Page 391 - IGUS Bearing

iglidur H3 iglidur H3
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+200°C +200°C
40MPa 40MPa
Bearing technology | Plain bearings | iglidur H3 Technical data
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Permissible surface speeds Chemicals Resistance 100.0 0.20
Due to their excellent coefficient of friction, rotating surface Alcohols + 10.0 0.15
speeds of up to 2.0m/s are possible with iglidur H3 plain Diluted acids + up to 0
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bearings in dry operation. Linear speeds up to 5.0m/s Diluted alkalines + 1.0 0.10
can be attained. The speeds stated in table 03 are limit Fuels +
values for the lowest bearing loads. With higher loads, the Greases, oils without additives + Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.05
permitted speed drops with the extent of the load due to Hydrocarbons +
the limitations by the pv value. Strong acids + up to – 0.01 0.001 0.01 0.1 1.0 10.0 0.00
Surface speed, page 48 Strong alkalines + up to – 0 10 20 30 40 50 60 70 80
Surface speed [m/s] Load [MPa]
All data given at room temperature [+20°C]
Temperature Diagram 01: Permissible pv values for iglidur H3 plain Diagram 05: Coefficient of friction as a function of the
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iglidur H3 is an extremely temperature-resistant material. Table 02: Chemical resistance bearing with a wall thickness of 1mm dry operation against pressure, v = 0.01m/s
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Chemical table, page 1170
The temperatures prevailing in the bearing system also have a steel shaft at +20°C, mounted in a steel housing.
an influence on the wear. The wear rises with increasing Rotating Oscillating linear
temperatures. In the case of iglidur H3 in particular, Long-term m/s 1.0 0.7 4.0 80 1.0
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however, this increase is very small. For temperatures over Short-term m/s 1.5 1.1 6.0 70
+80°C an additional securing is required. 60 0.8
Application temperatures, page 53 Table 03: Maximum surface speeds 50 0.6
Additional securing, page 53 40 Cf53, hard chromed
Dry Greases Oil Water 30 0.4 H.a. aluminium Free cutting steel HR carbon steel 304 stainless steel High grade steel
Coefficient of friction μ 0.08-0.17 0.09 0.04 0.04 20 Cf53 steel
Friction and wear Table 04: Coefficient of friction against steel (Ra = 1μm, 10 Wear [µm/km] 0.2
The coefficient of friction alters similarly to the wear Load [MPa] 0 0.0
resistance with increasing load and surface speed 50HRC) 20 50 80 120 150 200
(diagrams 04 and 05). Housing Plain bearings Shaft Temperature [°C]
Coefficient of friction and surfaces, page 51 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,
Wear resistance, page 54 function of temperature (80MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000
> 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000
Shaft materials > 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000 7 7
Diagram 06 and 07 display a summary of the results of > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000 6 6 rotating
oscillating
tests with different shaft materials executed with plain > 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000 5 +23°C +60°C 5
bearings made of iglidur H3. The iglidur H3 plain > 30-50 +0.000 +0.025 +0.025 +0.125 -0.062 +0.000 4 4
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bearings display excellent wear behaviour in combination > 50-80 +0.000 +0.030 +0.030 +0.150 -0.074 +0.000 3 3
with a wide variety of shaft materials both in rotating and > 80-120 +0.000 +0.035 -0.036 +0.176 -0.087 +0.000 2 2
pivoting applications. On the 304 stainless steel shafts in > 120-180 +0.000 +0.040 +0.043 +0.203 +0.000 +0.100 Deformation [%] 1 Wear [µm/km] 1
particular, iglidur H3 attains very low wear rates both in 0 0
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rotating and pivoting operations. Even on hard-anodised Table 05: Important tolerances for plain bearings according 0 20 40 60 80 Cf53 hard 304SS HR carbon
aluminium shafts, iglidur H3 plain bearings attain long to ISO 3547-1 after press-fit Load [MPa] chromed steel
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service life in rotating applications with low to medium Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for rotating and oscillating applications
loads. with different shaft materials, p = 2MPa
Shaft materials, page 56
0.25
Installation tolerances 0.20
iglidur H3 plain bearings are standard bearings for 0.15
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shafts with h-tolerance (recommended minimum h9).
The bearings are designed for press-fit into a housing Coefficient of friction [µ] 0.10
machined to a H7 tolerance. After being assembled into a 0.05
nominal size housing, in standard cases the inner diameter
automatically adjusts to the F10 tolerances. For particular 0.00
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
dimensions the tolerance differs depending on the wall Surface speed [m/s]
thickness (please see product range table).
Testing methods, page 61 ASEAN 09/2023 ASEAN 09/2023 Diagram 04: Coefficient of friction as a function of the
surface speed, p = 0.75MPa

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