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Metric Roller Chain Sprocket

E20B12

Metric Roller Chain Sprocket
Item #100967469
  • 20B-3 Chain Number
  • 3 Strands
  • 12 Teeth
  • Without Hardened Teeth
  • B Sprocket Style
  • 25 mm Minimum Bore
  • 62 mm Maximum Bore
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Metric Roller Chain Sprocket
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    Shipment Options
  • 20B-3 Chain Number
  • 3 Strands
  • 12 Teeth
  • Without Hardened Teeth
  • B Sprocket Style

description

  • Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

features

  • Manufactured of high carbon steel
  • Precise machining and processes ensure consistent finish and high quality
  • Bores are concentric to pitch line, minimizing run out
  • Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Outside Dia. 143.31 mm
No. of Teeth 12
Hub Dia. 89.99 mm
Hardened Teeth Without Hardened Teeth
Chain Pitch 31.75 mm
Material Steel
Pitch Diameter 122.7 mm
Bore Range [Max] 62 mm
Inch/Metric Metric
Series B
Family Name No. 20 - 31.750 mm Pitch - Triple - Type B & C
Width Across Teeth 91.08 mm
Length Through Bore 115.01 mm
Martin No. 20B12
Bore Style Minimum Bore
Hub Length Thru 127 mm
Sprocket Style B
Pitch Root Diameter 103.6 mm
Outside Dia. [Min] 143.31 mm
Bore Range [Min] 25 mm
Chain No. 20B, 20B-3
Pin Diameter 19.05 mm
Caliper Diameter 103.62 mm
Root Diameter 103.6 mm
Single Strand Tooth Thickness 18.19 mm
No. of Strands Across 3
Pitch Diameter [Min] 122.7 mm
Bore Type Reborable
Weight 13.69 LB
EAN or UPC 697950405209
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