Planetary Gearbox

Planetary Gearbox


Sri Techno Engineering Company specialises in design and construction of planetary reduction gears for mobile and industrial applications, wheel gears for tyres and tracks, hydraulic negative brakes. The company offers a Planetary Gearbox.
Advantages of Reggiana planetary gearbox:

  • High reduction ratios in small size (compact)
  • High torque transmission in small size
  • High radial loads on output shaft
  • Changing of ratio in same gearbox
  • 100% European product with European gear steel
  • Stock available in India.
In a planetary gearbox, the sun pinion transmits its motion to the satellites. The satellites then turn inside the ring gear, which is static. As consequence the satellite carrier rotates. The motion of the carrier is transmitted to an output shaft or to another reduction group.
Additional advantages:
  • Low noise level – smaller dimensions of teeth give lower peripheral velocity on the pitch diameter
  • High efficiency
  • Low oil consumption and zero oil leakage
  • Genuine in-line gearbox – axis of transmission (input and output) is same
  • Flexible ratio – from 3:1 to infinite
  • Stock available in Indian rupees.

  • High reduction ratios – given the same number of teeth Z1 and Z2 the planetary gear offers a higher ratio than the parallel shaft gear
  • High torque transmission – in a planetary gear the number of teeth in contact is higher than in a spur gear, therefore the planetary gear has a superior relation between torque handling capacity and dimensions
  • High radial loads on the shafts – in the planetary gear the internal forces are balanced, i.e., the resulting force is zero. The input and output shafts, therefore are only transmitting torque. In a parallel shaft gear the internal forces are not balanced and the shaft must therefore support the internal loads. In planetary gear internal forces are balanced it is therefore possible to have higher external radial loads on the shaft.

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