Please choose your delivery location

The selection of the country/region page can influence various factors such as price, shipping options and product availability.
My contact person
e-chains®, chainflex®, cables, harnessed systems readychain®

Hennlich OOD | Хенлих ООД

+359 32 511326
dry-tech® bearing technology

Hennlich OOD | Хенлих ООД

+359 32 511326
BG(EN)

iglidur® Q - Material data

Materials table

General features Unit iglidur® Q test method
Density g/cm³ 1,40
Colour black
Max. humidity absorption at 23°C/50% R. H. % weight 0,9 DIN 53495
Max. water absorption % weight 4,9
Coefficient of surface friction, dynamic, against steel µ 0,05 - 0,15
PV values max. (dry) MPa x m/s 0,55

Mechanical properties
Bending E-module MPa 4.500 DIN 53457
Tensile strength at +20 °C MPa 120 DIN 53452
compressive strength MPa 89
Maximum recommended surface pressure (20° C) MPa 100
Shore D hardness 83 DIN 53505

Physical and thermal properties
Max. long term application temperature °C +135
Max. short term application temperature °C +155
Lower application temperature °C -40
Heat conductivity [W/m x K] 0,23 ASTM C 177
Coefficient of thermal expansion (at 23° C) [K-1 x 10-5] 5 DIN 53752

Electrical properties
Specific forward resistance Ωcm > 1015 DIN IEC 93
Surface resistance Ω > 1012 DIN 53482
'Table 01: Material Data




Figure 01: Permitted PV values for iglidur® Q bearings with 1 mm wall thickness in dry operation against a steel shaft, at 20°C, installed in a steel housing.

X = Surface speed [m/s]
Y = Load [MPa]

 
iglidur® Q 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 25 MPa, it outclasses even bearings made of the highly abrasion-resistant iglidur® W300. Specific solid lubricants, integrated in the material in an extremely fine way, take care that the maintenance-free dry operation is guaranteed under any load.

Figure 02: Maximum recommended surface pressure dependent on the temperature (100 MPa to +20 °C)

X = Temperature [°C]
Y = Load [MPa]
Figure 03: Deformation under load and temperatures

X = Load [MPa]
Y = Deformation [m/s]

Mechanical properties

Maximum recommended surface pressure represents a mechanical material parameter. Tribological conclusions cannot be drawn from it. The pressure resistance of iglidur® Q bearings declines with increasing temperatures. Fig. 02 clarifies this connection.
iglidur® Q is a material used when high p x v values are reached through high loads. Fig. 03 shows the elastic deformation of iglidur® Q during radial loading. Under the maximum recommended surface pressure of 100 MPa, the deformation at room temperature amounts to less than 3 %.

Maximum surface speed

m/s Rotary oscillating Linear
Constant 1 0,7 5
Short-term 2 1,4 6
Table 02: Maximum surface speeds

Permitted surface speeds

Under extreme radial loads, the iglidur® Q bearings can reach the maximum p x v values possible in dry operation with iglidur® bearings. Although the iglidur® Q bearings offer the greatest advantages when subject to high loads and low speeds, high surface speeds are also attainable due to these bearings’ excellent coefficients of friction. The values in Table 02 show the speeds at which the temperature rises to the maximum permitted value as a result of friction.

Temperature limits

iglidur® Q Operating temperature
Lower - 40 °C
Upper, long-term + 135 °C
Upper, short-term + 155 °C
Secure axially in addition + 50 °C
Table 03: Temperature limits for iglidur® Q

Temperatures

The iglidur® Q bearings retain their excellent wear resistance in high temperatures as well. Additional safety is required at temperatures over +50°C. Also note that the coefficient of friction strongly increases dependent on the temperature from about +100°C.

