China Standard Nmrv Series Hollow Shafr Gearbox automatic gearbox

Product Description

Quick Details
Gearing Arrangement:    Worm                                                                                                                 Brand Name:                  CHINAMFG
Input Speed:                     1400 rpm                                                                                                          Output Speed:                14 rpm to 186 rpm
Rated Power:                    0.06 ~ 4KW                                                                                                      Output Torque:               2.6-479N.M
Color:                                 Blue/Silver or on request                                                                               Origin:                              ZHangZhoug, China (Mainland)         
Warranty:                           1 Year                                                                                                                Application:                    Industry    
Supply Ability
Supply Ability:                   20000 Piece/Pieces per Month
Extra Service:                    OEM is welcome         
QC System:                        ISO9001:2008
Packaging & Delivery
Package:                            Wooden box/Paper carton    
Port:                                    HangZhou/ZheJiang  or on request     


TYPE Worm Gear Speed Reducer/Worm Gearbox
MODEL NMRV series size:571,030,040,050,063,075,090,110,130,150
RATIO 5,7.5,10,15,20,25,30,40,50,60,80,100
COLOR Blue(RAL5571)/Silver grey (RAL9571) or on your request
MATERIAL Housing:Aluminum alloy
PACKING Wooden box/Paper carton  
USAGES Foodstuffs, Ceramics, Packing, Chemicals, Pharmacy, Plastics, Paper-making, Machine-tools
IEC FLANGE IEC standard flange or on request
LUBRICANT Shell or Henry


About CHINAMFG since 1984
HangZhou Melchizedek Import & Export Co., Ltd. is a leader manufactur in mechanism field and punching/stamp
ing field since 1984. Our main product, NMRV worm gear speed reducer and series helical gearbox, XDR,
XDF, XDK, XDShave reached the advanced technique index of the congeneric European and Janpanese produc
ts, We offer standard gears, sprockets, chains, pulleys, couplings, bushes and so on. We also can accept orders
of  non-standard products, such as gears, shafts, punching parts ect, according to customers’ Drawings or sam-

Our company has complete set of equipment including CNC, lathes, milling machines, gear hobbing machine, g-
ear grinding machine, gear honing machine, gear shaping machine, worm grinder, grinding machines, drilling m-
achines, boringmachines, planer, drawing benches, punches, hydraulic presses, plate shearing machines and s-
o on. We have advanced testing equipments also. 

Our company has established favorable cooperation relationships with sub-suppliers involving casting, raw mat-
erial, heat treatment, surface finishing and so on.

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Application: Motor, Machinery, Agricultural Machinery
Hardness: Hardened Tooth Surface
Installation: as for Request
Layout: as for Request
Gear Shape: Worm
Step: Single-Step


Customized Request

pulley gearbox

How do pulley gearboxes contribute to optimizing the efficiency of conveyor systems?

Pulley gearboxes play a crucial role in optimizing the efficiency of conveyor systems, which are widely used in industries for material handling and transportation. By providing speed control, torque multiplication, and efficient power transmission, pulley gearboxes offer several benefits that contribute to the overall efficiency of conveyor systems. Here’s a detailed explanation of how pulley gearboxes optimize conveyor system efficiency:

Speed Control: One of the key advantages of pulley gearboxes in conveyor systems is their ability to control the rotational speed of the conveyor belt. By adjusting the pulley sizes or changing the gear ratio, the speed of the conveyor belt can be precisely regulated to match the specific requirements of the application. This speed control capability allows for optimal material handling, preventing unnecessary energy consumption or strain on the system. For instance, in situations where lighter loads or delicate materials are being transported, the speed can be reduced to avoid excessive impact or spillage. On the other hand, for heavy loads or time-sensitive operations, the speed can be increased to maximize productivity. By adapting the speed to the specific needs of the material and operation, pulley gearboxes optimize the efficiency of conveyor systems.

Torque Multiplication: Pulley gearboxes are designed to provide torque multiplication, allowing higher torque to be delivered at the output pulley compared to the input pulley. This torque multiplication capability is particularly beneficial in conveyor systems that handle heavy loads or encounter resistance during operation. By multiplying the torque, pulley gearboxes enable the conveyor system to overcome these challenges more effectively, reducing the risk of belt slippage or motor overload. The increased torque also allows for the use of smaller and more efficient motors, contributing to energy savings and improved efficiency. Torque multiplication provided by pulley gearboxes ensures that the conveyor system operates at its optimal performance level, enhancing overall efficiency.

