Series N4: 4 Stage Planetary Gearbox

Output speed 0.425‐445 r/min
Ratio range 140.36-3144.53
Input power 0.25‐55KW
Mounting position all positions
Mounting dimension Standard /Custom
Reduction ratio i >3
Permit torque range ≤ 540000N. M

Series N4: 4-Stage Planetary Gearbox

Our planetary gearboxes with four stages (N4 series) are fitted with high-performance bearings on the shaft that are low. The gearbox was designed to stand up to enormous circular loads. We are grateful for our R&D team, they made it possible for us to create a four-stage gearbox planetary with an equal distribution of torque.

Each planetary gearbox has four stages and is fully case-hardened for reliable transmission. Furthermore, they have strong steel housing made of ductile iron for long-term durability and dependability even in extreme operating conditions.

As a maker of gearboxes for planetary use, we also have access to high-quality performance capacity, load carrying capacity, and shaft bearings with low speeds Our 4-stage gearboxes for planetary are almost quiet.

Furthermore, due to our extensive experience with the workings of planetary gearboxes, they can achieve a variety of torques and output speeds. It is possible to use the formula for planetary gear ratio to identify the ideal 4-stage planetary gearbox for your specific needs.

At our company, you can get custom designs and our standard four-stage gearboxes for planetary applications.


The Key Features

  • Modular design, combined according to the client’s specifications
  • Heavy bearings, designed for heavy-duty use
  • Long-lasting, hardened gearing with high reliability
  • Low-speed shaft design




Torque range 1000 … 540000 Nm Input IEC Flange
Mechanical rating (n1 = 1500 min-1) up to 200kW Electric motor
Gear ratios 140.36-3144.53 Solid input shaft with or without fan cooling – inch or metric dims.
Gear unit versions Applicable AC motors Integral motors and brake motors
Right angle (with bevel gear set) IEC-normalized motors and brake motors
Mounting type Foot Single and dual-speed motors
Flange mounted Main brake features DC and AC supply
Torque-arm Faster brake reaction through an electronically controlled rectifier
Output shaft options Solid shaft Main motor options Thermistors and thermostat sensors
Splined shaft Independent forced cooling
Female splined shaft Line driver and push-pull incremental encoder
Hollow shaft with shrink disc


N series planetary gearbox torque sheet with models

Gear unit size 200 201 240 241 280 281 353/354 355 400 401
Normal output torque
1500 2000 3500 4000 4300 7300 13000 16000 20000 23000
Gear unit size 428 429 445 446 510 542 543 695 810 885
Normal output torque
26000 30000 32000 43000 63000 75000 100000 150000 300000 420000