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