Page 599 - IGUS Bearing

iglidur G V0 iglidur G V0
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+130°C +130°C
75MPa 75MPa
Bearing technology | Plain bearings | iglidur G V0 Technical data
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Temperature Installation tolerances 100.0 0.35
The ambient temperatures strongly influence the properties iglidur G V0 plain bearings are standard bearings for 10.0 0.30
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of plain bearings. The short-term maximum temperature shafts with h-tolerance (recommended minimum h9). The 0.25
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permitted is +210°C and allows the use of iglidur G V0 bearings are designed for press-fit into a housing machined 1.0 0.20
plain bearings in applications where the bearings are not to a H7 tolerance. After being assembled into a nominal 0.15
subjected to any additional load such as a paint drying size housing, the inner diameter automatically adjusts to Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.10
process. The temperatures prevailing in the bearing the E10 tolerances. 0.05
system also have an influence on the wear. With increasing Testing methods, page 61 0.01 0.001 0.01 0.1 1.0 10.0 0.00 0 10 20 30 40 50 60 70 80
temperatures, the wear increases and this effect is significant
when temperatures rise over +120°C. For temperatures Surface speed [m/s] Load [MPa]
over +100°C an additional securing is required. Chemicals Resistance Diagram 01: Permissible pv values for iglidur G V0 plain Diagram 05: Coefficient of friction as a function of the
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Application temperatures, page 53 Alcohols + up to 0 bearing with a wall thickness of 1 mm dry operation against pressure, v = 0.01m/s
Additional securing, page 53 Diluted acids 0 up to – a steel shaft at +20°C, mounted in a steel housing.
Diluted alkalines +
Friction and wear Fuels + 120 9
Similar to wear resistance, the coefficient of friction μ Greases, oils without additives + 100 8
also changes with the load. The coefficient of friction Hydrocarbons + 7
6
decreases considerably with increasing loads, whereas a Strong acids – 80 5
slight increase in surface speed causes an increase of the Strong alkalines 0 60 4 Free cutting steel Cf53, hard chromed 304 stainless steel
coefficient of friction. This relationship explains the excellent All data given at room temperature [+20°C] 40 3 H.a. aluminium HR carbon steel High grade steel
results of iglidur G V0 plain bearings for high loads and Table 02: Chemical resistance 20 Wear [µm/km] 2 Cf53 steel
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low speeds (diagrams 04 and 05). Chemical table, page 1170 Load [MPa] 0 0
Coefficient of friction and surfaces, page 51 20 30 40 50 60 70 80 90 100 110 120 130
Wear resistance, page 54 Rotating Oscillating linear Temperature [°C]
Long-term m/s 1.0 0.7 4.0 Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
Shaft materials Short-term m/s 2.0 1.4 5.0 function of temperature (75MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
The friction and wear are also dependent, to a large Table 03: Maximum surface speeds
degree, on the mating partner. Shafts that are too smooth 10 200
increase both the coefficient of friction and the wear of the Dry Greases Oil Water 180 rotating
oscillating
bearing. For iglidur G V0 a ground surface with an average Coefficient of friction μ 0.07-0.20 0.09 0.04 0.04 8 +23°C 160
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surface finish Ra = 0.6-0.8µm is recommended. Diagram Table 04: Coefficient of friction against steel (Ra = 1μm, 6 +60°C 120
06 shows results of testing different shaft materials with 50HRC) 4 100
80
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plain bearings made from iglidur G V0. It is important 60
to notice that with increasing loads, the recommended Housing Plain bearings Shaft Deformation [%] 2 Wear [µm/km] 40
20
hardness of the shaft increases. The "soft" shafts tend Ø d1 [mm] H7 [mm] E10 [mm] h9 [mm] 0 0
to wear themselves and thus increase the wear of the 0-3 +0.000 +0.010 +0.014 +0.054 -0.025 +0.000 0 25 50 75 100 0 5 10 15 20 25 30 35 40 45
overall system. If the loads exceed 2MPa it is important to > 3-6 +0.000 +0.012 +0.020 +0.068 -0.030 +0.000 Load [MPa] Load [MPa]
recognise that the wear rate (the gradient of the curves) > 6-10 +0.000 +0.015 +0.025 +0.083 -0.036 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
clearly decreases with the hard shaft materials. The > 10-18 +0.000 +0.018 +0.032 +0.102 -0.043 +0.000 with shaft material Cf53 hardened and ground steel, as a
comparison of rotation and pivoting shows that iglidur G > 18-30 +0.000 +0.021 +0.040 +0.124 -0.052 +0.000 function of the load
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V0 provides advantages in pivoting movements (diagram > 30-50 +0.000 +0.025 +0.050 +0.150 -0.062 +0.000 0.5
07). If the shaft material you plan on using is not shown > 50-80 +0.000 +0.030 +0.060 +0.180 -0.074 +0.000 0.4
Coefficient of friction [µ]
in these test results, please contact us. > 80-120 +0.000 +0.035 +0.072 +0.212 -0.087 +0.000 0.3
Shaft materials, page 56 > 120-180 +0.000 +0.040 +0.085 +0.245 -0.100 +0.000
Table 05: Important tolerances for plain bearings according 0.2
to ISO 3547-1 after press-fit 0.1

0.0
0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Surface speed [m/s]
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 1MPa
Diagram 04: Coefficient of friction as a function of the

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