What is Conveyor Roller? Classification and structure of conveyor rollers

Rulo băng tải là gì? Phân loại và cấu tạo của rulo băng tải

Conveyor belt (Conveyor Roller) is an extremely important part in the conveyor system. Today Sukavina will introduce you to everything you need to know about rollers and the most reputable conveyor roller supplier!

1/ What is a conveyor belt?

Conveyor belt is a very important part in the conveyor system, affecting the operability of conveyor belts, ensuring continuous transportation on schedule, improving working efficiency for workers. significantly increase profits for businesses, factories, factories, etc.

2/ What is the role of conveyor belt?

Conveyor rollers have a very important role in conveyor belts, as an intermediary to connect conveyor belts and conveyor motors to support the conveyor’s movement more efficiently in the long run.

Each conveyor will usually have passive and active rollers, which can be arranged with 1 or more to make the belt tensioning process more efficient and convenient.

3/ How is the conveyor belt structured?

Conveyor rollers have many different types depending on the needs and purposes of production and business of enterprises, factories, laboratories… Conveyor rollers are mainly classified including: spokes rollers, pipe rollers, plastic conveyor rollers, rubber rollers, damping rollers…

3/1.Construction of tubular conveyor roller:

  • Conveyor roller tubes are cast in steel, stainless steel or cast iron…
  • The conveyor roller shaft has a round tube shape, depending on the purpose of use, the manufacturer will advise you to choose the core or the pipe reinforcement.
  • Flange: a piece of metal made into a round tube, with a thickness and diameter suitable for the shape of the conveyor roller tube.
  • Some tubular conveyor rollers are coated with additional rubber called damping rollers to reduce friction and scratches to ensure more efficient operation.
Tubular conveyor roller structure
Tubular conveyor roller structure

Advantages of tubular rollers: High aesthetics, durable structure, flexible design should be used more than spokes.

Disadvantage of tubular rollers: Poor friction, weak shaft & sealing face need to be reinforced. In addition, the processing of tubular rollers also requires high technical skills and expertise, leading to a slightly higher cost than spokes.

3/2.Structure of spokes conveyor roller:

  • This type of conveyor roller is less commonly used than tubular conveyor rollers, they are usually made of steel or stainless steel.
  • Roller shaft can be reinforced or tubular depending on the tonnage requirements.
  • Seal: Includes metal pieces welded together on a circular axis, with various thicknesses and diameters depending on the needs of use.
  • Conveyor roller cam: Cast from solid steel, heat-welded circle on flange, diameter depends on roller shaft.
Structure of spokes conveyor rollers
Structure of spokes conveyor rollers

Advantages of spokes conveyor rollers: Has high friction and grip, superior to tubular rollers. This type of roller is easy to process, so it is cheaper than the pipe roller.

Disadvantages of spokes conveyor rollers: The biggest disadvantage of this type of roller is the weak topology, if the spokes are soldered, the rubber band will be damaged. In addition, its aesthetics are inferior to pipe rollers and few models to choose from

4/ Learn how conveyor rollers work

4.1.Operating principle of active conveyor roller:

The higher the coefficient of friction, the larger the roller size will greatly increase the pulling force to support the conveyor’s movement, improve the speed of the conveyor faster and the work will be completed sooner.

4.2.Operating principle of the passive conveyor roller:

Designed with a smaller diameter than active conveyor rollers, supporting conveyor movement. The passive conveyor roller will move thanks to the friction force, operating in cycles to ensure stability and continuity for a long time.

5. Conveyor belt application in the manufacturing industry

Roller conveyors are widely applied in important manufacturing industries, highly appreciated and trusted by many businesses and companies. Some of the main applications of roller conveyors are as follows:

  • Tubular conveyor rollers: are commonly used in printing, packaging, textile, threading, crane industries, etc. They improve the conveying capacity of the conveyor belt and thereby transport goods. Safe and continuous, ensuring the deadlines and progress of the work. Tubular conveyor roller is an effective support for the conveyor system in modern industry.
  • Spoke Conveyor Rollers: have fewer applications than tubular conveyor rollers, mainly used in bucket conveyors. The spokes conveyor roller supports the conveyor movement very well, ensuring that the goods are not broken or scratched when moving on the runway. The spokes conveyor belt is an indispensable choice for businesses and enterprises in the industrial working environment.

