China wholesaler Conveyor Pulley Drum for Stone Crusher Head Driving Pulley idler pulley

Product Description


    Conveyor roller is an important component, types and large quantities. It accounts for the total cost of a conveyor 35%, to withstand more than 70% of the resistance, so the quality of roller is particularly important. 
Our roller has Minimal rtating inertia, reasonable structure, reliable tightness, flexible rotating, simple dismounting, easy maintained, long operational life, etc. Also we can do as customer request.

There are many kinds of roller specifications, different pipe thickness, different length, and different prices.Please consult the customer service or call for more information before the shooting.

Carrying, return

2.Conveyor type:

Used in coal mine, power plant, cement plant, port and so on


Standard Diameter Length Scope(mm) Bearings Type(Min-Max) Pipe Thickness
mm Inch
63.5 2 1/2 150-3500 6204 2.0mm-3.75mm
76 3 150-3500 6204 205 2.0mm-4.0mm
89 3 1/3 150-3500 6204 205 2.0mm-4.0mm
102 4 150-3500 6204 205 305 2.5mm-4.0mm
108 4 1/4 150-3500 6204 205 305 306 2.5mm-4.0mm
114 4 1/2 150-3500 6205 206 305 306 2.5mm-4.5mm
127 5 150-3500 6204 205 305 306 2.5mm-4.5mm
133 5 1/4 150-3500 6205 206 207 305 306 2.5mm-4.5mm
140 5 1/2 150-3500 6205 206 207 305 306 3.5mm-4.5mm
152 6 150-3500 6205 206 207 305 306 307 308 3.0mm-4.5mm
159 6 1/4 150-3500 6205 206 207 305 306 307 308 3.0mm-4.5mm
165 6 1/2 150-3500 6207 305 306 307 308 3.5mm-6.0mm
177.8 7 150-3500 6207 306 35718 309 3.5mm-6.0mm
190.7 7 1/2 150-3500 6207 306 35718 309 4.0mm-6.0mm
194 7 5/8 150-3500 6207 307 308 309 310 4.0mm-6.0mm
219 8 5/8 150-3500 6308 309 310 4.0mm-6.0mm

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Material: Carbon Steel Q235
Application: Chemical Industry, Grain Transportation, Mining Transport, Power Plant, Quarry
Structure: Variable Groove Angle Roller
Bearing Type: Double Sealed Bearing
Type: Grooved Conveyor Idler
Pipe Diameter: 89mm
US$ 0.01/Piece
1 Piece(Min.Order)

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Customized Request

variable pulley

How do variable pulleys contribute to energy efficiency in industrial processes?

Variable pulleys play a significant role in enhancing energy efficiency in industrial processes. By providing precise control over speed and load adaptation, variable pulleys offer several benefits that contribute to reducing energy consumption and optimizing overall efficiency. Here are some ways in which variable pulleys contribute to energy efficiency:

  1. Optimized power transmission: Variable pulleys efficiently transmit power from the input shaft to the output shaft, minimizing energy losses. By adjusting the position of the pulley’s movable flanges, the effective diameter of the pulley changes, allowing for optimal power transmission based on the load requirements. This efficient power transmission reduces energy waste and ensures that the machinery operates at its optimum power efficiency.
  2. Speed control: One of the primary advantages of variable pulleys is their ability to control the speed of machinery. By adjusting the pulley’s effective diameter and changing the speed ratio between the input and output shafts, operators can match the speed of the machinery to the specific requirements of the process. This prevents over-speeding or under-speeding of the equipment, resulting in energy savings by avoiding unnecessary power consumption.
  3. Load adaptation: Variable pulleys allow machinery to adapt to varying load conditions. By adjusting the pulley’s setting, operators can vary the torque and speed output of the system to match the requirements of the load. This load adaptation ensures that the machinery operates at the most efficient operating point, minimizing energy waste and improving overall energy efficiency.
  4. Efficient process control: Variable pulleys enable precise adjustments in speed and torque, providing better control over industrial processes. This control allows operators to optimize the process parameters based on energy efficiency considerations. For example, in applications where a slower speed can achieve the desired outcome, operators can adjust the pulley settings accordingly, reducing energy consumption while maintaining process effectiveness.
  5. Reduced mechanical losses: Variable pulleys help minimize mechanical losses in industrial processes. By avoiding fixed-speed operation and using variable speed control, the machinery can avoid unnecessary friction and wear associated with running at higher speeds than required. This reduction in mechanical losses contributes to energy efficiency and can extend the lifespan of the equipment.
  6. Energy recovery: In certain industrial processes, variable pulleys can enable energy recovery systems. For example, in applications where the machinery produces excess energy during certain phases, variable pulleys can be adjusted to recover and utilize that energy elsewhere in the process. By capturing and reusing this energy, overall energy consumption can be reduced, leading to improved energy efficiency.

The precise control and load adaptation capabilities of variable pulleys make them valuable tools in optimizing energy efficiency in industrial processes. By reducing energy waste, enhancing process control, and minimizing mechanical losses, variable pulleys contribute to significant energy savings and promote sustainable industrial operations.

variable pulley

Can variable pulleys be used in both industrial and DIY applications?

