Series EPN3: 3 Stage Planetary Gearbox

Output speed 0.425‐445 r/min
Ratio range 39.71-456.44
Input power 0.25‐55KW
Mounting position all positions
Mounting dimensions Standard /custom
Reduction ratio I>3
Permit torque range ≤ 540000N. M


Series EPN3: 3 Stage Planetary Gearbox

3-stage planetary gearboxes (EPN3 series) are available in a wide range of low-speed shaft designs, such as cylindrical shafts with keys, splined shafts, hollow shafts with shrink disc, or splined hollow shafts.
Each three-stage planetary gearbox has a high capacity output bearing. Therefore, all our 3-stage planetary gearboxes guarantee high axial and radial capacity. In addition, they resist tilting moments, thereby increasing the reliability and efficiency of the transmission.
Be a quality-conscious planetary gearbox manufacturer; all our 3-stage planetary gearboxes have tooth profiles precision machined to ensure low noise operation.
We will machine it to your specifications if you need a flange, foot, or shaft mounting solution. Likewise, each gearbox part goes through a rigorous quality inspection before being shipped.
Using the planetary gear calculator, you can choose from various speed and torque outputs. Our 3-stage planetary gearboxes have a modular design for easy customization.
In addition, each 3-stage planetary gearbox has solid and stable support. This ensures a high torsional rigidity for each gearbox.

Key Features
  • Modular design, combined according to customer requirement
  • Heavy bearing, Design for heavy-duty Application
  • Hardened gearing, long life 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 39.71-456.44 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 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


EPN 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