6/ What types of conveyor rollers does Sukavina have?

Sukavina is a company specializing in the production of top quality industrial equipment, including operation tables, trolleys, conveyors, storage shelves… Currently, we are manufacturing all kinds of conveyor rollers according to customers’ requirements. row.

  • Classification of rollers by material:

Rubber coated roller: This type is a tubular conveyor roller, the inside is a steel or stainless steel core, the outside is covered with a rubber layer with a damping effect.

Rough PVC coated roller: Similar to rubber coated roller, but outside this type of roller is coated with rough PVC with the main use of increasing friction, and at the same time damping the conveyor belt.

Stainless steel roller: Made from sturdy, durable stainless steel, often used for heavy loads or clean room industries.

Steel roller: Tubular or spoked roller is manufactured from high quality steel material with excellent bearing capacity and long life.

Steel Conveyor Roller
Steel Conveyor Roller
  • Classification of rollers by structure

Spoke-shaped roller (spoke roller): Usually made from steel or stainless steel, composed of many steel pipes welded to the core at a certain distance.

Tubular roller: A round tube conveyor roller, made from steel or stainless steel, can be coated with plastic or rubber…

  • Classification of conveyor rollers according to the principle of operation

Active rule – active tang

Passive rulo – passive tang

Counterweight roller – increase the rope thread

7/ Outstanding advantages of conveyor rollers

It has the same operating method and structure as the roller system, but acts as a drive for the whole conveyor system. The outstanding advantages of conveyor rollers can be mentioned as:

Rulo has a stable structure, so it can operate for a long time without technical errors. Besides, the roller is also easy to replace and repair if there is a problem.

The roller is designed concentrically, does not cause centrifugal force, so it limits the situation of the conveyor belt sagging after a period of use.

Conveyor belts are made of high-strength materials, surface treated to suit the needs of use to increase resistance, durability, and long life.

8/ The process of making conveyor rollers you may not know

The manufacturing process of conveyor rollers is carried out through the following steps:

Step 1: Survey the conveying needs of the conveyor, evaluate and choose the right type of roller.

Step 2: Calculate the design of the conveyor roller to suit the needs, then proceed to the drawing.

Step 3: Verify and check drawings, then proceed to production.

Step 4: Install, test and test run.

Step 5: Final inspection and shipment.

You may not know that the rollers of conveyor rollers are manufactured by different methods: Fabrication by drawing, manufacturing by hot/cold rolling, forging by pressing or free forging. … Let’s refer to the manufacturing process and the advantages and disadvantages of each method!

8.1. Method of making rollers by pulling

The manufacturing method by drawing is a form of spinning the metal billet through the hole of the drawing die, the purpose is to increase the length of the roller shaft and reduce the cross section. The size and shape of the cross section of the roller shaft will be the same as that of the drawing die hole.

Advantages of the drag method: This method has high precision and quality, ensuring high gloss and precision. Besides, the machining operation is also easy.

Defect :

Large tensile force is required because when cold drawn, the material is difficult to deform, leading to low productivity.
In contrast, when hot-drawing, it is easy to deform the metal, the productivity is higher, but the durability, gloss and accuracy of the product are poor.
Besides, the method of making rollers by pulling is only applicable to small diameter rollers.

8.2. Method of manufacturing stainless steel roller shaft by rolling

Manufacturing stainless steel roller shafts by rolling is the process of making the material deform between the two rotating shafts in opposite directions so that there is a gap smaller than the height of the shaft, reducing the height of the shaft and the length and width of the shaft. increase. There are 2 ways of hot rolling and cold rolling:

HR

Advantages: This method of making conveyor rollers results in a high quality finished product.

Cons: Can’t make products with high complexity.

Cold rolled

Advantages: The cold rolling method does not change the structure of the steel, so the steel structure is stronger. Besides, the product after cold rolling also has high precision and smooth surface.

Disadvantages: When the applied force is too large, uncontrolled, it will deform causing surface cracking. Because of cold rolling, large rolling force is required and only thin parts can be rolled.

8.3. Fabrication of conveyor roller shafts by pressing method

The pressing method is to put the metal workpiece into an airtight cylindrical pressing chamber. Under the impact of the punch, the product will pass through the hole of the die and have the same cross-section as the shaft.

