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
Bore Type
Bushed
Bushing Type
Taper Lock
Bushing Bore Size [Max]
1.625 in
Pitch Dia.
3.196 in
No. of Teeth
20
Bushing Series
1610
Bore Size [Max]
1.625 in
Chain Sprocket Number
40
Bushing Bore [Max]
1 5/8 in
Hardened Teeth
With Hardened Teeth
Single Strand Tooth Thickness
0.275 in
Width Across Teeth
0.841 in
Hub Length
0.16 in
No. of Teeth Rows Strands
2
Sprocket Style
B
Overall Length Less Threads
N/A
Inch/Metric
Inch
Outside Dia.
3.457 in
Hub Projection
0.16 in
Bushing Bore [Min]
0.5 in
Bore Size [Min]
0.5 in
Chain No.
40-2
Type
B
Chain Sprocket Pitch
0.5 in
Bushing Bore Size [Min]
0.5 in
Chain Pitch
0.500 in
Outside Dia. [Min]
3.4570 in
Martin No.
40BTB20H
Material
Steel
Hub O.D.
2.625 in
No. of Strands Across
2
Tooth Width
0.275 in
Material Internal Use
Carbon Steel
O.D.
3.457 in
Material External Use
Steel
Pitch Diameter
3.200 in
Overall Length
1 in
Caliper Diameter
2.88 in
Length Through Bore
1 in
Hub Dia.
2 5/8 in
Construction Internal
Solid
Weight
0.77 LB
EAN or UPC
697950030944
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