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