Rigidity focuses on deformation.
Under load, how much does the shaft bend? How much does the gear meshing clearance increase? Rigidity directly determines a machine’s positioning accuracy and dynamic response.
If rigidity is insufficient, a robot performing precision movements will behave like it has “Parkinson’s disease” — shaking, vibrating, and never accurately reaching its target.
Strength, on the other hand, concerns whether the gearbox will fail.
It relates to the maximum stress the material can withstand and whether components may crack, deform, or collapse. Strength defines the service life and safety margin of the equipment.
Insufficient strength leads to a classic “brute force failure,” where internal components catastrophically break apart.

When selecting a planetary gearbox, focusing only on reduction ratio and price is far from enough. You must also evaluate:
Rated torque – continuous operating capability
Peak torque – ability to withstand shock loads
Service factor – compensation for harsh working conditions
For intelligent equipment with frequent start-stop cycles, peak torque is especially critical.
We can provide professional selection guidance and complete technical documentation. Ultimately, system-level reliability matters more than any single outstanding parameter. True performance depends on design, materials, manufacturing processes, and—most importantly—how well the gearbox matches real operating conditions.

The advantage lies in its structure.
Planetary gearboxes use a planetary gear system consisting of a central sun gear, surrounding planet gears, and an outer ring gear. This configuration enables power splitting and multi-tooth meshing, resulting in:Compact size,Lightweight design,High load capacity,Excellent rigidity.These characteristics make planetary gearboxes particularly suitable for automation equipment with strict space and performance requirements.

Three practical checks can help:Gear material and machining accuracy – ground gears are superior to hobbed gears.No-load backlash and noise – lower backlash and smoother operation indicate better quality.Temperature rise – excessive temperature increase after long-term operation (e.g., above 45°C) may indicate design or manufacturing defects.

Planetary gearboxes offer higher precision and efficiency, making them ideal for reciprocating and high-accuracy motion.Worm gear reducers provide large reduction ratios and self-locking capability, suitable for high-ratio and intermittent load applications, but typically suffer from lower efficiency.

HONPINE planetary gearboxes have been widely applied and market-validated in industries such as:CNC machine tools,Mobile robots,New energy vehicles,Aerospace,Construction machinery,Photovoltaic equipment,3C electronics,Smart home systems,Medical devices.Driven by application demands, HONPINE continues to innovate toward higher precision, lighter weight, and higher power density, steadily positioning itself as an industry leader.

Yes. HONPINE has achieved full in-house R&D and manufacturing of planetary gearboxes.
Key processes—including gear machining, planetary carrier manufacturing, internal ring gear processing, and planet gear production—are all completed within HONPINE’s factory.
By integrating refined gear design, high-precision manufacturing processes, advanced load-sharing technology, and scientifically optimized lubrication, HONPINE systematically improves transmission efficiency and meets the stringent requirements of modern high-end equipment for energy efficiency, reliability, and long service life.

Take robot joints as an example. Servo motors typically operate at 3000–6000 rpm, while robot joints require speeds of only tens of rpm, along with significantly higher torque to drive robotic arms.
Planetary gearboxes convert the motor’s high speed into the low speed required by the joint while multiplying torque dozens of times, ensuring precise positioning and sufficient load capacity.
Similarly, in CNC machine spindle drives and conveyor power transmission systems, planetary gearboxes play a vital role. Their high transmission efficiency (typically 90%–97%) helps reduce energy consumption and enhance overall system stability.

1. Basic Definition
The reduction ratio is the ratio between input speed and output speed:
i = n₁ / n₂
Where:
n₁ = input speed
n₂ = output speed
Example:
If the input speed is 1500 rpm and the output speed is 25 rpm:
i = 1500 / 25 = 60:1

2. Gear Train Calculation Method
For multi-stage gear reducers, divide the number of teeth on the driven gear by that of the driving gear for each meshing pair, then multiply all results together.
Example (Planetary Gear System):
If:
Sun gear teeth = z₁
Planet gear teeth = z₂
Ring gear teeth = z₃
Then the reduction ratio can be expressed as:
i = (z₃ / z₁) × (z₂ / z₁)