4 Stage Planetary Gearbox
Output speed0.425‐445 r/min
Ratio range140.36-3144.53
Input power0.25‐55KW
Mounting positionall positions
Mounting dimensionStandard /Custom
Reduction ratioi >3
Permit torque range≤ 540000N. M
Series N4: 4 Stage Planetary Gearbox

Our 4 stage planetary gearbox (series N4) features a heavy duty bearing on low-shaft. We have designed it to bear enormous radial load. Thanks to our R&D team who have made it easier for us to develop a 4 stage planetary gearbox with proportionate distribution of torque.

Every SGR 4 stage planetary gearbox is case hardened to guarantee transmission efficiency. Moreover, they come with rigid and nodular cast iron casing, making them durable and reliable even in the adverse working environment.

As a planetary drive manufacturer, apart from the high and reliable performance, load capacity and low speed shaft bearing; all our 4 stage planetary gearboxes produce virtually no noise.

Also, with vast experience on how planetary gearbox works, we are able to attain a wide range of output speeds and torques. You can use a planetary gear ratio formula to determine the best 4 stage planetary gearbox, suitable for your unique applications.

At SGR, you can find customized designs alongside our standard 4 stage planetary gearboxes.

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 range1000 … 540000 NmInputIEC Flange
Mechanical rating (n1 = 1500 min-1)up to 200kWElectric motor
Gear ratios140.36-3144.53Solid input shaft with or without fan cooling – inch or metric dims.
Gear unit versionsApplicable AC motorsIntegral motors and brake motors
Right angle (with bevel gear set)IEC-normalized motors and brake motors
Mounting typeFootSingle and dual speed motors
Flange mountedMain brake featuresDC and AC supply
Torque-armFaster brake reaction through electronically controlled rectifier
Output shaft optionsSolid shaftMain motor optionsThermistors and thermostat sensors
Splined shaftIndependent forced cooling
Female splined shaftLine driver and push-pull incremental encoder
Hollow shaft with shrink disc


N series planetary gearbox torque sheet with models

Gear unit size200201240241280281353/354355400401
Normal output torque
Gear unit size428429445446510542543695810885
Normal output torque
ProductsCatalogue NameSizePublish DateDownload
pdf-30X27Series N planetary gearbox planetary gear reducer planetary transmission - SGRSeries N planetary gearbox4 MBAug 28, 2016download-logo-icon