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
Bushing Series
1610
Material Internal Use
Carbon Steel
Martin No.
40BTB20H
Chain Pitch
0.500 in
Overall Length Less Threads
N/A
Hub Recessed
1
Material
Steel
Hub Dia.
2.7813 in
Bore Size [Min]
0.5 in
Caliper Diameter
2.8842 in
Hub Recess Depth
0.08 in
Overall Length
1 in
Bore Type
Bushed
Bushing Type
Taper Lock
Outside Dia.
3.457 in
Outside Dia. [Min]
3.457 in
Inch/Metric
Inch
Width Across Teeth
1 in
Pitch Diameter
3.1962 in
Tooth Width
0.284 in
No. of Teeth
20
Material External Use
Steel
Hub Length
0.72 in
Length Through Bore
1 in
Hub Recess Width
0.19 in
No. of Strands Across
1
No. of Teeth Rows Strands
1
Bushing Bore Size [Min]
0.5 in
Hub O.D.
2.781 in
Sprocket Style
B
Bore Size [Max]
1.625 in
Bushing Bore [Min]
0.5 in
Bushing Bore [Max]
1.625 in
Chain Sprocket Number
40
Bushing Bore Size [Max]
1.625 in
Hub Projection
0.72 in
Chain No.
40
Hardened Teeth
With Hardened Teeth
O.D.
3.457 in
Single Strand Tooth Thickness
0.284 in
Construction Internal
Solid With Recess Groove
Type
B
Hub OD @ Recess
2.63 in
Chain Sprocket Pitch
0.5 in
Pitch Dia.
3.196 in
Weight
0.7 LB
EAN or UPC
697950043050
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