The Difference Between Ordinary V Belts and SPC v Belts

There are many specifications and models of V-belts, and the performance characteristics of different types of V-belts may vary. For example, SPC V-belts and regular V-belts have significant differences. Let's follow the V-belt manufacturer to learn more about them.

1. The SPC triangular strip is slightly narrower than the regular triangular strip. The top width of the SPC triangular strip is 22.0 and the height is 18.0mm, while the top width of the regular triangular strip is 22.0 and the height is 14.0mm.

2. SPC V-belt is a narrow V-belt suitable for industrial machinery with high operating and transmission power. The ordinary triangular belt can be used for agricultural machinery.

3. The SPC v belt adopts a rope core in the upper layer, which can withstand large preload and increase the number of bends. When the belt height is the same as that of the ordinary triangular belt, its bandwidth is about 1/3 smaller than that of the ordinary v belt, and the bearing capacity can be increased by 1.5 to 2.5 times

4. SPC type V-belt without teeth.

5. When transmitting the same power, the width and diameter of the SPC type V-belt pulley can be reduced, and the cost is reduced by 20-40% compared to ordinary V-belts.

The above is an introduction to the differences between SPC v belts and ordinary v belts. I would like to remind everyone that no matter which model of triangular belt is used, it is not advisable to apply rosin or viscous substances, and to prevent contamination of engine oil, butter, diesel, and gasoline, otherwise it will affect its service life.

The bonding repair of v belts is a beneficial measure to save replacement costs, and the greater the properties of rubber, the better the bonding effect. In emergency situations, two repair methods, hot and cold, can be attempted to repair v belts with relatively light damage. The hot bonding method is achieved by vulcanizing raw rubber and the adhered rubber v belt together, which is a complex method that requires heating and pressure equipment, making it inconvenient to use. The cold bonding method is to apply the prepared adhesive to the surface of the bonded product, air it, stack it, and then cure it at room temperature. Of course, appropriate heating is beneficial for shortening the curing time and improving the bonding strength. The cold bonding method is simple and easy to implement, and it saves energy, making it a good method worth promoting.

1. Triangle belt installation tension too high

Excessive installation tension of the V-belt can cause the belt teeth to shear or break. Many belts with excessive tension have left clear marks of gear tooth wear on the belt tooth surface. Root cracking usually extends to adjacent cracks through the core wire, and individual belt teeth gradually fall off. Excessive surface pressure on the belt can cause extensive wear and tear on the belt, exposing the core wires. In order to prevent such wear issues, an appropriate belt installation tension value needs to be accurately set.

2. Impact load

When the clearance or periodic torque load required by the driven equipment is greater than the normal level, this impact load needs to exceed the force that the belt itself can withstand, and the impact load in the transmission system occurs. Often exacerbates belt failure. The ordinary V-belt can slow down the impact load with instant slip, but the Timing belt needs to transmit all the loads.

Severe impact loads can cause the belt core to break in a rough and uneven manner. After being subjected to immediate impact load in the pulley, the belt teeth can develop into tooth root cracking and/or tooth detachment. If the impact load only occurs once, or if the cycle is repeated at the fixed position of the belt, the remaining teeth of the belt may still appear normal. The cracks formed at the root of the teeth sometimes spread to the tip of the teeth. When too many cracks accumulate, the teeth will shear, leaving only a portion of the teeth.

The Causes of V Belt Fracture and the Correct Usage Method

Apply a vertical pressure of about 2 kilograms by hand in the middle of each tape, with a sinking amount of 20 to 30 millimeters. If not appropriate, make adjustments in a timely manner. Do not mix new and old: When two or more triangular tapes need to be replaced, the specified model of triangular tape should be selected, and the tightness of each group of triangular tapes should be consistent. It is not allowed to mix new and old tapes or reduce the number of tapes used. Otherwise, the force on the new and old triangular tapes will be uneven, and even the old triangular tapes will not work, affecting power transmission and shortening the lifespan of the triangular tapes. Strictly prevent contamination. During use, it is necessary to strictly prevent oil and mud stains on the triangular belt, avoid contact with corrosive substances such as acids and alkalis, and prevent early damage caused by slipping and corrosion of the triangular belt.

Correct usage of v belts

1. If the center distance between the two axes of the agricultural machinery v belt is an adjustable structure, the center distance should be shortened first, and the center distance should be adjusted according to the requirements after the tape is installed; If the center distance between the two axles is not adjustable, a triangular belt can be inserted into the wheel groove first, and then the other pulley can be rotated to install the triangular belt. Use the same method to install a set of v belts.

2. Drivers and users should master the correct operating essentials during normal driving, follow the technical requirements of the user manual, and try to avoid sudden starting and braking as much as possible; Frequent overloading should also be prevented; The machine should be removed if it is not used for a long time.

3. It is prohibited to use tools to forcefully pry or pull on the triangular tape to prevent it from extending or being too loose or tight. When installing belt pulleys in a series of grooves, the centers of the two upper pulleys need to be aligned, otherwise it will cause the triangular tape to work unilaterally, cause severe wear, and not reduce the service life of the triangular tape.