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No. 40 - 1/2" Pitch - Single - Bored to Size Sprocket

40BS21 1 1/8

No. 40 - 1/2" Pitch - Single - Bored to Size Sprocket
Item #100807068
  • 40 Chain Number
  • 1 Strand
  • 21 Teeth
  • 3.617 in Outside Diameter
  • 1.125 in Finished Bore
  • Without Hardened Teeth
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No. 40 - 1/2" Pitch - Single - Bored to Size Sprocket
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    Shipment Options
  • 40 Chain Number
  • 1 Strand
  • 21 Teeth
  • 3.617 in Outside Diameter
  • 1.125 in Finished Bore

features

  • Conforms to ANSI B29.1-1975 standards
Set Screw Size 5/16-18 X 5/16
Keyway w/Keyway & Set Screw
Chain No. 40
Hardened Teeth Without Hardened Teeth
Length Through Bore 1 in
Hub Length Thru 0.716 in
Inch/Metric Inch
Finished Bore 1 1/8 in
Bore Type Bored to Size
Caliper Diameter 3.0334 in
Martin No. 40BS21
Hub Dia. 2 3/4 in
Chain Pitch 1/2 in
Pitch Diameter 3.355 in
Width Across Teeth 0.284 in
Outside Dia. [Min] 3.6170 in
Single Strand Tooth Thickness 0.284 in
Pitch Diameter [Min] 3.355 in
Keyway Size 1/4 x 1/8
Outside Dia. 3.6170 in
No. of Screws 2
Hub Projection 0.72 in
No. of Strands Across 1
Sprocket Style B
No. of Teeth 21
Material Steel
Weight 1.55 LB
EAN or UPC 697950005164
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