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