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
Chain Sprocket Number
40
No. of Strands Across
1
No. of Teeth Rows Strands
1
Hub Length
0.59 in
Chain Sprocket Pitch
0.5 in
Bushing Bore [Min]
0.5 in
Material External Use
Steel
Outside Dia.
2.814 in
Tooth Width
0.284 in
Pitch Dia.
2.563 in
Bushing Bore [Max]
1 in
Chain No.
40
No. of Teeth
16
Bore Type
Bushed
Material Internal Use
Carbon Steel
Bushing Bore Size [Min]
0.5 in
Single Strand Tooth Thickness
0.284 in
Construction Internal
Solid
Bushing Bore Size [Max]
1 in
Hub Projection
0.59 in
Hardened Teeth
With Hardened Teeth
Width Across Teeth
0.875 in
Overall Length
0.875 in
Chain Pitch
0.500 in
Hub Dia.
1 13/16 in
Bushing Type
Taper Lock
Type
B
Overall Length Less Threads
N/A
Inch/Metric
Inch
Martin No.
40BTB16H
O.D.
2.814 in
Bore Size [Max]
1 in
Material
Steel
Length Through Bore
0.875 in
Outside Dia. [Min]
2.814 in
Bushing Series
1008
Hub O.D.
1.813 in
Caliper Diameter
2.2509 in
Bore Size [Min]
0.5 in
Pitch Diameter
2.5629 in
Sprocket Style
B
Weight
0.51 LB
EAN or UPC
697950043012
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