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
Length Through Bore
0.875 in
Bore Size [Max]
1 in
Hub Dia.
1 13/16 in
Bushing Bore Size [Min]
0.5 in
Material
Steel
Width Across Teeth
0.875 in
Chain No.
40
Pitch Dia.
2.247 in
Type
B
No. of Strands Across
1
O.D.
2.491 in
Inch/Metric
Inch
No. of Teeth
14
Overall Length Less Threads
N/A
Material Internal Use
Carbon Steel
Overall Length
0.875 in
Tooth Width
0.284 in
No. of Teeth Rows Strands
1
Martin No.
40BTB14H
Sprocket Style
B
Hardened Teeth
With Hardened Teeth
Hub O.D.
1.813 in
Outside Dia. [Min]
2.491 in
Chain Sprocket Number
40
Bushing Bore [Min]
0.5 in
Hub Recessed
1
Hub OD @ Recess
1.66 in
Bore Size [Min]
0.5 in
Pitch Diameter
2.247 in
Bushing Bore Size [Max]
1 in
Chain Pitch
0.500 in
Bushing Series
1008
Bushing Bore [Max]
1 in
Bushing Type
Taper Lock
Outside Dia.
2.491 in
Hub Recess Depth
0.08 in
Material External Use
Steel
Caliper Diameter
1.935 in
Hub Projection
0.59 in
Single Strand Tooth Thickness
0.284 in
Chain Sprocket Pitch
0.5 in
Construction Internal
Solid With Recess Groove
Hub Length
0.59 in
Bore Type
Bushed
Hub Recess Width
0.19 in
Weight
0.34 LB
EAN or UPC
697950042992
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