth
Hub Projection
0.72 in
Bushing Bore Size [Max]
2.188 in
Construction Internal
Solid
Overall Length Less Threads
N/A
Overall Length
1 in
Bushing Bore [Min]
0.5 in
Outside Dia.
4.738 in
Pitch Dia.
4.466 in
No. of Strands Across
1
Sprocket Style
B
Single Strand Tooth Thickness
0.284 in
Pitch Diameter
4.4657 in
Material
Steel
Hub Length
0.72 in
Hub Dia.
3 in
Chain No.
40
Chain Sprocket Number
40
Chain Sprocket Pitch
0.5 in
Inch/Metric
Inch
Type
B
Outside Dia. [Min]
4.738 in
Tooth Width
0.284 in
Martin No.
40BTB28H
Material External Use
Steel
No. of Teeth
28
Hub O.D.
3 in
Length Through Bore
1 in
No. of Teeth Rows Strands
1
Bore Type
Bushed
Weight
1.34 LB
EAN or UPC
697950043128
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