iglidur® Q - material data

iglidur Q plain bearings were developed especially for extreme loads. Under high loads, iglidur Q figures among the iglidur materials that by far display the best wear resistance. From a radial load of 25MPa, even plain bearings made from the abrasion-resistant iglidur W300 are exceeded. Specific solid lubricants, precisely integrated into the material, ensure that the maintenance-free dry operation is guaranteed under any load.

Plain bearings made from iglidur Q retain their excellent wear resistance even at high temperatures. Additional protection is required at temperatures above +50°C. It should also be noted that the coefficient of friction increases sharply depending on the temperature from approx. +100°C.

Temperatures, coefficient of thermal expansion

Under extreme radial loads, iglidur Q plain bearing can reach the highest pv values possible in dry operation with iglidur plain bearings. Although iglidur Q plain bearings have the greatest advantages at high loads and low speeds, high surface speeds are also possible due to the excellent coefficient of friction of these bearings. The values given in the table show the speeds at which the temperature rises to the maximum permissible value as a result of friction.

Surface speeds of various iglidur materials

Many plastic bearings feature decreasing coefficients of friction with increasing loads in dry operation. iglidur Q exceeds most iglidur plain bearings in this respect: Under high pressures the material offers excellent coefficients of friction (diagrams 04 and 05).

Coefficients of friction against steel (Ra = 1μm, 50HRC:

iglidur Q plain bearings have very good resistance to chemicals. They have excellent resistance to organic solvents, fuels, oils and greases. The material is only partially resistant to weak acids and weak alkalis.

All data at room temperature [+20 °C],      + resistant      0 conditionally resistant      - non-resistant

iglidur Q plain bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed for press-fit into a housing machined to a H7 tolerance. After installation in a housing with nominal dimensions, the inner diameter of the bearings with E10 tolerance adjusts automatically. For certain dimensions, the tolerance deviates from this depending on the wall thickness (see product range).

Important tolerances according to ISO 3547-1 after press-fit: