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NGW Planetary Gear Speed Reducer - Factory Direct from China Suppliers for Reliable Mechanical Applications
★ Product Features
- ✓ Compact structure, high power transmission capacity, and strong load-bearing capacity
- ✓ High transmission efficiency — single-stage transmission can reach 0.97–0.98, two-stage transmission can reach 0.94–0.96, and three-stage transmission can reach 0.91–0.94
- ✓ Large transmission ratio
- ✓ Various assembly types, allowing multi-directional installation, and wide applicability
- ✓ The material, gear accuracy, and load-bearing capacity are all at an advanced level among similar products
⚙ Conditions of Use
- 1 The maximum speed of the input shaft of the reducer shall not exceed 1500 r/min
- 2 The peripheral speed of the gear shall not exceed 10 m/s
- 3 Working environment: -40 to 45℃. If the temperature is below 0℃, the lubricating oil should be preheated to above 0℃ before starting. This reducer can be used for operation in both forward and reverse directions.
📄 Classification of Planetary Reducers
| Model Series | Available Stages & Range |
|---|---|
| NGW | Single-stage (NGW11–NGW121) | Two-stage (NGW42–NGW122) | Three-stage (NGW73–NGW123) |
| NGW-S | Two-stage (S42–S122) | Three-stage (S73–S123) |
| NGW-L | Single-stage (L11–L71) | Two-stage (L42–L122) |
🔧 Installation Precautions for the Reducer
- 1 The reducer should be installed horizontally and must not be tilted longitudinally or laterally.
- 2 The connection installation between the input and output should be carried out using hot mounting and cold shrinking. It is strictly prohibited to use any assembly methods involving forced striking or impact.
- 3 After the reducer is installed, it must rotate freely when turned by hand. The installation error must not exceed the allowable value of the selected coupling.
- 4 All fixed bolts should be tightened evenly without any looseness. When the impact load is high and the machine starts frequently, positioning screws should be installed between the base and the frame.
- 5 Before starting the reducer, it is necessary to add lubricating oil and ensure that the oil level meets the required standard. Under any circumstances, the oil level must not be lower than the minimum position.
- 6 After installation, a load test must be conducted before formal use. Prior to the load test, operate at no-load for 2 hours first. Once no-load operation is normal, gradually increase the load for the load test.
📷 Detail Pictures
❓ Frequently Asked Questions (FAQ)
Q
What is the maximum input shaft speed for the NGW planetary reducer?
The maximum speed of the input shaft of the NGW planetary reducer shall not exceed 1500 r/min. Exceeding this limit may result in overheating, increased wear, or damage to internal components.
Q
What transmission efficiency can be expected from the NGW planetary reducer?
Transmission efficiency varies by stage: single-stage reaches 0.97–0.98, two-stage reaches 0.94–0.96, and three-stage reaches 0.91–0.94. This makes it one of the most efficient gear reduction solutions available.
Q
What are the working temperature limits for the NGW reducer?
The reducer is designed to operate in environments ranging from -40℃ to 45℃. If ambient temperature is below 0℃, the lubricating oil must be preheated to above 0℃ before starting the machine to ensure proper lubrication.
Q
What model series are available for the NGW planetary reducer?
Three model series are available: NGW (single, two, and three-stage), NGW-S (two and three-stage), and NGW-L (single and two-stage). Each series covers a range of size designations to suit different load and ratio requirements.
Q
How should the NGW reducer be installed correctly?
The reducer must be installed on a horizontal surface without longitudinal or lateral tilt. Use hot mounting and cold shrinking for shaft connections — forced striking or impact is strictly prohibited. All bolts must be evenly tightened, and the installation error must not exceed the coupling's allowable value.
Q
Is a break-in or no-load test required before using the reducer under full load?
Yes. Before formal use, the reducer must first run at no-load for 2 hours. Once no-load operation is confirmed to be normal, a load test should be conducted by gradually increasing the load to full operating conditions.