planetary gear unit flender

P series Heavy Duty Planetary Gear Units

FLK P series heavy duty planetary gear reducer can be combined with K, R, S and other series according to requirements with modular design. The planetary gearbox size is highly flexible and offers a wide range of options. Compact structure and high torque, suitable for heavy duty conditions. The gearbox has the features of high transmission ratio, high efficiency, smooth rotation, low noise and good applicability. Multiple planetary wheels transmit loads at the same time, so that the power is shunted and the synthesis and decomposition of motion is realized.


  • Modular design, variable combination with other Series as required
  • Housing material: nodular cast iron, better rigidity and better anti-vibration capability.
  • Carburize-hardening of sun, planet, pinion and bevel gears to achieve high rigidity and good wear resistance, all teeth ground after heat treatment, thus noise reduced and the gear units efficiency and lifetime enhanced.
  •  Input Mode: Coaxial input, helical gear input, bevel-helical gear input.
  • Output mode: Internal involute spline, hollow shaft with shrink disk, external involute spline, solid shaft with flat key.
  • Mounting mode: Horizontal vertical, torque-arm.
  • P series size:9~34, transmission stage:2 stage and 3 stage, Ratio:25~4000, ratio will be larger in combination with K,R, series.

Product Form

  • Transmission Stage: 2 stage, 3 stage.
  • Input Form: N – Standard (coaxial), S – Helical gear stage, L – Bevel gear stage, K – Bevel-helical gear stage
  • Output Form: A – Hollow shaft output with locking plate, B – Solid shaft output with flat key, C – Hollow shaft output with involute Spline, D – Solid shaft output with involute spline

Technical Data

  • Size: P2/09~P2/34, P3/09~P3/34
  • Technical Data(kN·m): 22~1920
  • Gear Ratio: 25~4000
  • Input Power(kW):0.4~9551

Type and Designation (Planetary Gear Units)


Planetary Gearbox type designation


FLENDER standard Planetary Gearbox type designation

Mounting Position (Planetary Gear Units)

P series planetary gearbox mounting position

MODULAR DESIGN (Planetary Gear Units)

China manufacturer of planetary Gearmotors modular desgin

Product pictures (Planetary Gear Units)

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The products are widely used in light industry, food, beer and beverage, chemical industry, escalators, automatic storage equipment, construction, machinery, iron and steel metallurgy, paper-making, wood-based panel machinery, automobile manufacturing, tobacco machinery, water conservancy, printing and packaging, pharmaceutical, textile, building materials, logistics, feed machinery, environmental protection and other fields.

For any information, inquiries or questions, please do not hesitate to contact us. FLK drive is always at your service.

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