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iglidur Q3E iglidur Q3E
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+100°C +100°C
135MPa 135MPa
Bearing technology | Plain bearings | iglidur Q3E Technical data
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Temperature Chemicals Resistance 1,000.0 350
iglidur Q3E is an extremely temperature-resistant material. Alcohols + 100.0 300 rotating
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oscillating
The long-term upper temperature limit of +100°C permits Diluted acids 0 up to – 250
the broad use.in applications typical for the agricultural, Diluted alkalines + 10.0 200
utility vehicle or construction equipment sectors. With Fuels + 150
increasing temperatures, the compressive strength of Greases, oils without additives + Surface pressure [MPa] 1.0 100
iglidur Q3E plain bearings decreases. For temperatures Hydrocarbons + Wear [µm/km] 50
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over +75°C an additional securing is required. When Strong acids – 0.1 10.0 0 1 2 5 10 20 45 76
considering temperatures, the additional frictional heat in Strong alkalines 0 0.001 0.01 0.1 1.0 0 100 130
the bearing system must be taken into account. Surface speed [m/s] Load [MPa]
Application temperatures, page 53 All data given at room temperature [+20°C] Diagram 01: Permissible pv values for iglidur Q3E with a Diagram 05: Wear for oscillating and rotating applications
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Additional securing, page 53 Table 02: Chemical resistance wall thickness of 1mm dry operation against a steel shaft at with shaft material Cf53 hardened and ground steel, as a
Chemical table, page 1170
+20°C, mounted in a steel housing function of the load
Friction and wear Rotating Oscillating linear
The coefficient of friction alters similarly to the wear Long-term m/s 1.0 0.7 4.0 0.6
resistance with increasing load and surface speed Short-term m/s 2.0 1.4 5.0
(diagrams 04 and 05). 0.5
Coefficient of friction and surfaces, page 51 Table 03: Maximum surface speeds 0.4
Wear resistance, page 54
Dry Greases Oil Water 0.3
Coefficient of friction μ 0.22-0.42 0.09 0.04 0.04 Coefficient of friction [µ]
Shaft materials Table 04: Coefficient of friction against steel (Ra = 1μm, 0.2
In high load applications, we generally recommend the use 0.1
of hardened shafts. Furthermore, even at low to medium 50HRC) 0.1 0.3 0.5 0.7
loads, iglidur Q3E will attain increased service life with Housing Plain bearings Shaft Surface speed [m/s]
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"hard" shafts as compared to "soft" shafts. But for low load Ø d1 [mm] H7 [mm] E11 [mm] h9 [mm] Diagram 02: Coefficient of friction as a function of the surface
applications, the results are outstanding with free cutting 0-3 +0.000 +0.010 +0.014 +0.074 -0.025 +0.000 speed, p = 0.75MPa
steel as well. For high loads, the wear in pivoting applications > 3-6 +0.000 +0.012 +0.020 +0.095 -0.030 +0.000
is much lower than for rotation. If the shaft material you > 6-10 +0.000 +0.015 +0.025 +0.115 -0.036 +0.000 0.35
plan on using is not shown in these test results, please > 10-18 +0.000 +0.018 +0.032 +0.142 -0.043 +0.000 0.30
contact us. > 18-30 +0.000 +0.021 +0.040 +0.170 -0.052 +0.000 0.25
Shaft materials, page 56 0.20
> 30-50 +0.000 +0.025 +0.050 +0.210 -0.062 +0.000
> 50-80 +0.000 +0.030 +0.060 +0.250 -0.074 +0.000 0.15
Installation tolerances > 80-120 +0.000 +0.035 +0.072 +0.292 -0.087 +0.000 Coefficient of friction [µ] 0.10
iglidur Q3E plain bearings are standard bearings for > 120-180 +0.000 +0.040 +0.085 +0.335 -0.100 +0.000 0.05
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shafts with h-tolerance (recommended minimum h9). The 0.00
bearings are designed for press-fit into a housing machined Table 05: Important tolerances for plain bearings according 0 10 20 30 40 50 60 70 80
to a H7 tolerance. The tolerances are based on class E11. to ISO 3547-1 after press-fit Load [MPa]
After installing in a nominal size housing, the inner diameter Diagram 03: Coefficient of friction as a function of the
of the bearings is adjusted according to the specifications pressure, v = 0.01m/s
in the product range.
Testing methods, page 61 25
20
15

10 H.a. aluminium Free cutting steel Cf53, hard chromed HR carbon steel 304 stainless steel High grade steel
Wear [µm/km] 5 Cf53 steel

0

ASEAN 09/2023 ASEAN 09/2023 Diagram 04: Wear, pivoting with different shaft materials,

p = 1MPa, v = 0.3m/s

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