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NGW Planetary Gear Speed Reducer by China Factory - Reliable Suppliers for Mining, Metallurgy, and Lifting Solutions
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
- 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
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NGW Model
Single-stage (NGW11–NGW121), Two-stage (NGW42–NGW122), and Three-stage (NGW73–NGW123) series.
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NGW-S Model
Two-stage (S42–S122) and Three-stage (S73–S123) series.
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NGW-L Model
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. The reducer should first run at no-load for 2 hours. 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?
A
The maximum speed of the input shaft must not exceed 1500 r/min. Exceeding this limit may cause damage to the gear components and reduce the service life of the reducer.
Q
Can the NGW planetary reducer be used in extremely cold environments?
A
Yes, the reducer can operate in environments as low as -40℃. However, if the ambient temperature is below 0℃, the lubricating oil must be preheated to above 0℃ before starting the equipment.
Q
What are the available models and stages of the NGW planetary reducer?
A
The NGW series includes single-stage, two-stage, and three-stage models. Additionally, the NGW-S series covers two-stage and three-stage configurations, while the NGW-L series offers single-stage and two-stage options.
Q
How should the reducer be connected to the input and output shafts during installation?
A
The connection should be made using the hot mounting and cold shrinking method. It is strictly prohibited to use forced striking or impact during assembly, as this can damage the internal components and alignment.
Q
Is a break-in or no-load test required before using the reducer under full load?
A
Yes. Before formal use, the reducer must first run at no-load for 2 hours. Only after confirming normal no-load operation should the load test begin, with the load gradually increased to the rated level.
Q
What transmission efficiency can be expected from the NGW planetary reducer?
A
The NGW planetary reducer offers high transmission efficiency: 0.97–0.98 for single-stage, 0.94–0.96 for two-stage, and 0.91–0.94 for three-stage configurations, making it one of the most efficient options among similar products.