Page 341 - IGUS Bearing

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iglidur iglidur
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UW500 UW500
+250°C +250°C
140 MPa 140 MPa
Bearing technology | Plain bearings | iglidur UW500 Technical data
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Permissible surface speeds Chemicals Resistance 1,000 0,7
iglidur UW500 plain bearings can be used in applications Alcohols + 100 0,6
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involving dry operation as well as in liquids in a wide Diluted acids + 0,5
variety of applications. Due to hydrodynamic lubrication Diluted alkalines + 10 0,4
at high speeds, surface speeds far above 1.5m/s can be Fuels + 0,3
achieved. Greases, oils without additives + Surface pressure [MPa] 1 Coefficient of friction [µ] 0,2
Surface speed, page 48 Hydrocarbons + 0.1 0,1
0,0
Strong acids + 0.001 0.01 0.1 1.0 10.0 0 10 20 30 40 50 60 70 80
Temperature Strong alkalines +
iglidur UW500 can be used in applications where there Surface speed [m/s] Load [MPa]
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are continuous temperatures of +150°C. If the bearings All data given at room temperature [+20°C] Diagram 01: Permissible pv values for iglidur UW500 with a Diagram 05: Coefficient of friction as a function of the
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are mechanically secured, these temperatures can be even Table 02: Chemical resistance wall thickness of 1mm dry operation against a steel shaft at pressure, v = 0.01m/s
Chemical table, page 1170
higher than +200°C. iglidur UW500 belongs to the most +20°C, mounted in a steel housing
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temperature-resistant iglidur materials. For temperatures Rotating Oscillating linear
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over +150°C an additional securing is required. Long-term m/s 0.8 0.6 2.0 160 30
Application temperatures, page 53 Short-term m/s 1.5 1.1 3.0 140 25
Additional securing, page 53 120
Table 03: Maximum surface speeds 100 20
Friction and wear Dry Greases Oil Water 80 15 Free cutting steel Cf53, hard chromed 304 stainless steel
Diagrams 04 and 05 show the coefficient of friction of Coefficient of friction μ 0.20-0.36 0.09 0.04 0.04 60 10 H.a. aluminium HR carbon steel High grade steel
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iglidur UW500 plain bearings as a function of surface Table 04: Coefficient of friction against steel (Ra = 1μm, 20 Wear [µm/km] 5 Cf53 steel
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speed and pressure. The friction and wear are also Load [MPa] 0 0
dependent, to a large degree, on the mating partner. 50HRC) 20 50 80 120 150 200 250
Ground surfaces with an average surface finish Ra of 0.1 Housing Plain bearings Shaft Temperature [°C]
to 0.4µm are ideal. Ø d1 [mm] H7 [mm] F10 [mm] h9 [mm] Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
Coefficient of friction and surfaces, page 51 0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000 function of temperature (140MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
Wear resistance, page 54
> 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000
> 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000 15 200
Shaft materials > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000 +23°C 180 rotating
oscillating
Diagram 06 shows results of testing different shaft > 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000 10 +60°C 160
140
materials with plain bearings made from iglidur UW500. > 30-50 +0.000 +0.025 +0.025 +0.125 -0.062 +0.000 120
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Shaft materials, page 56 100
> 50-80 +0.000 +0.030 +0.030 +0.150 -0.074 +0.000 5 80
> 80-120 +0.000 +0.035 -0.036 +0.176 -0.087 +0.000 60
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Installation tolerances > 120-180 +0.000 +0.040 +0.043 +0.203 +0.000 +0.100 Deformation [%] Wear [µm/km] 20
iglidur UW500 plain bearings are standard bearings for 0 0
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shafts with h tolerance (recommended minimum h9). Table 05: Important tolerances for plain bearings according 0 50 100 140 0 1 2 3 4 5 6 7 8 9 10
The bearings are designed for press-fit into a housing to ISO 3547-1 after press-fit Load [MPa]
machined to a H7 tolerance. After being assembled into a Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
nominal size housing, in standard cases the inner diameter with shaft material Cf53 hardened and ground steel, as a
automatically adjusts to the F10 tolerances. For particular function of the load
dimensions the tolerance differs depending on the wall 0.5
thickness (please see product range table). 0.4
Coefficient of friction [µ]
Testing methods, page 61

Product range 0.3
iglidur UW500 plain bearings are manufactured to special 0.2
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order. 0.1
0.05
0.10
Surface speed [m/s] 0.15 0.20 0.25 0.30
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 0.75MPa
Diagram 04: Coefficient of friction as a function of the

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