Product Overview
Right-Angle Planetary Gear Reducer
The right‑angle planetary gear reducer combines spiral bevel and planetary gearing for 90‑degree power transfer. It delivers low backlash, high rigidity and high efficiency in compact dimension. Multiple output forms and frame sizes support flexible installation with servo & stepper motors. Ideal for robotics, automation equipment and CNC machinery with space constraints.
key Features
Right-Angle Planetary Gear Reducer
- Features: It adopts a planetary gear system combined with bevel gears/worm gears to achieve 90° right-angle steering, with a compact structure. All components are processed and assembled with high precision, ensuring stable operation.
- Material Introduction: Gears are made of heat-treated chromium-molybdenum alloy steel; shafts are made of quenched and tempered medium carbon steel or alloy structural steel; housings are made of gray cast iron or aluminum alloy.
- Advantages: The right-angle layout is suitable for narrow spaces. The planetary transmission provides high torque output, excellent impact and overload resistance, and a transmission efficiency of over 90%. Meanwhile, multi-tooth meshing and precise assembly ensure low vibration and noise during operation.
- Applications: Suitable for robotic arms and conveying equipment in automated production lines, robot joints, tool magazines and worktables of CNC machine tools, as well as automated equipment such as logistics sorting and stackers.
Application
Logistics and Transportation Industry: In various conveyor systems, adjusting power direction is often necessary to accommodate complex conveying paths. Right-angle commutating reducers can convert the horizontal power from motors into vertical power, driving components like rollers and chains. They are widely used in warehouse sorting lines, port conveying equipment, and similar applications.
Agricultural Machinery Industry: Agricultural equipment like tractors and harvesters feature complex transmission systems, which need to transfer engine power to components in various directions-such as traveling wheels and harvesting parts. Right-angle commutating reducers can adapt to the harsh conditions of fieldwork, efficiently reverse power, and ensure stable equipment operation.
Robot Joints (Shoulder, Elbow, Wrist)： Widely adapted for the rotating joints of six-axis industrial robots, SCARA robots, and collaborative robots, it serves as the core hub for the flexible movement of robotic arms. Its compact right-ngle structure is specifically designed for the confined installation spaces of the shoulder (J2), elbow (J3), and wrist (J4/J5/J6) joints. It converts the high-speed power of servo motors into the robust torque required to drive the joints, making it an indispensable precision transmission component in industrial automation production.
Question
Q: What is a right-angle planetary gear reducer?
A: A right-angle planetary gear reducer (also referred to as right-angle planetary gearbox) is a precision mechanical transmission unit integrating planetary gear drive and 90-degree direction change. It is characterized by input and output shafts arranged at a right angle, and delivers the typical performance advantages of planetary reducers.
Q: What is the difference between a planetary gearbox and a right-angle planetary gearbox?
A: The planetary gearbox features coaxial-parallel layout for its input and output shafts. The right-angle planetary gearbox adds a spiral bevel gear reversing mechanism on the basis of planetary transmission, placing the input and output shafts at a 90-degree perpendicular orientation. It is more suitable for applications with limited space or where a change in transmission direction is required.
Q: How do I calculate the required output torque for the right-angle planetary gear reducer?
A: The output torque equals the input torque multiplied by the reduction ratio, transmission efficiency and service factor.
Q: Which backlash grade shall I select for robotic applications?
A:
| Robot Joint Type | Recommended Backlash Range | Application Scenarios |
|---|---|---|
| Ultra-precision Joint | ≤1 arcmin | Upper limb wrist joints, dexterous hand joints, neck joints |
| High-precision Load-bearing Joint | ≤3 arcmin | Lower limb hip/knee/shoulder/elbow joints, core load-bearing joints |
| General-precision Joint | ≤5 arcmin (single-stage) / ≤8 arcmin (two-stage) | Non-load-bearing joints, collaborative robot extended joints, wheel-legged hybrid robots |
| Low-precision Application | 5-10 arcmin | Mobile robot chassis, AGV drives and other similar applications |
Q: Can the gearbox be customized for different motors?
A: Yes, we support customization for different motor interfaces, including input bore, flange size and keyway.
Q: Can we provide OEM right-angle planetary gearboxes?
A: Yes, OEM services for right‑angle planetary gearboxes are available. We can customize flange, shaft, housing and marking according to your requirements.
Q: What information is required for gearbox selection?
A:
| Parameter Category | Specific Information | Description |
|---|---|---|
| Load Torque | Required Output Torque (N·m) | Calculate based on equipment load, with a safety margin of 1.2-1.5 times reserved |
| Input Speed | Rated Motor Speed (RPM) | Examples: 1500/3000/6000 RPM, etc. |
| Output Speed | Required Equipment Output Speed (RPM) | Used for reduction ratio calculation |
| Reduction Ratio | Input/Output Speed Ratio | Examples: 10:1, 20:1, 50:1, etc. |
| Motor Power | Driving Motor Power (kW) | Examples: 0.4kW, 1kW, 2.2kW, etc. |
| Installation Space | Length × Width × Height (mm) | Available installation dimensions of the equipment |
Q: What is the expected service life of the gearbox?
A: Under normal working conditions with rated load and proper lubrication, the standard service life of our planetary gearboxes can reach over 20,000 hours.
Q: How do we control gearbox precision and backlash?
A: We control gear machining tolerances strictly, adopt matched gear grinding process, implement standardized assembly adjustment and finished product backlash inspection to stably guarantee gearbox precision and backlash index.
Q: What special attention should be paid to load parameters during selection?
A: Due to the force characteristics of the right-angle commutation structure, it is necessary to focus on matching axial, radial loads and impact loads to prevent gear wear caused by uneven force during commutation transmission.
Q: What are the special points in matching rotational speed and reduction ratio?
A: Calculate the reduction ratio based on the motor speed and the required output speed. Meanwhile, ensure the rotational speed during commutation transmission is within the rated range to avoid operational impact caused by efficiency fluctuations at the right-angle turning point.
Q: What is the key to selecting based on installation space?
A: It is necessary to match the radial and axial dimensions of the installation position according to the compactness of the right-angle commutation structure, with particular attention to the space adaptation of horizontal/vertical commutation installation.
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