Martin

Martin 12B20 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 16 to 60 mm Dia Bore, 133.524 mm OD, #12B-1 Chain, 20 Teeth, 19.05 mm Pitch, Steel

12B20-MAR MFG #: 12B20
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Non-Stock Item
Martin 12B20 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 16 to 60 mm Dia Bore, 133.524 mm OD, #12B-1 Chain, 20 Teeth, 19.05 mm Pitch, Steel
  • Bore Diameter: 16 to 60 mm
  • Chain Size: #12B-1
  • Country of Origin: US
  • Hub Diameter: 89.992 mm
  • Length Through Bore: 35 mm
  • Manufacturer Name: Martin Sprocket & Gear
  • Material: Steel
  • Number of Teeth: 20
  • Outside Diameter: 133.524 mm
  • Pitch: 19.05 mm
  • Pitch Diameter: 121.776 mm
  • Type: Type B Single Strand Solid Stock Bore
Metric B style sprockets are flat sprockets with a hub extension on one side. These plain bore sprockets can easily be bored to a metric or standard size to fit your application. Keyways, set screws and harden teeth are quick alterations that can be made.
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  • Standards
  • Item Features
ANSI B29.1 - 1975|BS 228/13|CEMA Standard|ECCN: EAR99|MPTA Approved|NIBA Certified|PTDA Approved
  • Without hardened teeth
  • 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
  • https://www.youtube.com/watch?v=fSomOMNB_-Q