China Professional CZPT Ngw Series Cast Iron Planetary Wheel Speed Reducer Transmission Gearboxes differential gearbox

Product Description

Product Description

AOKMAN NGW Series Cast Iron planetary wheel speed reducer transmission gearboxes

NGW series gearboxes consist of single-stage(NGW11-NGW121),two-stage(NGW42-NGW122) and stree-stage(NGW73-NGW123).

1.Model Number

NGW Planetary Gear Units is widely used in many areas such as metallurgy, mine, lifting, transportation, textile, cement, light industry, chemical, pharmaceutical, dye printing and so on. 

Detailed Photos

3.Product Characteristics
(1) Small volume, light weight, well-knitted structure, big transmission power and high load capacity. Compared with the ordinary cylindrical gear reducers of the same level, its weight is lower 1/2 and volume is only 1/2-1/3 of the former.
(2) High transmission efficiency. 1-stage is up to 97%, 2-stage 94%, 3-stage 91%.
(3) The range of transmission power is very wide, from 1kw to 1300kw.
(4) NGW Planetary Gear Units is designed with hard-tooth-faced, and can be used widely and in long period.
(5) Big transmission ratio 

4.Technical Data(NGW)
Original Version NGW Series
Shafts Position: In Line
1 Stage: NGW11~NGW121 Ratio: 2.8~12.5
2 Stage: NGW42~NGW122 Ratio: 14~160
3 Stage: NGW73~NGW123 Ratio: 180~2000

New Design NGW Series
Shafts Position: In Line, Parallel Shaft
NAD(NAF) – 1 Stage, Foot Mounted(Flange Mounted), In Line
NAZD(NAZF) – 1 Stage, Foot Mounted(Flange Mounted), Parallel Shaft
NBD(NBF) – 2 Stage, Foot Mounted(Flange Mounted), In Line

Product Parameters

NGW-S Series Planetary Gearboxes
Shafts Position: Right Angle
Gearset: Spiral Bevel Gear Pair Integrated With Planetary Gear Set
2 Stage: NGW-S42~NGW-S122 Ratio: 11.2~80
3 Stage: NGW-S73~NGW-S123 Ratio: 56~500

Stage Model Size                   Ratio Rated Power
Single-stage NGW11~NGW121  1~12 2.8~12.5 2. 8-1314KW
Two-stage NGW42~NGW122  1~12 14-160 0.7-517KW
Three-stage NGW73~NGW123  1~6 180-2000 0.16-47.1KW

Types Sizes Nominal Ratio Input Shaft Dia.(m6) Output Shaft Dia.(n6)
NAD 200,224,…1800,2000 4~5.6




NAF 200,224,…500,560 4~5.6




NAZD 200,224,…1400,1600 10~18 30~240mm 60~560mm
NAZF 200,224,…500,560 10~18 30~85mm 60~220mm
NBD 250,280,…1800,2000 20~25


30~280mm 80~630mm
NBF 250,280,…500,560 20~25


30~80mm 80~220mm
NBZD 250,280,…1400,1600 56~125 28~170mm 80~560mm
NBZF 250,280,…500,560 56~125 28~55mm 80~220mm
NCD 315,355,…1800,2000 112~400 25~150mm 120~630mm
NCF 315,355,…500,560 112~400 25~50mm 120~220mm
NCZD 315,355,…1800,2000 450~1250 20~170mm 120~630mm
NCZF 315,355,…500,560 450~1250 25~45mm 120~220mm

Packaging & Shipping

Company Profile

After Sales Service

Pre-sale services 1. Select equipment model.
2.Design and manufacture products according to clients’ special requirement.
3.Train technical personal for clients
Services during selling 1.Pre-check and accept products ahead of delivery.
2. Help clients to draft solving plans.
After-sale services 1.Assist clients to prepare for the first construction scheme.
2. Train the first-line operators.
3.Take initiative to eliminate the trouble rapidly.
4. Provide technical exchanging.


1.Q:What kinds of gearbox can you produce for us?

A:Main products of our company: UDL series speed variator,RV series worm gear reducer, ATA series shaft mounted gearbox, X,B series gear reducer,
P series planetary gearbox and R, S, K, and F series helical-tooth reducer, more
than 1 hundred models and thousands of specifications
2.Q:Can you make as per custom drawing?
A: Yes, we offer customized service for customers.
3.Q:What is your terms of payment ?
A: 30% Advance payment by T/T after signing the contract.70% before delivery
4.Q:What is your MOQ?
A: 1 Set

If you have any demand for our products please feel free to contact me.

Application: Machinery
Function: Speed Changing, Speed Reduction
Layout: Coaxial
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Step: Double-Step


Customized Request

speed reducer gearbox

Real-World Examples of Products Utilizing Speed Reducer Gearboxes

Speed reducer gearboxes are extensively used in a wide range of products and industries to enhance efficiency and performance. Here are some real-world examples:

