Geared Drives

Internal Gears

Boston Gear Internal Gears

Boston Gear's internal gears are spur gears turned "inside out." In other words, the teeth are cut into the inside diameter while the outside diameter is kept smooth. This design allows for the driving pinion to rotate internal to the gear, which, in turn, allows for clean operation. Intended for light duty applications, these gears are available only in brass. When choosing a mating spur gear, always remember that the difference in the number of teeth between the internal gear and pinion should not be less than 15 (14 1/2° PA) or 12 (20° PA).

Features
    • Available in 14 1/2° and 20° PA, our internal gears are designed to accommodate a wide range of equipment.
    • Manufactured from brass, these gears are ideal - and cost-effective - for a broad range of light-duty applications.
    • Their non-binding tooth design ensures smooth, quiet operation.
    • Pitch Diameter from 1" thru 6"
  • Altra Industrial Motion - Australia (Sydney)
  • Sydney New South Wales
  • Unit 1, 11 Penny Place
  • Arndell Park, NSW. 2148
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Melbourne)
  • Melbourne Victoria
  • Suite 36, Level 2/222 Lonsdale Street
  • Melbourne, VIC 3000
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Mackay Queensland)
  • Mackay Queensland
  • 14/20-34 Caterpillar Drive
  • Paget, QLD 4740
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Perth)
  • Perth Western Australia
  • 271 Great Eastern Highway
  • Belmont, WA 6104
  • Phone: 1300 ALTRAMOTION