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
Construction Internal
Solid
Width Across Teeth
0.841 in
Inch/Metric
Inch
No. of Strands Across
2
Type
A
Bushing Bore Size [Max]
1 in
Material External Use
Steel
Bore Size [Max]
1 in
Hardened Teeth
With Hardened Teeth
Bushing Bore [Min]
0.5 in
Material Internal Use
Carbon Steel
Chain No.
40-2
Material
Steel
Bore Type
Bushed
Overall Length
7/8 in
No. of Teeth
15
Overall Length Less Threads
N/A
Hub Dia.
1.266 in
Outside Dia.
2.652 in
Bore Size [Min]
0.5 in
O.D.
2.652 in
Bushing Type
Taper Lock
Bushing Bore Size [Min]
0.5 in
Bushing Series
1008
Pitch Dia.
2.405 in
Bushing Bore [Max]
1 in
Hub O.D.
1.813 in
Chain Sprocket Pitch
0.5 in
Chain Pitch
0.500 in
Martin No.
40BTB15H
Single Strand Tooth Thickness
0.275 in
Length Through Bore
0.837 in
No. of Teeth Rows Strands
2
Sprocket Style
A
Tooth Width
0.275 in
Outside Dia. [Min]
2.6520 in
Caliper Diameter
2.08 in
Chain Sprocket Number
40
Pitch Diameter
2.400 in
Weight
0.51 LB
EAN or UPC
697950030890
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