Efficient Power Transmission: Pulley gearboxes utilize belts or chains to transmit power from the input pulley to the output pulley. These flexible power transmission elements offer several advantages for conveyor systems. Firstly, they absorb vibrations and dampen shocks, reducing the impact on the system components and improving overall reliability. Secondly, belts or chains allow for slight misalignments and flexibility in the conveyor system, compensating for variations and ensuring smooth operation. Furthermore, the use of belts or chains helps to minimize noise generation during operation. Overall, the efficient power transmission provided by pulley gearboxes ensures minimal power losses and maximizes the energy transfer to the conveyor belt, optimizing the efficiency of the system.

Load Matching: Conveyor systems often encounter variations in load conditions, with different weights and types of materials being transported. Pulley gearboxes enable load matching by allowing for the adjustment of speed and torque output to match the specific load requirements. By selecting the appropriate pulley sizes or gear ratios, the pulley gearbox can be optimized to deliver the necessary speed and torque for efficient material handling. This load matching capability ensures that the conveyor system operates at its most efficient point, minimizing energy losses and reducing power consumption. It also helps to prevent unnecessary wear and tear on the system components, prolonging their lifespan and reducing maintenance requirements.

System Integration: Pulley gearboxes are integrated components within conveyor systems, designed to work seamlessly with other system elements. This integration allows for efficient power transfer and synchronization between the motor, pulleys, and conveyor belt. The proper selection and sizing of pulley gearboxes, along with other components such as motors, bearings, and belts, contribute to the overall efficiency of the conveyor system. By ensuring that all system elements work together harmoniously, pulley gearboxes optimize the performance and energy consumption of the conveyor system as a whole.

Maintenance and Reliability: Efficient maintenance practices and reliable operation are crucial for optimizing the efficiency of conveyor systems. Pulley gearboxes are designed to be durable and require minimal maintenance. Regular inspection and lubrication of the gearboxes help ensure smooth operation and minimize friction losses. Additionally, pulley gearboxes are often equipped with features such as seals and guards to protect against contaminants and prevent premature wear. By maintaining the reliability and performance of the pulley gearboxes, conveyor systems can operate at their highest efficiency, reducing downtime and optimizing productivity.

In summary, pulley gearboxes contribute to optimizing the efficiency of conveyor systems by providing speed control, torque multiplication, efficient power transmission, load matching, and seamless integration with other system components. By leveraging these advantages, conveyor systems can operate at their optimal performance levels, minimizing energy consumption, reducing downtime, and maximizing productivity.

pulley gearbox

What maintenance practices are essential for prolonging the lifespan of pulley gearboxes?

Maintaining proper maintenance practices is crucial for prolonging the lifespan and ensuring the reliable operation of pulley gearboxes. Regular maintenance helps prevent premature wear, reduces the risk of breakdowns, and maximizes the efficiency of the gearbox. Here are some essential maintenance practices to consider for prolonging the lifespan of pulley gearboxes:

  • Regular Inspection: Conduct regular visual inspections of the pulley gearboxes to identify any signs of wear, damage, or misalignment. Inspect the pulleys, belts or ropes, bearings, and other components for cracks, excessive wear, or loose connections. Detecting and addressing issues early can prevent further damage and extend the lifespan of the gearbox.
  • Lubrication: Proper lubrication is vital for the smooth operation and longevity of pulley gearboxes. Follow the manufacturer’s recommendations for lubrication intervals and use the appropriate lubricant. Ensure that all lubrication points, such as bearings and shafts, are adequately lubricated. Regularly check the lubricant levels and replace or replenish the lubricant as needed.
  • Belt or Rope Maintenance: If the pulley gearbox utilizes belts or ropes, pay attention to their condition and tension. Inspect the belts or ropes for signs of wear, fraying, or stretching. Adjust the tension according to the manufacturer’s guidelines to prevent slippage and ensure proper power transmission. Replace worn-out or damaged belts or ropes promptly to maintain optimal performance.
  • Bearing Maintenance: Bearings play a critical role in the smooth operation of pulley gearboxes. Regularly inspect the bearings for signs of wear, overheating, or noise. Monitor the bearing temperature using appropriate tools and ensure it remains within the manufacturer’s recommended range. Clean the bearings if necessary and replace them when they reach the end of their service life.
  • Alignment and Belt Tracking: Check the alignment of the pulleys periodically to ensure they are properly aligned. Misaligned pulleys can lead to increased wear, noise, and reduced efficiency. Adjust the alignment as needed to maintain optimal power transmission. Additionally, verify that the belts or ropes are tracking correctly on the pulleys to prevent unnecessary wear and belt slippage.
  • Cleaning: Keep the pulley gearboxes clean and free from dirt, debris, and contaminants. Regularly remove any buildup or foreign particles that may affect the performance or cause damage. Use appropriate cleaning methods and avoid excessive moisture during cleaning to prevent corrosion or other adverse effects on the gearbox components.
  • Temperature Monitoring: Monitor the operating temperature of the pulley gearboxes to ensure they remain within the recommended range. Excessive heat can accelerate wear and reduce the lifespan of the gearbox components. Install temperature sensors or use thermal imaging techniques to monitor the temperature and take corrective actions if needed, such as improving cooling or ventilation.
  • Record Keeping: Maintain detailed records of maintenance activities, including inspections, lubrication schedules, repairs, and component replacements. This documentation helps track the maintenance history of the pulley gearboxes, identify recurring issues, and plan future maintenance tasks effectively. It also provides valuable information for troubleshooting and warranty claims, if applicable.

