In variable speed transmission system, what are the advantages and disadvantages of Raw-Edge V Belts compared to other types of belts

In the field of modern industrial transmission, variable frequency transmission systems have become the core technology of many industries with their efficient, energy-saving and precise speed regulation capabilities. However, the performance of the system depends largely on its key component, the transmission belt. Among many belt types, Raw-Edge V Belts (cut V belt) has an important position in the field of variable frequency transmission due to its unique structure and excellent performance.

Significant advantages of Raw-Edge V Belts
1. Higher transmission efficiency and energy-saving effect
One of the major goals of variable frequency transmission systems is energy saving. Raw-Edge V Belts excels in this regard. Its unique fabric-free design directly uses the rubber friction force on the side of the belt for transmission, which significantly reduces the energy loss caused by the traditional cloth-covered V-belt due to the fabric friction. In addition, the molded tooth structure at the bottom of the belt makes it less deformation when bending and the internal stresses are more uniform. This not only reduces the bending fatigue of the belt, but also reduces the sliding loss during transmission. Compared with traditional package V-belts, the transmission efficiency of Raw-Edge V Belts is usually 1%-3% higher, which can bring considerable energy savings in long-term operation, especially in high-power applications.
2. Excellent heat dissipation performance and longer life
When the frequency converter system is running at high speed, the belt will generate heat. If heat cannot be dissipated effectively, it will accelerate rubber aging and shorten the belt life. The molded tooth structure of Raw-Edge V Belts not only improves bending efficiency, but also increases the surface area of ​​the belt, forming an effective heat dissipation channel. This enables the temperature rise to be effectively controlled when the belt is operated at high speed and high load. Lower operating temperatures mean that the thermal aging of the rubber material slows down, greatly extending the belt's service life. This is crucial for variable frequency devices that require long continuous operation, reducing maintenance frequency and downtime.
3. Excellent flexibility with smaller pulley diameter
Frequency variable transmission systems often require large speed changes, which requires excellent flexibility of the belt to accommodate frequent bending and reverse bending. The molded teeth design of Raw-Edge V Belts makes it extremely bending and allows easy passage through smaller diameter pulleys. This feature makes the transmission system design more compact, saves installation space and enables higher transmission ratios. In some space-constrained applications, this is an irreplaceable advantage that Raw-Edge V Belts is irreplaceable.
4. Better transmission stability and vibration control
During the acceleration and deceleration process, the frequency conversion system will generate dynamic loads and vibrations. Raw-Edge V Belts' material formulation and structural design make it have good cushioning and damping properties. It can effectively absorb and attenuate torque fluctuations from the motor, reduce the resonance risk of the system, and thus ensure the smoothness of the transmission. This excellent stability reduces wear on bearings and other components of the equipment and extends the service life of the entire system.

Potential disadvantages and considerations of Raw-Edge V Belts
1. Relatively high initial cost
Compared to traditional cloth-covered V-belts, Raw-Edge V Belts are typically more expensive to purchase due to its more complex molding process and higher performance material formulation. This may become a trade-off for applications that are extremely cost-sensitive and have low transmission requirements.
2. Higher requirements for installation tension
Raw-Edge V Belts must perform best and have high requirements for its installation tension accuracy. Too low tension will cause slippage and reduce transmission efficiency; too high tension will increase bearing load and accelerate fatigue of the belt itself. Therefore, it is necessary to use a professional tension gauge for precise measurement and adjustment during installation, which requires technicians to have certain professional knowledge.
3. Exposed edge cutting
Although the edge cutting design brings higher efficiency, compared with the V-band with outer cladding, the edge cutting part of the Raw-Edge V Belts is more susceptible to external environments such as oil stains and chemical corrosion. Although the modern Raw-Edge V Belts has been made of highly oil-resistant and heat-resistant rubber materials, in extremely harsh environments, the belt needs to be properly protected or special models are selected.
4. Visibility of side wear
After long-term use, the sides of the Raw-Edge V Belts will wear out. Although this is normal, if the wear is not uniform, a careful diagnosis may be required. Customers need to understand that this visible wear pattern is a reflection of its working principle, not a quality issue, which requires clear explanation in the instructions for use.