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