V-belts transmit torque between shafts. The belt should not be in contact with the bottom of the belt pulley groove, but with its sides only. Considering the fact that a V-belt transmits torque at a relatively low tension, the V-belt drive has certain qualities, such as a higher efficiency compared to a flat belt drive, or improved safety of the drive in cases where there is small belt pulley contact. It also allows the belt to slip in cases of high shock load.
Wrapped GUFERO® V-belts are belts of an older design whose entire surface is wrapped in rubber-coated cloth. Wrapped V-belts can be used in all industries. Compared to raw edge V-belts, they are characterized by higher resistance to oils and temperature with potential V-belt creep in the belt pulley. Wrapped V-belts can be used as friction clutches during starting.
Classic-section wrapped GUFERO® V-belts, also known as jacketed V-belts are used in a number of mechanical engineering industries starting with precision machinery up to heavy machinery, in the agricultural sector, transport sector, etc. Classic-section wrapped V-belts provide cost-effective solutions for drives. Among the advantages of wrapped V-belts are their long service life and low maintenance costs. The temperature resistance of classic-section wrapped V-belts is from -55 °C to +70 °C.
Narrow-section wrapped GUFERO® V-belts are designed for high power. They fulfil the requirements imposed on them by advanced driving mechanisms and are used in all fields of mechanical engineering, starting with precision machinery up to heavy machinery and agriculture. Narrow-section GUFERO® V-belts provide up to 50 % higher transmission of power compared to classic-section V-belts. Narrow-section belts are characterized by their long service life and low maintenance costs. The temperature resistance of narrow-section V-belts is from -55 °C to +70 °C.
Banded wrapped GUFERO® V-belts are made by combining individual V-belts to create a single wide band. The transmitted power and section of the belts in the case of banded belts is the same as for individual belts. Banded belts are used for the elimination of vibrations of individual belts in machines with shock and alternating load or in belt transmission systems with large distance between axes. Banded belts are therefore widely used in farm machines, machine tools, crushing machines, fans and in other cases where uneven loads are transmitted. The most frequent applications of banded V-belts are found in combine harvesters and mowing machines
Classic-section raw edge GUFERO® V-belts are belts with internal gearing and are employed for the transmission of high power and revolutions. Classic-section raw edge belts are used in all types of machines with higher loads. They are used as an alternative to wrapped V-belts as a way to improve service life and reduce the number of belts in sets. These belts are widely used in all fields of mechanical engineering, starting with precision machinery up to heavy machinery. The advantages of classic-section raw edge V-belts include the aforementioned transmission of high power and revolutions and a high circumferential speed of up to 50 m/s. The temperature resistance of classic-section raw edge V-belts is from -30 °C to +90 °C.
Narrow-section raw edge GUFERO® V-belts are belts with internal gearing which fulfil the most demanding requirements imposed on them by advanced driving mechanisms. They can be used in all fields of mechanical engineering, starting with precision machinery up to heavy machinery. Among the main advantages of narrow-section raw edge V-belts are the high circumferential speed of up to 50 m/s and the temperature resistance from -30 °C to +90 °C.
GUFERO® variable speed V-belts are wide V-belts which fulfil the most demanding requirements with regards to dynamic stress and lateral rigidity. They excel due to their high quality and long service life. Variable speed belts are usually used in drives with stepless speed variation, in drives with variable speed belt pulleys and with Variomatic transmission gears and automatic transmission gears. The advantages of variable speed V-belts are their long service life, smooth and silent running and their transmission of high power. Variable speed V-belts are resistant to oils and other chemical substances. The temperature resistance of variable speed V-belts is from -30 °C to +80 °C.
Automotive narrow-section raw edge GUFERO® V-belts are belts with internal gearing for the transmission of high power and revolutions. Narrow-section raw edge belts are widely used in motor vehicles of all kinds with high loads and demands on long service life. Automotive narrow-section raw edge V-belts are known for their long service life and the transmission of high power and revolutions. Automotive narrow-section belts are resistant to oil and chemical substances and can withstand temperatures from -30 °C to +90 °C.
V-ribbed GUFERO® belts also known as multi-groove belts provide a solution for high transmission gear ratios, high speeds of the belt, belt transmission systems with many pulleys, in situations where there are belt pulleys with small sections and where an external tensioning pulley is used. In most cases this type of belt is used as a driving belt in compact drives in home appliances, tools and in the automotive industry. In addition, V-ribbed belts are used in many industrial applications, including heavy machinery. The distinguishing advantages of V-ribbed belts include their high transmitting power, long service life, near vibration-free running, high permitted circumferential speed of up to 60 m/s and their temperature resistance from -30 °C to +80 °C.
Polyurethane GUFERO® V-belts are designed in particular for compact drives with short distance between axes and small diameters of belt pulleys. Among characteristic properties of polyurethane V-belts are smooth running up to a speed of approx. 90 m/s and a very low noise level. The polyurethane mixture for V-belts with a high friction coefficient ensures high efficiency resistant to ozone and most chemical substances and excellent resistance to the effects of oils and heat. Polyurethane V-belts withstand temperatures up to +90 °C.
The basic material for the manufacture of the GUFERO® V-belts is natural rubber or mixtures of synthetic rubbers.
Hardened shiny sides of the belts (belts with various tensions in the set)
Excessive noise (V-belt squeaking)
Cracks or missing pieces in the belt body
Fracture of the belt after a short run time
Contamination of belts
Excessive wear of the belt sides / cracked belt sides