Page 497 - IGUS Bearing

iglidur Q iglidur Q
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+135°C +135°C
100MPa 100MPa
Bearing technology | Plain bearings | iglidur Q Technical data
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Permissible surface speeds Chemicals Resistance 100.0 0.4
Under extreme radial loads, the iglidur Q plain bearings Alcohols + up to 0 10.0 0.3
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can reach the maximum pv values which are possible Diluted acids 0 up to –
during dry operation with plain bearings. Although iglidur Q Diluted alkalines + 1.0 0.2
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plain bearings have the greatest advantages under high Fuels +
loads and at low speeds, high surface speeds are also Greases, oils without additives + Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.1
attainable due to the excellent coefficient of friction of these Hydrocarbons +
bearings. The given values in table 03 indicate the limits Strong acids – 0.01 0.001 0.01 0.1 1.0 10.0 0.0
at which an increase up to the continuous permissible Strong alkalines 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
temperature occurs. This increase is a result of friction. Surface speed [m/s] Load [MPa]
Surface speed, page 48 All data given at room temperature [+20°C] Diagram 01: Permissible pv values for iglidur Q plain bearing Diagram 05: Coefficient of friction as a function of the
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Table 02: Chemical resistance
Chemical table, page 1170 with a wall thickness of 1 mm dry operation against a steel pressure, v = 0.01m/s
Temperature shaft at +20°C, mounted in a steel housing
Plain bearings made from iglidur Q retain their excellent Rotating Oscillating linear
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wear resistance even at high temperatures. For temperatures Long-term m/s 1.0 0.7 5.0 120 60
over +50°C an additional securing is required. It should Short-term m/s 2.0 1.4 6.0 100 50
also be noted that the coefficient of friction increases
considerably at temperatures above approximately Table 03: Maximum surface speeds 80 40
+100°C. Dry Greases Oil Water 60 30 St52 salt bath nitrocarburised 16MnCr5 yellow galvanised 20MnV6, unhardened, hard chrome-plated 38MnV S6, hardened, hard-chrome plated
Application temperatures, page 53 Coefficient of friction μ 0.05-0.15 0.09 0.04 0.04 40 20 St52 gas nitrified St52 galvanised
Additional securing, page 53 20 10 St52
Table 04: Coefficient of friction against steel (Ra = 1μm, Load [MPa] Wear [µm/km] C45
50HRC) 0 0
Friction and wear 20 40 60 80 100 120 135
Many plastic bearings feature decreasing coefficient of Housing Plain bearings Shaft Temperature [°C]
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friction with increasing pressure in dry operation. iglidur Q Ø d1 [mm] H7 [mm] E10 [mm] h9 [mm] Diagram 02: Maximum recommended surface pressure as a Diagram 06: wear, pivoting with different shaft materials,
goes further than most, under high pressures the material 0-3 +0.000 +0.010 +0.014 +0.054 -0.025 +0.000 function of temperature (100MPa at +20°C) pressure p = 30MPa, v = 0.01m/s
gives excellent low coefficient of friction (diagrams 04 and > 3-6 +0.000 +0.012 +0.020 +0.068 -0.030 +0.000
05). > 6-10 +0.000 +0.015 +0.025 +0.083 -0.036 +0.000 7 200
Coefficient of friction and surfaces, page 51 > 10-18 +0.000 +0.018 +0.032 +0.102 -0.043 +0.000 6 180 rotating
oscillating
Wear resistance, page 54 5 +23°C 160
> 18-30 +0.000 +0.021 +0.040 +0.124 -0.052 +0.000 +60°C 140
> 30-50 +0.000 +0.025 +0.050 +0.150 -0.062 +0.000 4 120
100
Shaft materials > 50-80 +0.000 +0.030 +0.060 +0.180 -0.074 +0.000 3 80
Diagram 06 shows results of testing different shaft > 80-120 +0.000 +0.035 +0.072 +0.212 -0.087 +0.000 2 60
materials with plain bearings made from iglidur Q. The > 120-180 +0.000 +0.040 +0.085 +0.245 -0.100 +0.000 Deformation [%] 1 Wear [µm/km] 40
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20
strengths offered by iglidur heavy-duty materials become 0 0
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clear from 30MPa. iglidur Q stands out in particular. Other Table 05: Important tolerances for plain bearings according 0 25 50 75 100 0 10 20 30 40 50 60 70 80 90 100
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heavy-duty materials such as iglidur Q2 and TX1 only offer to ISO 3547-1 after press-fit Load [MPa] Load [MPa]
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the best performances in terms of wear when subjected Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
to even higher loads. iglidur Q offers strikingly good wear with shaft material Cf53 hardened and ground steel, as a
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properties on many different shaft materials. function of the load
Shaft materials, page 56 0.4

Installation tolerances 0.3
iglidur Q plain bearings are standard bearings for shafts 0.2
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with h-tolerance (recommended minimum h9). After being Coefficient of friction [µ]
assembled into a nominal size housing, the inner diameter 0.1
automatically adjusts to the E10 tolerances. For particular
dimensions the tolerance differs depending on the wall 0.0
0.05
0.10
thickness (please see product range table). Surface speed [m/s] 0.15 0.20 0.25 0.30 0.35
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 0.75MPa
Testing methods, page 61 Diagram 04: Coefficient of friction as a function of the

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