90mm Square Flange 10:1 Servo Motor High Torque Planetary Automation Gearbox

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Planetary GearBoxes

The reducer is typically utilized for transmissions with high-torxque or low-speed equipment. The internal combustion engine, motor or any other running power with a high speed is utilized to accomplish the goal of deceleration through joining with the massive gear that is on the output shaft. This is done by an gear that has a tiny amount of teeth located on the shaft that feeds the reducer. The reducer also has multiple gears that operate on similar principles to create the optimal reduction effect. Ratio of number of teeth in the small and large gears determines the transmission ratio.

SPLF90-90mm Planetry Gearbox for Servo Motor L1 4 80
5 90
7 60
10 39
Adapted motor ∅ 19-40/ ∅70-3/90-M6
Rated Input Speed (rpm) 3000/min
Max Input Speed (rpm) 6000/min
Backlash L1 ≤10 Arcmin
L2 ≤15 Arcmin
Fault stop torque(N.m) 2 times of rated torque
Efficiency L1 96%
L2 94%
Average life span 20000h
Operating temperature -10°~+90°
Nosie ≤60 db
Weight (kg) L1 3.5
L2 4.5

Planetary GearBoxes Image


What Are Planetary Gearboxes?

Planetary gearboxes are a common type of industrial gearbox used in many industries. They provide a high level of efficiency, delivering higher transmission ratios than other types of gearboxes.

They are also lightweight, and have a higher torque transmitting capacity than other types of gearboxes. This allows them to be a better fit for applications that require a large amount of power with smaller construction space.

High Efficiency

Planetary gearboxes have a high power density because they use multiple gears to share the load. This increases their efficiency and makes them ideal for applications that need to quickly transfer energy.

Another advantage of planetary gearboxes is their compact design. These gearboxes weigh up to 50% less than traditional gears, which reduces installation costs and ensures efficient and reliable performance.

They also have a wide range of speed ratios and are able to accurately vary the amount of torque and power transmitted. This allows them to be used in a variety of applications and environments.


High Torque

The high torque of planetary gearboxes is attributed to the large number of planet gears sharing the load, which allows them to transfer more energy per unit volume than traditional parallel axis gearboxes.

A typical planetary gear arrangement uses three shafts - the sun gear, the planet carrier and an outer ring gear. The sun gear drives the planetary gears, which turn in a ratio determined by the number of teeth in each gear.

In this example, the sun gear has 24 teeth, and each planet gear has 16 teeth. Thus, the ratio is -+24/ 16 or -+3/ 2 ; one clockwise turn of the sun gear produces 1.5 counterclockwise turns of each planet gear about its axis.

High Precision

Planetary gearboxes are widely used in a variety of applications that require high precision. They can be configured to deliver precise amounts of torque within a small footprint, making them an ideal choice for applications where space is limited and accuracy is paramount.

They can also be combined with other components to form function packages that are compact, performing and robust. This makes them ideal for a wide variety of motion control projects, such as robotic arms and pipe bending machines.

Planetary gearboxes are designed with the highest torsional rigidity and lowest backlash. This enables them to provide maximum power output with minimum torque loss and noise.


Planetary gearboxes are characterized by high efficiency; they also have a high power density compared to other types of gear due to their compact construction. The use of an external ring gear in particular reduces the volume and mass of this type of gear, which allows for high torque transmission in small construction spaces.

Planet gears are usually made of metal materials to improve their longevity and durability. These gears can be used for a variety of applications including forestry equipment, debarking machinery, sawing applications, pulp washers, vacuum filters, and more.

Just like any other gear or mechanical component in a vehicle, planetary gears need lubrication to function smoothly and prevent wear and damage. This lubrication typically includes oil, grease or a synthetic gel to ensure the gears perform properly and protect against wear. It also provides cooling and reduces noise or vibration.


Low Noise

Planetary gearboxes are a great choice for many industrial applications because of their low noise. This type of gearbox is also compact and can transmit high torque in a simple design.

They can be used in a variety of applications, including automation devices driven by servo motors. These types of gearboxes are available in a wide range of ratios and can be customized to meet specific needs.

Unlike helical gearboxes, planetary gearboxes are designed with multiple teeth meshing at the same time to increase efficiency. This design means that the power distribution is more efficient, which allows more torque to be transmitted.