iglidur® H370 - material data

iglidur H370 is an advanced development of the iglidur H series. The material is characterised by particularly low total moisture absorption and clearly enhanced wear resistance. With regard to the mechanical and thermal characteristics, iglidur H370 shows the same properties as iglidur H.

With increasing temperatures, the compressive strength of iglidur H370 plain bearings decreases. The temperatures prevailing in the bearing system also have an influence on the wear. The wear rises with increasing temperatures. Additional securing is required at temperatures higher than +100°C.

Temperatures, coefficient of thermal expansion

The maximum permitted surface speed is dependent on whether the temperature at the bearing point becomes too high or not. iglidur H370 is suitable for surface speeds of 1.2m/s (rotating) and 4m/s (linear). The maximum values stated in the table are only valid for minimum pressure loads and are often not achieved in practice.

Surface speeds of various iglidur materials

The coefficient of friction alters only little, like the wear resistance with increasing load and surface speed (diagrams 04 and 05).

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

iglidur H370 plain bearings are resistant to chemicals. They are resistant to most lubricants. iglidur is not affected by most weak organic and inorganic acids.

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

iglidur H370 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 being assembled into a nominal size housing, in standard cases the inner diameter of the bearing automatically adjusts to the F10 tolerances. For particular dimensions the tolerance differs depending on the wall thickness (please see product range table).

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