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China NGW Planetary Gear Speed Reducer - Factory Direct from Top Suppliers for Mining and Metallurgy
Product Features
- 1 Compact structure, high power transmission capacity, and strong load-bearing capacity.
- 2 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.
- 3 Large transmission ratio.
- 4 Various assembly types, allowing multi-directional installation, and wide applicability.
- 5 The material, gear accuracy, and load-bearing capacity are all at an advanced level among similar products.
Conditions of Use
- ▶ The maximum speed of the input shaft of the reducer shall not exceed 1500 r/min.
- ▶ The peripheral speed of the gear shall not exceed 10 m/s.
- ▶ 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
NGW Single-stage (NGW11–NGW121), two-stage (NGW42–NGW122), and three-stage (NGW73–NGW123) series.
NGW-S Two-stage (S42–S122) and three-stage (S73–S123) series.
NGW-L Single-stage (L11–L71) and two-stage (L42–L122) series.
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. First operate at no-load for 2 hours. Once no-load operation is normal, begin the load test by gradually increasing the load.
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 must not exceed 1500 r/min. Exceeding this limit may result in overheating, increased wear, and potential damage to the reducer components.
Q
What transmission efficiency can the NGW reducer achieve?
The NGW reducer offers high transmission efficiency: single-stage achieves 0.97–0.98, two-stage achieves 0.94–0.96, and three-stage achieves 0.91–0.94, making it suitable for energy-efficient applications.
Q
Can the NGW planetary reducer be used in cold environments?
Yes. The reducer is designed to operate in environments ranging from -40℃ to 45℃. However, if the ambient temperature is below 0℃, the lubricating oil must be preheated to above 0℃ before starting the machine.
Q
What are the available model series for the NGW planetary reducer?
The NGW series includes three model lines: NGW (single, two, and three-stage), NGW-S (two and three-stage), and NGW-L (single and two-stage), covering a wide range of gear ratios and application requirements.
Q
How should the reducer be properly installed?
The reducer must be installed horizontally without any longitudinal or lateral tilt. Connections should use hot mounting and cold shrinking methods. Forced striking or impact assembly is strictly prohibited to avoid internal damage.
Q
Is a break-in or test run required before formal operation?
Yes. Before formal use, the reducer must first run at no-load for 2 hours. Once no-load operation is confirmed normal, a load test should be performed by gradually increasing the load to ensure safe and stable operation.