Page 106 - IGUS Bearing

iglidur G1 iglidur G1
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+180 °C +180 °C
91MPa 91MPa
Bearing technology | Plain bearings | iglidur G1 Technical data
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Permissible surface speeds Installation tolerances 100.0 0.35
iglidur G1 has been developed for low to medium surface iglidur G1 plain bearings are standard bearings for 10.0 0.30
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speeds. The maximum values shown in table 03 can only shafts with h-tolerance (recommended minimum h9). 0.25
be achieved at low pressures. At the given speeds, friction The bearings are designed for press-fit into a housing 1.0 0.20
can cause a temperature increase to maximum permissible machined to a H7 tolerance. After being assembled into a 0.15
levels. In practice, though, this level is rarely reached due nominal size housing, in standard cases the inner diameter Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.10
to varying application conditions. automatically adjusts to the F10 tolerances. For particular 0.05
0.00
Surface speed, page 48 dimensions the tolerance differs depending on the wall 0.01 0.001 0.01 0.1 1.0 10.0 0 10 20 30 40 50 60 70 80
thickness (please see product range table).
Temperature Testing methods, page 61 Surface speed [m/s] Load [MPa]
The ambient temperatures strongly influence the properties Diagram 01: Permissible pv values for iglidur G plain bearing Diagram 05: Coefficient of friction as a function of the
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of plain bearings. The temperatures prevailing in the with a wall thickness of 1mm dry operation against a steel pressure, v = 0.01m/s
bearing system also have an influence on the wear. With Chemicals Resistance shaft at +20°C, mounted in a steel housing.
increasing temperatures, the wear increases and this effect Alcohols + up to 0
is significant when temperatures rise over +120°C. For Diluted acids 0 up to – 100 6
temperatures over 120°C an additional securing of the Diluted alkalines + 5
bearings in the housing is required. Fuels + 80
Application temperatures, page 53 Greases, oils without additives + 60 4
Additional securing, page 53 Hydrocarbons + 40 3 Free cutting steel Cf53, hard chromed 304 stainless steel
Strong acids – 2 H.a. aluminium HR carbon steel High grade steel
Friction and wear Strong alkalines 0 20 Wear [µm/km] 1 Cf53 steel
The coefficient of friction μ of a plain bearing among other All data given at room temperature [+20°C] Load [MPa] 0 0
factors is influenced by the surface speed and the load Table 02: Chemical resistance 20 40 60 80 100 120 140 160 180
(diagrams 04 and 05). Chemical table, page 1170 Temperature [°C]
Coefficient of friction and surfaces, page 51 Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
Wear resistance, page 54 Rotating Oscillating linear function of temperature (91MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
Long-term m/s 1.3 1.0 5.0
Shaft materials Short-term m/s 2.5 1.8 6.0 10 200
The friction and wear are also dependent, to a large Table 03: Maximum surface speeds 180 rotating
oscillating
degree, on the mating partner. Shafts that are too smooth 8 +23°C 160
140
increase both the coefficient of friction and the wear of the Dry Greases Oil Water 6 +60°C 120
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bearing. For iglidur G1 a ground surface with an average Coefficient of friction μ 0.10-0.29 0.09 0.04 0.04 4 100
80
surface finish Ra = 0.8µm is recommended. Diagram 06 Table 04: Coefficient of friction against steel (Ra = 1μm, 60
shows results of testing different shaft materials with plain 50HRC) Deformation [%] 2 Wear [µm/km] 40
20
bearings made from iglidur G1. It can be observed that 0 0
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iglidur G1 achieves good to very good wear results with Housing Plain bearings Shaft 0 25 50 75 100 0 10 20 30 40 50 60 70 80
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all shaft materials. The results for stainless steel types are Ø d1 [mm] H7 [mm] F10 [mm] h9 [mm] Load [MPa] Load [MPa]
most likely slightly lower. Diagram 07 compares the wear 0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
in rotating and pivoting applications. As with many of the > 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000 with shaft material Cf53 hardened and ground steel, as a
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iglidur materials, wear rate is better in pivoting applications. > 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000 function of the load
Shaft materials, page 56 > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000 0.4
> 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000 0.3
> 30-50 +0.000 +0.025 +0.025 +0.125 -0.062 +0.000
> 50-80 +0.000 +0.030 +0.030 +0.150 -0.074 +0.000 0.2
> 80-120 +0.000 +0.035 -0.036 +0.176 -0.087 +0.000 Coefficient of friction [µ]
> 120-180 +0.000 +0.040 +0.043 +0.203 +0.000 +0.100 0.1
Table 05: Important tolerances for plain bearings according 0.0
to ISO 3547-1 after press-fit 0.1 0.5 0.7 1.0 1.2 1.5 2.0

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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