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
Hardened Teeth
With Hardened Teeth
Bushing Type
Taper Lock
Chain Pitch
0.500 in
Bushing Bore Size [Max]
1.25 in
Pitch Dia.
2.721 in
Outside Dia.
2.975 in
Bushing Bore Size [Min]
0.5 in
Width Across Teeth
1 in
Hub O.D.
2.375 in
Hub Projection
0.72 in
Hub Recess Width
0.19 in
Hub Recessed
1
Pitch Diameter
2.7211 in
No. of Strands Across
1
Hub OD @ Recess
2.2 in
Overall Length Less Threads
N/A
Caliper Diameter
2.3975 in
Single Strand Tooth Thickness
0.284 in
No. of Teeth Rows Strands
1
No. of Teeth
17
Inch/Metric
Inch
Bushing Bore [Max]
1.25 in
Chain No.
40
Martin No.
40BTB17H
Material
Steel
Tooth Width
0.284 in
Bushing Series
1210
Material External Use
Steel
Sprocket Style
B
Chain Sprocket Pitch
0.5 in
Hub Length
0.72 in
Construction Internal
Solid With Recess Groove
Type
B
Material Internal Use
Carbon Steel
Hub Recess Depth
0.09 in
Length Through Bore
1 in
Outside Dia. [Min]
2.975 in
Bore Type
Bushed
Bore Size [Max]
1.25 in
Hub Dia.
2 3/8 in
Bushing Bore [Min]
0.5 in
Bore Size [Min]
0.5 in
Overall Length
1 in
O.D.
2.975 in
Chain Sprocket Number
40
Weight
0.54 LB
EAN or UPC
697950043029
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