Martin S321 External Tooth Reborable Stock Spur Gear, 3 Diametral Pitch, 14.5 deg Pressure Angle, 3 in W Face, 21 Teeth, 7 in Dia Pitch, 1.438 to 3.875 in Dia Bore, Steel

S321 MFG #: S321
Requires Quote
Non-Stock Item
  • Bore Diameter: 1.438 to 3.875 in
  • Country of Origin: US
  • Diametral Pitch: 3
  • Face Width: 3 in
  • Hub Type: A
  • Manufacturer Name: Martin Sprocket & Gear
  • Material: Steel
  • Number of Teeth: 21
  • Outside Diameter: 7.666 in
  • Overall Length: 3 in
  • Pitch Diameter: 7 in
  • Pressure Angle: 14.5 deg
  • Request For Quote: Yes
  • Type: External Tooth Reborable
Martin stock spur gears are available in five different styles. Steel gears are furnished in plain style and plain style with hub. Cast gears are furnished, plain with hub, web with lightening holes, and spoke. Cast gears are machined on all operating surfaces. Martin cast gears are cast with a larger hub to provide extra strength and to allow for larger bores. Spur gears are stocked in both 14-1/2 and 20 deg pressure angles.
  • Item Features
  • Precise machining and processes ensure consistent finish and high quality
  • Commercial Class Gear. AGMA 6-8