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iglidur® X - Material data

The most important specifications at a glance

Excellent wear resistance at high temperatures
Suitable for extremely high speeds
Low moisture absorption
Excellent wear resistance under water
Very high media resistance
Resistant to high loads (>60N/mm²)
Electrically conductive
Mould resistant according to DIN EN ISO 846

Material properties

When do I use this material?

For pressure loads up to 150MPa
For linear movements with stainless steel at high temperatures
Universal chemical resistance
For temperature resistance from -100°C to +250°C (short-term up to +315°C)
For very low moisture absorption
For high wear resistance over the entire temperature range

When do I use a different material?

When low coefficient of wear is particularly important under high loads
iglidur® Q, sleeve bearing, mm
iglidur® Z, sleeve bearing, mm
When a cost-effective bearing is required for underwater use
iglidur® H, sleeve bearing, mm
iglidur® H370, sleeve bearing, mm
For edge loads
iglidur® Z, sleeve bearing, mm

Maximum surface speed

m/s	Rotating	oscillating	Linear
Constant	1,5	1,1	5
Short-term	3,5	2,5	10

Table 02: Maximum surface speeds

Permitted surface speeds

iglidur® X is designed for higher speeds than other iglidur® bearings. This is made possible by a high temperature resistance and very high thermal conductivity. This is already clear from the pv values of maximum 1.32 MPa · m/s. At the same time, only minimal radial forces act on the bearings in this case. At the specified speeds, an increase in temperature up to the long-term permitted value can occur due to friction.

p x v value and lubrication

Coefficients of friction

Figure 04: Coefficients of friction dependent on the surface speed, p = 0.75 MPa

X = Sliding speed [m/s]
Y = Coefficient of friction μ

Coefficients of friction

Figure 05: Coefficients of friction dependent on the load, v = 0.01 m/s

X = Load [MPa]
Y = Coefficient of friction μ

Friction and wear

Just like the wear resistance, the coefficient of friction µ also alters with the load (Fig. 04 and 05).

iglidur® X	Dry	Grease	Oil	Water
Coefficients of friction µ	0,09 - 0,27	0,09	0,04	0,04

Table 04: Coefficients of friction for iglidur® X against steel (Ra = 1 μm, 50 HRC)

Coefficients of friction

Wear resistance

Shaft materials

The friction and wear are also dependent, to a large degree, on the counter partner. Shafts that are too smooth increase the coefficient of friction of the bearing. Ground surfaces with an average surface finish Ra of 0.6 to 0.8µm are ideal.

Diagrams 06 and 07 display a summary of the results of tests with different shaft materials executed with plain bearings made of iglidur® X. If the shaft material you intend to use is not included in the test results presented here, please contact us.
Shaft materials

Wear

Figure 06: Wear, rotating application with different shaft materials, p = 1 MPa, v = 0,3 m/s

Y = wear [μm/km]

A = Aluminum, hard-anodized
B = machining steel
C = Cf53
D = Cf53, hard chrome-plated
E = St37
F = V2A
G = X90

Shaft material

Diagram 07: Wear on rotating and oscillating applications with various shaft materials, p = 2 MPa

Y = wear [μm/km]

A = CF53
B = hard-chromed
C = 304 SS

blue= rotating
pink= oscillating

Diameter d1 [mm]	Shaft h9 [mm]	iglidur® X F10 [mm]	Housing H7 [mm]
Up to 3	0 - 0,025	+0,006 +0,046	0 +0,010
> 3 to 6	0 - 0,030	+0,010 +0,058	0 +0,012
> 6 to 10	0 - 0,036	+0,013 +0,071	0 +0,015
> 10 to 18	0 - 0,043	+0,016 +0,086	0 +0,018
> 18 to 30	0 - 0,052	+0,020 +0,104	0 +0,021
> 30 to 50	0 - 0,062	+0,025 +0,125	0 +0,025
> 50 to 80	0 - 0,074	+0,030 +0,150	0 +0,030

Table 07: Important tolerances iaw. ISO 3547-1 after press-fitting.

Installation tolerances

iglidur® X bearings are standard bearings for shafts with h-tolerance (recommended minimum s h9). The bearings are designed for press-fit in a housing with h7 tolerance. After the installation in a housing with nominal diameter, the inner diameter of the bearing automatically adjusts to the F10 tolerance. In certain dimensions the tolerance in dependence on the wall thickness deviates from this (See delivery program )

Additional properties

Medium	Resistance
Alcohols	+
Hydrocarbons	+
Fats, oils, without additives	+
Fuels	+
Diluted acids	+
Strong acids	-
Diluted bases	+
Strong bases	+

+ resistant 0 partially resistant - non-resistant
All specifications at room temperature [+20°C] Table 05: Chemical resistance of iglidur®

Electrical properties

Specific forward resistance	< 10⁵ Ωcm
Surface resistance	< 10³ Ω

Chemical resistance

iglidur® X bearings have almost universal chemical resistance. They are usually affected only by concentrated acids.

Radioactive rays

The iglidur® X bearings are radiation resistant up to a radiation intensity of 1 • 10⁵ Gy.

UV-resistant

The excellent material features of the iglidur® X do not alter under UV radiation and other climatic influences.

Vacuum

The iglidur® X bearings can also be used almost unrestrictedly in vacuum. An evaporation takes place only to a minor degree.

Electrical properties

Bearings made of iglidur® X are electrically conductive.

Typical application areas

Beverage industry

Beverage industry

Woodworking industry

Woodworking industry

Airplane

Aviation

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