Ningbo Ward Transmission System Co., Ltd





Features of XPC toothed V-belt

Features of XPC toothed V-belt

The oil and heat resistance characteristics of the belt (described as O&HR on the belt) are the traditional application requirements for the oil and heat resistance of the belt, although they are defined in the RMA standard. But in fact, this description is ambiguous. Oil resistance and heat resistance are actually two different requirements of belts, which should be distinguished.

Oil resistance: accidental oil or grease splashing on the belt usually does not have too much disadvantage to the normal belt. However, the performance of oil-resistant belts will not deteriorate quickly as long as the oil or grease is within a reasonable range. A large amount of oil or grease on any belt can cause the belt to slip and generate heat. Excessive oil contamination of petroleum products will cause the expansion of rubber and the decrease of adhesive force of rubber components, thus causing the belt to break.

Heat resistance: any standard does not well define the temperature limit range to ensure satisfactory performance. However, a suitable application belt is usually required to have an ambient temperature between - 35 ℃ and+60 ℃. The material and structure of the belt determine the relative range and duration of heat resistance, which is indicated by good and good in the following table.

Ozone resistance

The ozone resistance of the belt is the ability to resist chemical corrosion in the ozone environment, because ozone can cause chemical adhesion and decomposition, and the failure mode is crack. The degradation of rubber mainly depends on the concentration of ozone and the frequency of exposure. When the belt is squeezed. The degradation of rubber caused by ozone will increase. In theory, when the belt with large section is bent on a pulley than the belt with small section

Antistatic characteristics

In some international standards (ISO, RMA), there are specific descriptions on the conductivity and conductivity test of the belt. In some dangerous environments, certain protection needs to be recommended. For example, the entire ground system can be protected from sudden static discharge, and a conductive brush or similar device can also discharge the static electricity around the belt.