Page 606 - IGUS Bearing

iglidur J2 iglidur J2
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+90°C +90°C
46MPa 46MPa
Bearing technology | Plain bearings | iglidur J2 Technical data
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Permissible surface speeds Installation tolerances 100.0 0.30
iglidur J2 is mainly suitable for low surface speeds in iglidur J2 plain bearings are standard bearings for shafts 10.0 0.25
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dry operation, but the specified values shown in table with h-tolerance (recommended minimum h9). The
03 can only be achieved at very low pressures. At the bearings are designed for press-fit into a housing machined 1.0 0.20
given speeds, friction can cause a temperature increase to a H7 tolerance. After being assembled into a nominal
to maximum permissible levels. In practice, though, this size housing, the inner diameter automatically adjusts to Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.15
level is rarely reached due to varying application conditions. the E10 tolerances. In relation to the installation tolerance,
Surface speed, page 48 the inner diameter changes with the absorption of humidity. 0.01 0.001 0.01 0.1 1.0 10.0 0.10 0 5 10 15 20 25 30 40
Testing methods, page 61
Temperature Surface speed [m/s] Load [MPa]
The temperatures prevailing in the bearing system also have Diagram 01: Permissible pv values for iglidur J2 plain Diagram 05: Coefficient of friction as a function of the
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an influence on the wear. With increasing temperatures, Chemicals Resistance bearing with a wall thickness of 1mm dry operation against pressure, v = 0.01m/s
the wear increases and this effect is significant when Alcohols + a steel shaft at +20°C, mounted in a steel housing
temperatures rise over +90°C. For temperatures over Diluted acids 0 up to –
+60°C an additional securing is required. Diluted alkalines + 70 10.0
Application temperatures, page 53 Fuels + 60
Additional securing, page 53 Greases, oils without additives + 50 8.0
Hydrocarbons + 40 6.0
Friction and wear Strong acids – 30 4.0 Free cutting steel Cf53, hard chromed 304 stainless steel
Coefficient of friction and wear resistance are dependent Strong alkalines + up to 0 20 H.a. aluminium HR carbon steel High grade steel
on the application parameters (diagrams 04 and 05). All data given at room temperature [+20°C] 10 Wear [µm/km] 2.0 Cf53 steel
Coefficient of friction and surfaces, page 51 Table 02: Chemical resistance Load [MPa] 0 0.0
Wear resistance, page 54 Chemical table, page 1170 20 30 40 50 60 70 80 90
Temperature [°C]
Shaft materials Rotating Oscillating linear Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
The friction and wear are also dependent, to a large Long-term m/s 0.8 0.7 3.0 function of temperature (46MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
degree, on the mating partner. Shafts that are too smooth Short-term m/s 1.9 1.1 5.0
increase both the coefficient of friction and the wear of Table 03: Maximum surface speeds 10 400
the bearing. Diagram 06 shows results of testing different 350 rotating
shafts. Diagram 06 shows that iglidur J2 delivers good Dry Greases Oil Water 8 +23°C 300 oscillating
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coefficient of wear especially with free cutting steel in Coefficient of friction μ 0.11-0.27 0.08 0.07 0.04 6 +60°C 250
rotation at 1MPa. In dry operation, the coefficient of wear Table 04: Coefficient of friction against steel (Ra = 1μm, 4 200
150
is sometimes significantly higher on other shafts. Unlike 50HRC) 100
many other iglidur materials, the wear rate in pivoting Deformation [%] 2 Wear [µm/km] 50
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is slightly higher compared to the rate in rotation with Housing Plain bearings Shaft 0 0
otherwise identical parameters (diagram 07). Ø d1 [mm] H7 [mm] E10 [mm] h9 [mm] 0 5 10 15 20 25 30 35 40 45 5 10 20 30 40
Shaft materials, page 56 0-3 +0.000 +0.010 +0.014 +0.054 -0.025 +0.000 Load [MPa] Load [MPa]
> 3-6 +0.000 +0.012 +0.020 +0.068 -0.030 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
> 6-10 +0.000 +0.015 +0.025 +0.083 -0.036 +0.000 with shaft material Cf53 hardened and ground steel, as a
> 10-18 +0.000 +0.018 +0.032 +0.102 -0.043 +0.000 function of the load
> 18-30 +0.000 +0.021 +0.040 +0.124 -0.052 +0.000 0.25
> 30-50 +0.000 +0.025 +0.050 +0.150 -0.062 +0.000
> 50-80 +0.000 +0.030 +0.060 +0.180 -0.074 +0.000 0.20
> 80-120 +0.000 +0.035 +0.072 +0.212 -0.087 +0.000
> 120-180 +0.000 +0.040 +0.085 +0.245 -0.100 +0.000 Coefficient of friction [µ] 0.15
Table 05: Important tolerances for plain bearings according
to ISO 3547-1 after press-fit 0.10
0.2
0.3
0.1
Surface speed [m/s] 0.4 0.5 0.6 0.7 0.8 0.9 1.0
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 1MPa
Diagram 04: Coefficient of friction as a function of the

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