China manufacturer Carrier Plastic PE HDPE Belt Imapct Conveyor Idler Nylon Roller Pulley with Great quality

Product Description

Carrier Plastic PE HDPE Belt Imapct Conveyor Idler Nylon Roller Pulley

Product Description


Idler rollers, or sometimes simply known as conveyor rollers, are cylindrical-shaped bars that run along and underneath a conveyor belt. There are many different types of idler rollers with varying functions.

Usually, idler rollers aid in the supporting of weight and impact of the materials being transported along the belt. They also assist in the smooth, continuous movement of the material along the belt.

Idler rollers can be self-aligning and assist in maintaining the belt tracking. Depending on the structure and shape of the conveyor belt, the rollers are usually positioned within a metal frame and are known as idler sets.

Feature 1) for the viscous material transportation 2) cleaning 3) prevent the belt running deviation

Detailed Photos

Product Parameters

Diameter 60-219mm
Length 100-3500mm
Tube Q235(GB)
Shaft 45# steel(GB) equal to C45
Bearing Single & Double Row Deep Groove Ball Bearing 2RZ&2Z wigh C3 clearance
Grease Lithium soap type grease,grease retaining inner seal with Multi-stage Labyrinth and Retention Cap with Outboard Rubbing Flinger
Lubrication Grease is Lithium soap type grease with Rust Inhibitors
Welding Mixed gas shielded arc welding end


Ordinary painting, hot galvanized painting, electric static spraying painting, baked painting


Belt width
Idler E A H1 P Q d Drawing No.
D L Drawing No. Bearing type
800 108 950 DTIIGS2111 4G204 1142 1090 154 145 90 M12 DTII03C2321
1000 133 1150 DTIIGS3212 4G205 1342 1290 176.5 150 M16 DTII04C2332
1200 159 1400 DTIIGS4213 1592 1540 199.5 DTII05C2342
1200 DTIIGS4313 4G305 DTII05C2343
DTIIGS4413 4G306 DTII05C2344
1400 1600 DTIIGS4314 4G305 1800 1740 209.5 DTII06C2343
DTIIGS4414 4G306 DTII06C2344




Packaging & Shipping

Company Profile


ZheJiang CHINAMFG Rubber Products Co., Ltd is a leading professional manufacturer of conveyor belts & conveyor accessories in China. The main workshops cover 20,000 square CHINAMFG in the total 60,000 square CHINAMFG of the plant. The applied technology and equipment in the advanced production lines are state of the art in the industry. The sales headquarters is located in the capital of China, ZheJiang with branches in domestic and abroad.

It specializes in following 3 series: 1) Heavy-duty Conveyor Belt, including universal EP/NN and CC Belt, Chevron Belt, Oil Resistant Belt, Abrasion Resistant Belt, Heat Resistant Belt, Fire Resistant Belt, Chemical Resistant Belt, Sidewall Belt, Flat Transmission Belts, 2) Rubber Sheets, including SBR, NBR, NR, CR, EDPM, Rubber With Insertion 3) Conveyor accessories. These 3 series of products conform to RMA, DIN, ASTM and ISO specifications.

Its products, honored with “The most Advanced level of Products” by the Committee of Science and Technology, have been widely used in mining and quarrying, power stations, steel plants, bulk cargo terminals, cement industry, and other material handling fields. With great success in domestic market, it has been focusing on global market with several hundreds of foreign valued customers in Asia, South America, North America, Africa and Europe.

The company mission:

1.Supply one-stop outstanding service to global customers.
2. Engage in complete solutions with conveyor belting and power transmission belting.
3. Persist in technology improvement and quality control in the whole process of production and service.


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Material: HDPE
Application: Chemical Industry, Grain Transportation, Mining Transport
Structure: Ordinary Roller
Bearing Type: Double Sealed Bearing
Type: Parallel Conveyor Idler
Dimension(L*W*H): Variable
US$ 1/Piece
1 Piece(Min.Order)

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variable pulley

What safety considerations should be kept in mind when working with variable pulleys?

