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