Following these maintenance practices and adhering to the manufacturer’s guidelines will help prolong the lifespan of pulley gearboxes. Regular inspections, proper lubrication, belt or rope maintenance, bearing maintenance, alignment checks, cleaning, temperature monitoring, and record keeping contribute to the reliable and efficient operation of the gearboxes over an extended period.

pulley gearbox

What is a pulley gearbox and how does it function in mechanical systems?

A pulley gearbox, also known as a pulley system or pulley transmission, is a mechanical device that utilizes pulleys and belts or ropes to transmit power and torque between rotating shafts. It functions by changing the speed and direction of rotation while maintaining a constant power output. Here’s a detailed explanation of the pulley gearbox and its functioning in mechanical systems:

Definition and Components:

A pulley gearbox consists of several components, including pulleys, belts or ropes, and a tensioning mechanism. The pulleys are circular wheels with grooves along their circumference to hold the belts or ropes. The belts or ropes are flexible elements that wrap around the pulleys, forming a loop. The tensioning mechanism ensures proper tension in the belts or ropes to prevent slippage and ensure efficient power transmission.

Speed and Torque Conversion:

The primary function of a pulley gearbox is to convert the speed and torque between two rotating shafts. This is achieved by using pulleys of different sizes. The size of a pulley is determined by its diameter. The larger the diameter of a pulley, the slower it rotates, and vice versa. By connecting pulleys of different sizes with belts or ropes, the rotational speed can be increased or decreased, allowing for speed conversion in the mechanical system.

When the driving pulley (connected to the input shaft) has a smaller diameter than the driven pulley (connected to the output shaft), the speed is increased, but the torque is reduced. This configuration is referred to as an speed increaser or speed-up pulley system. Conversely, when the driving pulley has a larger diameter than the driven pulley, the speed is decreased, but the torque is increased. This configuration is referred to as a speed reducer or speed-down pulley system.

Multiple Pulley Configurations:

Pulley gearboxes can be designed with multiple pulleys and belts or ropes to create more complex speed and torque conversion systems. These configurations can involve additional intermediate pulleys and idler pulleys to redirect the belt or rope path. By combining pulleys of different sizes and arranging them in various configurations, the pulley gearbox can achieve specific speed and torque ratios to suit the requirements of the mechanical system.

Advantages and Applications:

The pulley gearbox offers several advantages in mechanical systems:

  • Simplicity: Pulley gearboxes are relatively simple in design and construction, making them cost-effective and easy to manufacture.
  • Smooth Operation: The use of belts or ropes in the pulley system helps absorb shocks and vibrations, resulting in smoother operation and reduced noise.
  • Adjustability: The speed ratio of a pulley gearbox can be easily adjusted by changing the sizes of the pulleys, allowing for flexibility in adapting to different operational requirements.
  • Non-slip Power Transmission: The friction between the belts or ropes and the pulleys ensures efficient power transmission without slippage, even under varying load conditions.
  • Compact Size: Pulley gearboxes can be designed in compact sizes, making them suitable for applications where space is limited.

Pulley gearboxes find applications in various mechanical systems, including conveyor systems, industrial machinery, agricultural equipment, automotive accessories, exercise machines, and more. They are particularly useful in situations where speed and torque conversion, adjustability, and smooth power transmission are required.

China Standard Nmrv Series Hollow Shafr Gearbox   automatic gearbox	China Standard Nmrv Series Hollow Shafr Gearbox   automatic gearbox
editor by CX 2024-03-12

pulley gearbox

As one of leading pulley gearbox manufacturers, suppliers and exporters of mechanical products, We offer pulley gearbox and many other products.

Please contact us for details.

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