Page 285 - IGUS Bearing

iglidur E iglidur E
®
®
+90°C +90°C
37MPa 37MPa
Bearing technology | Plain bearings | iglidur E Technical data
®
Permissible surface speeds Installation tolerances 100.0 0.30
The low coefficient of friction and no stick-slip tendency iglidur E plain bearings are standard bearings for shafts 10.0 0.25
®
of iglidur E plain bearings are particularly important at with h-tolerance (recommended minimum h9). The 0.20
®
very low speeds. However, iglidur E can also be used bearings are designed for press-fit into a housing machined 1.0 0.15
®
for high speeds of over 1m/s. In both cases the static to a H7 tolerance. After being assembled into a nominal 0.10
friction is very low and stick slip does not occur. The size housing, the inner diameter automatically adjusts to Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.05
maximum values shown in table 03 can only be achieved the E10 tolerances. For particular dimensions the tolerance
at low pressures. At the given speeds, friction can cause differs depending on the wall thickness (please see product 0.01 0.001 0.01 0.1 1.0 10.0 0.00
a temperature increase to maximum permissible levels. In range table). 0 5 10 15 20 25 30 35
practice, though, this level is rarely reached due to varying Testing methods, page 61 Surface speed [m/s] Load [MPa]
application conditions. Diagram 01: Permissible pv values for iglidur E plain bearing Diagram 05: Coefficient of friction as a function of the
®
Surface speed, page 48 with a wall thickness of 1mm dry operation against a steel pressure, v = 0.01m/s
Chemicals Resistance shaft at +20°C, mounted in a steel housing.
Temperature Alcohols +
iglidur E plain bearings can be used between -50°C Diluted acids 0 up to – 40 1.2
®
and +90°C; the short-term maximum permissible temperature Diluted alkalines + 1.0
is +120°C. Wear increases significantly at temperatures Fuels + 30
above +80°C. For temperatures over +60°C an additional Greases, oils without additives + 0.8
securing is required. Hydrocarbons + 20 0.6 Free cutting steel Cf53, hard chromed 304 stainless steel
Application temperatures, page 53 Strong acids – 10 0.4 H.a. aluminium HR carbon steel High grade steel
Additional securing, page 53 Strong alkalines + up to 0 Wear [µm/km] 0.2 Cf53 steel
All data given at room temperature [+20°C] Load [MPa] 0 0.0
Friction and wear Table 02: Chemical resistance 20 30 40 50 60 70 80
Similar to wear resistance, the coefficient of friction µ also Chemical table, page 1170 Temperature [°C]
changes with the surface speed and load (diagrams 04 Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
and 05). Rotating Oscillating linear function of temperature (35MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
Coefficient of friction and surfaces, page 51 Long-term m/s 1.0 0.7 2.0
Wear resistance, page 54 Short-term m/s 1.5 1.1 4.0 12.5 3.5
Table 03: Maximum surface speeds 3.0 rotating
oscillating
Shaft materials 10.0 +23°C 2.5
The friction and wear are also dependent, to a large Dry Greases Oil Water 7.5 +60°C 2.0
degree, on the mating partner. With increasing shaft Coefficient of friction μ 0.08 -0.23 0.09 0.04 0.04 5.0 1.5
surface finish, the coefficient of friction also increases. For Table 04: Coefficient of friction against steel (Ra = 1μm, 1.0
iglidur E a ground surface with an average surface finish 50HRC) Deformation [%] 2.5 Wear [µm/km] 0.5
®
Ra = 0.1-0.3µm is recommended. Diagram 06 and 07 0.0 0.0
display a summary of the results of tests with different shaft Housing Plain bearings Shaft 0.0 12.5 25.0 37.5 50.0 Cf53 hard 304SS HR carbon
materials executed with plain bearings made of iglidur E. Ø d1 [mm] H7 [mm] E10 [mm] h9 [mm] Load [MPa] chromed steel
®
When compared to most other iglidur materials, iglidur E 0-3 +0.000 +0.010 +0.014 +0.054 -0.025 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for rotating and oscillating applications
®
®
plain bearings have very low wear results at low loads > 3-6 +0.000 +0.012 +0.020 +0.068 -0.030 +0.000 with different shaft materials, p = 2MPa
compared with all shaft materials tested. Also, for increa- > 6-10 +0.000 +0.015 +0.025 +0.083 -0.036 +0.000
sing loads up to 5 MPa, the wear resistance of iglidur E > 10-18 +0.000 +0.018 +0.032 +0.102 -0.043 +0.000 0.30
®
plain bearings is excellent. If the shaft material you plan on > 18-30 +0.000 +0.021 +0.040 +0.124 -0.052 +0.000 0.25
using is not shown in these test results, please contact us. > 30-50 +0.000 +0.025 +0.050 +0.150 -0.062 +0.000 0.20
Shaft materials, page 56 > 50-80 +0.000 +0.030 +0.060 +0.180 -0.074 +0.000 0.15
> 80-120 +0.000 +0.035 +0.072 +0.212 -0.087 +0.000 Coefficient of friction [µ] 0.10
> 120-180 +0.000 +0.040 +0.085 +0.245 -0.100 +0.000 0.05
Table 05: Important tolerances for plain bearings according 0.00
to ISO 3547-1 after press-fit 0.10 0.30 0.50 0.70 0.90

Surface speed [m/s]
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 1MPa
Diagram 04: Coefficient of friction as a function of the

282 3D-CAD, finder and service life calculation ... www.igus-asean.com/E Lubrication-free made easy ... from stock ... no minimum order quantity 283