This gearboxes are designed for shaft mounting, introducing specific advantages for this fitting solution, which is widely appreciated in many industrial applications.
This gearboxes come up with a innovative mix of planetary and helical gears. Matching the best features of these technologies Piv Posiplan products turn out to be compact, reliable, easy to assemble and maintain.
The original design strongly reduces weights and dimensions, achieving the same performance and reliability in comparison to helical and bevel-helical traditional gearboxes, thus leading to important advantages, both applicative and economical.
The use of top-quality, highly reliable components, such as the planetary reductions manufactured by Brevini Riduttori S.p.A. topped with the high manufacturing standards adopted for spur gears and bevel gearing ensure consistently high performance over time and long life.
3D design lead us to the generation of 'virtual' prototypes which were analyzed and optimized with FEM (Finite Elements Method) techniques. Each designed size is then submitted to testes on our test benches, simulating the real working condition.

Technical specifications

• Compact design for shaft mounting, with monolithic casing in nodular cast iron GS400-15 (UNI EN 1083)
• Modular design, with many ratio available.
• Gears of the helical stage are case hardened and profile ground. The teeth correction and crowning design guarantee optimum performances under load.
• Gleason bevel gears are case hardened and profile ground or lapped in pairs.
• Planetary gears: ring-gear is nitrided, pinion and planet gears are case hardened with profile ground. Planetary gears are optimized for maximum performance and quiet operation.
• Bearings from the major manufacturers, designed for long life and the maximum efficiency.
• Prevention of lubricant leakages and contamination by means of seals, with the option of labyrinth seals and double seals with separate grease filled chamber.
• Output hollow shafts in alloy steel, available as standard:
  • K: cylindric with feather keyhole
  • D: cylindric hollow shaft for shrink Disc
  • S: splined shaft according DIN 5480/5482
• Many inputs and couplings available:
  • Adaptors for IEC electric motors with splined joint
  • Adaptors for NEMA electric motors with splined joint
  • Adaptors for hydraulic motors
  • Flexible and fluid couplings
  • Clutches and torque limiters
  • Belt couplings
• Many accessories available, both standard and tailor-made:
  • Torque arms
  • Shrink discs
  • Common bed frame
  • Backstops and brakes
  • Auxiliary drives
  • Auxiliary cooling and filtering systems
• High efficiency due to the high quality of gearing and bearing choices
  • efficiency>97% for 2 stages gearboxes
  • efficiency>96% for 3 stages gearboxes
  • efficiency>95% for 4 stages gearboxes