When working with variable pulleys, it is important to keep several safety considerations in mind to ensure the well-being of individuals and prevent accidents. Here are some key safety considerations:

  1. Proper training: Only trained and authorized personnel should operate or work with variable pulleys. They should have a thorough understanding of the equipment, its functions, and the associated hazards. Training should cover topics such as proper usage, maintenance, and emergency procedures.
  2. Equipment inspection: Before using variable pulleys, it is crucial to inspect them for any signs of damage or wear. Check for issues such as frayed cables, loose bolts, or misalignment. If any defects are found, the pulleys should be taken out of service until repairs or replacements are made.
  3. Personal protective equipment (PPE): Workers should wear appropriate PPE, such as safety goggles, gloves, and protective clothing, to prevent injuries from flying debris, pinch points, or accidental contact with moving parts.
  4. Secure footing: Ensure that the work area around the variable pulleys is clean, well-lit, and free from any obstructions. Maintain good footing and position yourself in a stable manner to avoid slips, trips, and falls.
  5. Guarding: Install appropriate guards or barriers around the pulleys to prevent accidental contact with moving parts. This can include safety covers or enclosures that restrict access to the pulleys during operation.
  6. Lockout/tagout: Implement lockout/tagout procedures to control hazardous energy sources when performing maintenance or repairs on variable pulleys. This ensures that the equipment is properly shut down, isolated, and cannot be unintentionally started.
  7. Weight capacity: Always adhere to the weight capacity limits specified by the manufacturer. Overloading the pulleys can lead to equipment failure, loss of control, or structural damage.
  8. Proper use: Follow the manufacturer’s instructions and guidelines for the appropriate use of variable pulleys. Avoid using them for tasks or loads they are not designed for, as this can pose safety risks.
  9. Regular maintenance: Perform routine inspections, cleaning, and maintenance of the variable pulleys as recommended by the manufacturer. This helps identify potential issues early on and ensures the equipment operates safely and efficiently.
  10. Emergency preparedness: Have emergency procedures in place, including knowledge of emergency stops, shutdown procedures, and how to respond to accidents or malfunctions involving variable pulleys. Workers should be aware of evacuation routes and have access to communication devices for summoning help if needed.

variable pulley

What role do variable pulleys play in achieving variable speed control in machinery?

Variable pulleys, also known as variable speed pulleys or variable drive pulleys, play a crucial role in achieving variable speed control in machinery. They provide a means to adjust the speed ratio between the input and output shafts, allowing for precise control of rotational speed. Here’s how variable pulleys enable variable speed control:

1. Speed Adjustment:

Variable pulleys consist of two pulley halves: a fixed pulley half and a movable pulley half. The movable pulley half can be adjusted along the axis of the shaft, changing its effective diameter. By altering the position of the movable pulley half, the speed ratio between the input and output shafts can be modified. When the movable pulley half is positioned closer to the fixed pulley half, the effective diameter increases, resulting in a higher speed ratio. Conversely, when the movable pulley half is positioned farther away, the effective diameter decreases, leading to a lower speed ratio. This adjustability allows for fine-tuning of the speed control in machinery.

2. Continuous Speed Variation:

Unlike fixed-speed pulleys or gear systems with discrete speed settings, variable pulleys offer continuous speed variation. The adjustment mechanism associated with variable pulleys enables smooth and seamless transitions between different speed ratios. By precisely positioning the movable pulley half, the desired speed can be achieved without the need for manual gear changes or transmission adjustments. This continuous speed variation capability allows machinery to operate at optimal speeds for different tasks or operating conditions.

3. Energy Efficiency:

Variable pulleys contribute to energy efficiency in machinery. By providing adjustable speed control, they allow the system to operate at the most efficient speed for a given task. This optimization minimizes energy waste and reduces unnecessary power consumption. For example, in applications such as HVAC systems or industrial machinery, variable pulleys enable the motor or engine to operate at the most efficient speed, resulting in improved energy efficiency and reduced operating costs.