Figure 04: Coefficients of friction dependent on the surface speed, p = 0,75 MPa

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

Friction and wear

Many dry-running plastic bearings feature decreasing coefficients of friction with increasing loads. In this regard, iglidur® Q again surpasses most iglidur® bearings: the material offers outstanding coefficients of friction under high loads (Fig. 04 and 05).
iglidur® Q Dry Grease Oil Water
Coefficients of friction µ 0,05 - 0,15 0,09 0,04 0,04

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

Wear information Figure 06: Wear, rotating application with different shaft materials, p = 30 MPa, v = 0,01 m/s
 
X = shaft materials
Y = wear [μm/km]
 
A = C45
B = St52
C = St52 gas nitrified
D = St52 salt bath nitrocarburized
E = St52 galvanised
F = 16MnCr5 yellow galvanised
G = 20MnV6, unhardened, hard chrome-plated
H = 38MnV S6, hardened, hard chrome-plated

Shaft materials

Fig. 06 shows an excerpt of the results of tests with different shaft materials conducted with bearings made of iglidur® Q. The strengths of iglidur® heavy-duty materials become clear from 30 MPa. iglidur® Q stands out in particular. Other heavy-duty materials such as iglidur® Q2 and TX1 only stand out from a wear perspective at higher loads. What makes iglidur® Q striking are its good wear properties on many different shaft materials.
Wear information Fig. 07: Wear with oscillating and rotating applications with Cf53 as a function of the load
 
X = Load [MPa]
Y = Wear [μm/km]
 
A = rotary
B = oscillating

Medium Resistance
Alcohols + to 0
Hydrocarbons +
Greases, oils without additives +
Fuels +
Diluted acids 0 to -
Strong acids -
Diluted bases +
Strong bases 0
+ resistant      0 limited resistance      - not resistant
All specifications at room temperature[+20 °C]
Table 05: Chemical resistance of the iglidur® bearings Q


Electrical properties

Specific forward resistance > 1015 Ωcm
Surface resistance > 1012 Ω

Chemical resistance

iglidur® Q bearings have a good resistance against chemicals. They possess an excellent resistance to organic solvents, fuels, oils and fats. The material is only partially resistant to weak acids and alkalis.

Radioactive rays

iglidur® Q bearings are radiation resistant up to a radiation intensity of 3 x 102 Gy.

UV-resistant

The tribological properties of the iglidur® Q bearings remain largely constant under climatic influences. However a minor embrittlement occurs in the material.

Vacuum

In application in vacuum, the potentially existent moisture content is degassed. For this reason only the dry iglidur® Q bearings are suitable for vacuum.

Electrical properties

Bearings made of iglidur® Q are electrically insulating.

Maximum moisture absorption
by +23 °C/50 % r. F. 0,9 weight-%
Max. water absorption 4,9 weight-%

Table 06: Moisture absorption of iglidur® Q
Effect of moisture absorption on plain bearings Diagram 10: Effect of moisture absorption
 
X = Moisture absorption [weight %]
Y = Reduction of inside diameter [%]

humidity absorption / moisture absorption

The humidity absorption of iglidur® 200 bearings amounts to about 0,9% in standard climatic conditions. The saturation limit in water is 4,9 %. This should be considered according to application conditions.

Diameter
d1 [mm]
Shaft h9
[mm]
iglidur® Q
E10 [mm]
Housing H7
[mm]
Up to 3 0 - 0,025 +0,014 +0,054 0 +0,010
> 3 to 6 0 - 0,030 +0,020 +0,068 0 +0,012
> 6 to 10 0 - 0,036 +0,025 +0,083 0 +0,015
> 10 to 18 0 - 0,043 +0,032 +0,102 0 +0,018
> 18 to 30 0 - 0,052 +0,040 +0,124 0 +0,021
> 30 to 50 0 - 0,062 +0,050 +0,150 0 +0,025
> 50 to 80 0 - 0,074 +0,060 +0,180 0 +0,030
> 80 to 120 0 - 0,087 +0,072 +0,212 0 +0,035
> 120 to 180 0 - 0,100 +0,085 +0,245 0 +0,040

Table 07: Important tolerances for iglidur® Q bearings according to ISO 3547-1 after the press-fit.

Installation tolerances

iglidur® Q bearings are standard bearings for shafts with h-tolerance (recommended minimum 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 E10 tolerance. In certain dimensions the tolerance in dependence on the wall thickness deviates from this (See delivery program).


The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "igutex", "kineKIT", "manus", "motion plastics", "pikchain", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsubishi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention on this website. The products offered by igus® are those of igus® GmbH