Advantages:  Products with high precision and quality, the ability to continuously produce and fabricate products with complex shapes.

Cons: Easy to wear out after a period of use.

8.4. Fabrication of the roller shaft by the free forging method

The free-forging method uses external forces applied through tools and forging temperatures, causing the material to deform to the desired shape and size.

Advantages: Flexible manufacturing method, widely used, can manufacture products of large size, simple equipment, low investment.

Cons: Poor accuracy, low aesthetics, but labor-intensive, so economic efficiency is not high. This method does not even give the desired uniform quality.

9/ The standards for evaluating conveyor rollers are safe to use

In order to produce them with correct technique, safety and good operation, the design standards of conveyor rollers should not be ignored as summarized below!
Regarding the general requirements, quality product should have:
  • The roller transmits the power from the motor to the conveyor belt stably and smoothly, ensuring the conveyor system’s stable and long-term reciprocating motion.
  • In the design, the conveyor roller needs to ensure accurate calculation, pay attention to the alignment of the shaft and the concentric roller shell, to avoid the phenomenon of centrifugation that shakes the conveyor, falls and breaks the goods.
  • Conveyor rollers need to have high rigidity, impact resistance, and anti-distortion, affecting the grip of the conveyor belt on the surface of the roller and the stability of the chain.
  • The roller must be made of a corrosion-resistant material that withstands harsh industrial environmental conditions for a long time.
Technical safety standards of rollers: This is the standard that plays an important role in determining the quality of rollers. When designing, it is necessary to ensure that the most basic requirements are stable and efficient operation, ensuring the safety of both operators and goods in production.
Standard for input materials: Because the roller plays an important role in the operation of the conveyor belt, the material needs to meet the requirements for bearing capacity, durability and meet the working environment. Quality materials will produce long-life rollers, minimizing errors and problems during operation.
Safety dimension standards: The minimum thickness of the roller tube must be 4mm for all roller materials. The size depends on the size of the conveyor system.
In the machining of the roller, the most important surface is the working surface of the roller. They must meet the following basic standards:
  • During operation, the roller shaft is mounted on two bearings, so it is necessary to ensure the concentricity between the shaft centerline and the bearings.
  • The surface of the roller is important, so it needs to be precision grinding, perfect surface gloss for the part.
  • The surface is not involved in the assembly process, the roller must be finely turned.
  • Tolerance for ovality, surface curvature and not more than 0.01 mm.
  • The groove surface of the shaft to be machined is by milling.
  • Sharp edges and shaft ends should be chamfered to a pre-measured angle.
  • The parallelism between the surfaces to be assembled must be ensured.

10/ Quotation of conveyor rollers

They are mainly classified into two main types: tubular conveyor rollers and spokes conveyor rollers. Each type of conveyor roller has different properties and applications, so the cost will also be completely different. Conveyor rollers manufactured by Sukavina are quality assured by having a system of machines, advanced technology and a team of highly qualified engineers. Conveyor roller has the lowest price on the market because it is produced directly from the factory, not through any other intermediaries.
For the latest conveyor roller price quote, please contact Sukavina through the main communication channels on the website https://sukavina.com.vn/  to receive the best consulting support.

11. Sukavina – A place to manufacture and assemble quality industrial equipment

Sukavina is a manufacturer and assembler of quality industrial equipment for many major partners across the country. Some important partners that Sukavina is supplying industrial equipment products to include:
  • Electrical and electronic industry: Samsung, Intel, Dien Quang…
  • Footwear and garment industry: Biti’s, Viet Tien, Adidas…
  • Automotive industry: Thaco Truong Hai, Toyota, …

Coming to Sukavina, customers can be assured of genuine products with quality standards and the most prestigious warranty service in our company. We look forward to receiving more customer feedback to improve service quality better and better.

To learn more about conveyor rollers and other industrial products, please contact:


Contact us via

SUKAVINA CO., LTD

  • Hotline: 0979 034 634 (Mr Toàn) hoặc 0931 155 155 (Mr Năng)
  • Email: sales@sukavina.com
  • Website: sukavina.com.vn

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  • 1028 Liên Huyện, An Phú, Thuận An, Bình Dương.
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