4. Load Adaptation:

Variable pulleys facilitate load adaptation in machinery. By adjusting the speed ratio, the torque and power characteristics of the system can be optimized to match the specific load requirements. When higher torque is needed, the variable pulley can be adjusted to provide a lower speed ratio, allowing the system to handle heavier loads. Conversely, when speed is a priority, the variable pulley can be adjusted to provide a higher speed ratio, sacrificing some torque in favor of increased rotational speed. This load adaptation capability allows machinery to effectively handle varying load conditions.

5. Control Precision:

Variable pulleys offer precise speed control, enabling machinery to meet specific speed requirements with high precision. The fine adjustments in the effective diameter allow for accurate and controlled speed setting. This level of control precision is particularly advantageous in applications where precise speed synchronization, timing, or regulation is critical, such as in robotics, conveyor systems, or automated manufacturing processes.

By providing adjustable speed control, continuous speed variation, energy efficiency, load adaptation, and control precision, variable pulleys play a vital role in achieving variable speed control in machinery. Their flexibility and ability to fine-tune speed ratios contribute to improved performance, productivity, and efficiency in various industrial and mechanical applications.

variable pulley

In which industries and applications are variable pulleys commonly used?

Variable pulleys, also known as variable speed pulleys or variable drive pulleys, find extensive use in various industries and applications due to their ability to provide adjustable speed ratios. Here are some industries and applications where variable pulleys are commonly employed:

1. Automotive Industry:

Variable pulleys are widely used in automotive applications, particularly in continuously variable transmissions (CVTs). CVTs use variable pulleys to provide seamless speed adjustments, optimizing engine performance and fuel efficiency. They allow the engine to operate at its optimal speed for different driving conditions, resulting in smoother acceleration, improved fuel economy, and reduced emissions.

2. Manufacturing and Industrial Machinery:

In manufacturing and industrial settings, variable pulleys are utilized in various machinery and equipment. They are employed in conveyor systems, where they enable speed control to match the production requirements. Variable pulleys are also used in milling machines, lathes, and other machining equipment, allowing operators to adjust spindle speeds for different materials and cutting operations.

3. HVAC Systems:

Heating, ventilation, and air conditioning (HVAC) systems often incorporate variable pulleys in their fan and blower motors. By adjusting the pulley position, the speed of the fan or blower can be controlled to maintain the desired airflow and temperature regulation. This enables energy efficiency and precise climate control in residential, commercial, and industrial HVAC applications.

4. Agricultural Equipment:

Variable pulleys are utilized in various agricultural machinery, such as combine harvesters, tractors, and irrigation systems. They allow farmers to adjust the speed of different components, such as the harvesting mechanisms or water pumps, according to the specific requirements of the task or crop. Variable pulleys contribute to efficient agricultural operations and optimal utilization of resources.

5. Exercise Equipment:

In the fitness industry, variable pulleys are commonly found in exercise equipment like treadmills, elliptical trainers, and stationary bikes. These pulleys allow users to adjust the resistance and speed of the equipment, providing customizable workout intensity and accommodating different fitness levels.

6. Material Handling Systems:

Variable pulleys are utilized in material handling equipment, such as conveyors, lifts, and cranes. They enable precise speed control, allowing for efficient movement of goods and materials in warehouses, distribution centers, and manufacturing facilities.

7. Power Transmission Systems:

Variable pulleys play a crucial role in power transmission systems, where adjustable speed ratios are required. They are employed in applications like industrial pumps, compressors, and generators, allowing for flexible speed control and optimal performance.

These are just a few examples of the industries and applications where variable pulleys are commonly used. Their versatility and ability to provide adjustable speed ratios make them valuable components in numerous mechanical systems, contributing to improved efficiency, performance, and control.

China manufacturer Carrier Plastic PE HDPE Belt Imapct Conveyor Idler Nylon Roller Pulley   with Great quality China manufacturer Carrier Plastic PE HDPE Belt Imapct Conveyor Idler Nylon Roller Pulley   with Great quality
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variable pulley

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