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Finished Bore Sprocket

40BS21 1 3/8

Finished Bore Sprocket
Item #100807070
  • 40 Chain Number
  • 1 Strand
  • 21 Teeth
  • 3.617 in Outside Diameter
  • 1.375 in Finished Bore
  • Without Hardened Teeth
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Finished Bore Sprocket
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    Shipment Options
  • 40 Chain Number
  • 1 Strand
  • 21 Teeth
  • 3.617 in Outside Diameter
  • 1.375 in Finished Bore

features

  • Bored to size
  • Tolerances meet or exceed ANSI standards
  • Manufactured of high carbon steel
  • Precise machining and processes ensure consistent finish and high quality
  • Bores are concentric to pitch line, minimizing run out
  • 2 set screws� keyed on centerline of tooth

compliances

  • Conforms to ANSI B29.1-1975 standards
Keyway Size 5/16 x 5/32
Chain Pitch 0.5 in
Material Steel
Outside Dia. [Min] 3.617 in
Hardened Teeth Without Hardened Teeth
Finished Bore 1 3/8 in
Inch/Metric Inch
Sprocket Style B
No. of Strands Across 1
Pitch Diameter [Min] 3.3548 in
Bore Type Bored to Size
Set Screw Size 5/16-18 X 5/16
Outside Dia. 3.617 in
Keyway w/Keyway & Set Screw
Width Across Teeth 0.284 in
No. of Teeth 21
Hub Length Thru 0.716 in
Hub Projection 0.72 in
Hub Dia. 2 3/4 in
Chain No. 40
Pitch Diameter 3.3548 in
Caliper Diameter 3.0334 in
Single Strand Tooth Thickness 0.284 in
No. of Screws 2
Length Through Bore 1 in
Weight 1.41 LB
EAN or UPC 697950005195
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