Yes, variable pulleys can be utilized in both industrial and DIY (Do-It-Yourself) applications. The versatility and adjustability of variable pulleys make them suitable for a wide range of uses, from large-scale industrial machinery to smaller DIY projects. Here’s a closer look at how variable pulleys are applicable in both contexts:

Industrial Applications:

In industrial settings, variable pulleys are commonly employed in various types of machinery and equipment for speed control and power transmission. Some notable industrial applications of variable pulleys include:

  • Conveyor Systems: Variable pulleys are used in conveyor systems to adjust the speed of the conveyor belts, allowing for efficient material handling and sorting processes.
  • HVAC Systems: Variable pulleys can be found in heating, ventilation, and air conditioning (HVAC) systems to regulate fan speeds and control airflow, optimizing energy efficiency and comfort.
  • Machine Tools: Variable pulleys are utilized in machine tools such as lathes, milling machines, and drill presses, enabling operators to adjust the rotational speed for different machining operations.
  • Automotive Industry: Variable pulleys are employed in automotive applications, such as continuously variable transmissions (CVT), where they allow for seamless speed adjustments and improved fuel efficiency.
  • Industrial Mixers and Agitators: Variable pulleys are used in mixers and agitators to control the rotational speed of blades or paddles, ensuring proper mixing and blending of materials.

DIY Applications:

In DIY applications, variable pulleys can be utilized by hobbyists, enthusiasts, and individuals working on personal projects. Some common DIY applications of variable pulleys include:

  • Power Tools: DIY enthusiasts often incorporate variable pulleys into homemade power tools, such as belt sanders, drill presses, and grinders, to achieve adjustable speed control.
  • Garden and Yard Equipment: Variable pulleys can be used in DIY projects involving garden and yard equipment, such as lawnmowers or leaf blowers, to adjust the speed of the cutting blades or the airflow.
  • Small Machinery: Variable pulleys can be applied in DIY projects involving small machinery, such as mini lathes or mini milling machines, allowing users to customize the rotational speed for specific tasks.
  • Experimental Setups: Variable pulleys can be incorporated into DIY experimental setups or scientific projects where adjustable speed control is required, such as in physics experiments or mechanical demonstrations.

The adaptability of variable pulleys makes them suitable for a wide range of applications, both in industrial and DIY contexts. Whether it’s for large-scale industrial machinery or small-scale personal projects, variable pulleys provide a flexible and efficient means of achieving adjustable speed control and power transmission.

variable pulley

What are the advantages of using variable pulleys in various systems?

Variable pulleys, also known as variable speed pulleys or variable drive pulleys, offer several advantages when incorporated into various mechanical systems. Here are some key advantages of using variable pulleys:

1. Adjustable Speed Ratios:

One of the primary advantages of variable pulleys is their ability to provide adjustable speed ratios. By changing the position of the movable pulley half, the effective diameter of the pulley system can be altered, resulting in different speed ratios between the input and output shafts. This feature allows for precise and continuous speed adjustment without the need for manual gear changes or transmission adjustments. It enables systems to operate at optimal speeds for different conditions and tasks, enhancing efficiency and performance.

2. Smooth and Seamless Transitions:

Variable pulleys facilitate smooth and seamless transitions between different speed ratios. The actuation mechanism associated with the variable pulley allows for controlled movement of the movable pulley half, ensuring gradual adjustments in the effective diameter. This results in smooth speed changes without sudden jolts or disturbances in power transmission, contributing to overall system reliability and user comfort.

3. Energy Efficiency:

By providing adjustable speed control, variable pulleys contribute to energy efficiency in various systems. They allow the system to operate at the optimal speed for a given task, minimizing energy waste and reducing unnecessary power consumption. For example, in automotive applications, variable pulleys in continuously variable transmissions (CVTs) enable the engine to operate at its most efficient speed, resulting in improved fuel economy and reduced emissions.

4. Flexibility and Adaptability:

Variable pulleys offer flexibility and adaptability in mechanical systems. They can accommodate different load conditions, operational requirements, and variations in input power. By adjusting the position of the movable pulley half, the speed and power transmission characteristics can be tailored to suit specific needs, allowing for optimized performance in diverse applications.

5. Cost-Effective Solution:

Variable pulleys can provide a cost-effective solution compared to other speed control mechanisms. Their simplicity in design and operation often results in lower manufacturing, installation, and maintenance costs. Additionally, the ability to adjust speed ratios without requiring complex gear systems or transmission components can reduce overall system complexity and associated costs.

6. Precise Speed Control:

Variable pulleys offer precise speed control in mechanical systems. The fine adjustments in the effective diameter allow for accurate speed setting, enabling systems to meet specific speed requirements with high precision. This is particularly advantageous in applications where precise speed synchronization, timing, or regulation is critical.

7. Reduced Mechanical Stress:

The ability to adjust speed ratios using variable pulleys can help reduce mechanical stress on system components. By optimizing the speed and torque characteristics, variable pulleys can minimize undue strain on belts, bearings, gears, and other transmission elements. This can result in extended component life, reduced maintenance, and improved overall system reliability.

These advantages make variable pulleys a valuable component in various systems, including automotive transmissions, manufacturing machinery, HVAC systems, exercise equipment, and power transmission systems. Their ability to provide adjustable speed ratios, smooth transitions, energy efficiency, and precise control contributes to enhanced performance, flexibility, and cost-effectiveness.

China wholesaler Conveyor Pulley Drum for Stone Crusher Head Driving Pulley   idler pulley	China wholesaler Conveyor Pulley Drum for Stone Crusher Head Driving Pulley   idler pulley
editor by CX


variable pulley

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

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