  • Automotive Industry: Automatic transmissions in vehicles employ speed reducer gearboxes to optimize engine power delivery to the wheels, ensuring smooth acceleration and efficient fuel consumption.
  • Industrial Machinery: Conveyor systems, packaging machines, and manufacturing equipment often incorporate speed reducer gearboxes to achieve precise motion control, reduce energy consumption, and enhance overall productivity.
  • Wind Turbines: Wind energy generators utilize speed reducer gearboxes to convert the relatively high rotational speed of the turbine blades into the lower speed required by the electrical generator, thus optimizing power generation.
  • Material Handling Equipment: Forklifts, cranes, and elevators use speed reducer gearboxes to amplify torque and control lifting and lowering operations, ensuring safe and efficient material transport.
  • Food Processing: Mixing and blending machines in the food industry rely on speed reducer gearboxes to maintain consistent mixing speeds, improving product quality and reducing processing time.
  • Construction Equipment: Concrete mixers, excavators, and bulldozers utilize speed reducer gearboxes to convert high engine speeds into the low-speed, high-torque output required for heavy-duty tasks.
  • Printing Industry: Printing presses employ speed reducer gearboxes to achieve accurate paper feeding and precise printing, resulting in high-quality output and reduced material wastage.
  • Agricultural Machinery: Tractors, combines, and irrigation systems use speed reducer gearboxes to optimize power distribution, enabling efficient farming operations and reducing fuel consumption.
  • Robotics: Robotic arms and automated machinery incorporate speed reducer gearboxes to achieve precise and controlled movements, enhancing accuracy and repeatability in various industrial processes.

These examples showcase the diverse applications of speed reducer gearboxes across industries, highlighting their crucial role in enhancing operational efficiency, energy utilization, and overall performance of various products and systems.

speed reducer gearbox

Impact of Gear Ratios on Performance of Speed Reducer Gearboxes

Gear ratios in speed reducer gearboxes play a crucial role in determining their performance characteristics and capabilities. The gear ratio represents the ratio of the number of teeth on the driving (input) gear to the number of teeth on the driven (output) gear within the gearbox. This ratio directly affects how the gearbox transforms the input speed and torque into the desired output speed and torque.

Speed Reduction: A higher gear ratio in a speed reducer gearbox results in greater speed reduction. In this case, the input shaft’s higher rotational speed is converted into a lower rotational speed at the output shaft. This is advantageous for applications that require increased torque and reduced speed, such as heavy-duty machinery and conveyor systems.

Speed Increase: Conversely, a lower gear ratio in a speed reducer gearbox leads to speed increase. The input shaft’s rotational speed is transformed into a higher rotational speed at the output shaft, albeit with decreased torque. This configuration is useful in applications where higher speed is necessary, such as certain types of pumps and fans.

The choice of gear ratio is a critical design consideration when selecting a speed reducer gearbox for a specific application. It determines the trade-off between speed and torque, allowing engineers to tailor the gearbox’s performance to match the requirements of the machinery and equipment it will drive.

speed reducer gearbox

Types of Speed Reducer Gearboxes and Their Applications

Speed reducer gearboxes come in various types, each designed to suit specific applications and performance requirements. These gearbox designs leverage different gear arrangements and mechanisms to achieve the desired speed reduction and torque amplification. Here are some common types of speed reducer gearboxes and their applications:

1. Planetary Gearbox: Planetary gearboxes, also known as epicyclic gearboxes, consist of a central sun gear, multiple planet gears, and a ring gear. This compact design allows for high torque output and efficiency. Planetary gearboxes are commonly used in applications requiring high torque and precision, such as robotics, automated machinery, and aerospace systems.

2. Helical Gearbox: Helical gearboxes utilize helical gears with inclined teeth to transmit power. They provide smooth and quiet operation and are suitable for applications that require moderate speed reduction and torque amplification, such as conveyors, pumps, and industrial mixers.

3. Worm Gearbox: Worm gearboxes consist of a worm screw and a worm wheel. They offer high torque output and are known for their self-locking capability, making them ideal for applications where backdriving prevention is essential, such as lifting mechanisms, gates, and heavy machinery.

4. Bevel Gearbox: Bevel gearboxes use bevel gears to transmit power between intersecting shafts. They are suitable for changing the direction of rotation and transmitting power at right angles. Bevel gearboxes are commonly used in printing presses, woodworking equipment, and automotive applications.

5. Cycloidal Drive Gearbox: Cycloidal drive gearboxes use a unique mechanism with cycloidal motion to achieve speed reduction and torque amplification. They are known for their high shock-load resistance and compact design. Cycloidal drive gearboxes find applications in robotics, packaging machinery, and material handling systems.

6. Spur Gearbox: Spur gearboxes utilize straight-cut spur gears for power transmission. They are simple in design and are suitable for low-speed applications that require minimal torque amplification, such as printing machines, textile equipment, and food processing machinery.

7. Hypoid Gearbox: Hypoid gearboxes use hypoid gears that resemble spiral bevel gears. They offer higher torque capacity and smoother operation compared to traditional bevel gearboxes. Hypoid gearboxes are commonly used in automotive drivetrains and heavy-duty machinery.

8. Harmonic Drive Gearbox: Harmonic drive gearboxes use a flexible spline and wave generator to achieve speed reduction and torque amplification. They are known for their high precision and backlash-free operation, making them suitable for applications requiring precise motion control, such as semiconductor manufacturing and medical devices.

Each type of speed reducer gearbox offers unique advantages and characteristics, making them suitable for specific applications across industries. The choice of gearbox type depends on factors such as required torque, speed reduction ratio, space limitations, efficiency, and operational demands.

China Professional CZPT Ngw Series Cast Iron Planetary Wheel Speed Reducer Transmission Gearboxes   differential gearbox	China Professional CZPT Ngw Series Cast Iron Planetary Wheel Speed Reducer Transmission Gearboxes   differential gearbox
editor by CX 2023-11-29