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
No. of Teeth
19
Material
Steel
Tooth Width
0.284 in
O.D.
3.296 in
Bore Size [Min]
0.5 in
Material Internal Use
Carbon Steel
Bore Size [Max]
1.25 in
Caliper Diameter
2.7154 in
Hardened Teeth
With Hardened Teeth
Hub Projection
0.72 in
Outside Dia.
3.296 in
Hub O.D.
2.469 in
Bushing Bore Size [Min]
0.5 in
Bushing Bore [Min]
0.5 in
Outside Dia. [Min]
3.296 in
No. of Teeth Rows Strands
1
Pitch Dia.
3.038 in
Length Through Bore
1 in
Single Strand Tooth Thickness
0.284 in
Chain No.
40
Hub Length
0.72 in
Width Across Teeth
1 in
Bushing Series
1210
Pitch Diameter
3.0378 in
Type
B
Chain Sprocket Pitch
0.5 in
Overall Length
1 in
Inch/Metric
Inch
No. of Strands Across
1
Bushing Type
Taper Lock
Construction Internal
Solid
Hub Dia.
2.4688 in
Chain Pitch
0.500 in
Chain Sprocket Number
40
Bore Type
Bushed
Sprocket Style
B
Martin No.
40BTB19H
Material External Use
Steel
Overall Length Less Threads
N/A
Bushing Bore Size [Max]
1.25 in
Bushing Bore [Max]
1.25 in
Weight
0.75 LB
EAN or UPC
697950043043
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