Page 209 - IGUS Bearing

iglidur J350 iglidur J350
®
®
+180 °C +180 °C
60MPa 60MPa
Bearing technology | Plain bearings | iglidur J350 Technical data
®
Permissible surface speeds Installation tolerances 100.0 0.40
iglidur J350 plain bearings are suitable for low and iglidur J350 plain bearings are standard bearings for 10.0 0.30
®
®
medium speeds in rotating and oscillating applications. shafts with h tolerance (recommended minimum h9). The
The wear rates, however, are much better in the case bearings are designed for press-fit into a housing machined 1.0 0.20
of rotating applications. Good bearing support for linear to a H7 tolerance. After being assembled into a nominal
movements is also possible with iglidur J350. size housing, the inner diameter automatically adjusts to Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0.10
®
Surface speed, page 48 the F10 tolerances. For particular dimensions the tolerance
differs depending on the wall thickness (please see product 0.01 0.00
Temperature range table). 0.001 0.01 0.1 1.0 10.0 0 10 20 30 40 50 60
The temperatures prevailing in the bearing system also have Testing methods, page 61 Surface speed [m/s] Load [MPa]
®
an influence on the wear. The wear-rate of iglidur J350 Diagram 01: Permissible pv values for iglidur J350 with a Diagram 05: Coefficient of friction as a function of the
®
bearings changes very little at high temperatures. In some wall thickness of 1mm dry operation against a steel shaft at pressure, v = 0.01m/s
cases, wear even decreases at +100°C. For temperatures Chemicals Resistance +20°C, mounted in a steel housing
over +140°C an additional securing is required. Alcohols +
Application temperatures, page 53 Diluted acids + 80 0.40
Additional securing, page 53 Diluted alkalines + 0.35
Fuels + 60
Friction and wear Greases, oils without additives + 0.30
The coefficient of friction of iglidur J350 in dry operation Hydrocarbons + up to 0 40 0.25
®
against steel is very good. They decrease significantly at Strong acids + up to 0 20 Coefficient of friction [µ] 0.20
higher surface speeds. This benefits the service life of the Strong alkalines + 0.15
plain bearings in continuous operations with high surface All data given at room temperature [+20°C] Load [MPa] 0 0.00
speeds. Diagram 04 shows this inverse relationship. Table 02: Chemical resistance 20 40 60 80 100 120 140 160 180 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Especially with loads higher than 2MPa, the iglidur J350 Chemical table, page 1170 Temperature [°C] Shaft surface finish Ra [µm]
®
plain bearings are clearly superior to other bearings in Diagram 02: Maximum recommended surface pressure as a Diagram 06: Coefficient of friction as a function of the shaft
rotating applications. Rotating Oscillating linear function of temperature (60MPa at +20°C) surface (Cf53 shaft)
Coefficient of friction and surfaces, page 51 Long-term m/s 1.3 1.0 4.0
Wear resistance, page 54 Short-term m/s 3.0 2.3 8.0 6 3.0
Table 03: Maximum surface speeds 5 2.5
Shaft materials 4 +23°C
Diagram 06 and 07 display a summary of the results of Dry Greases Oil Water +60°C 2.0
tests with different shaft materials executed with plain Coefficient of friction μ 0.10-0.20 0.09 0.04 0.04 3 1.5 Free cutting steel Cf53, hard chromed 304 stainless steel
®
®
bearings made of iglidur J350. iglidur J350 plain bearings Table 04: Coefficient of friction against steel (Ra = 1μm, 2 1.0 H.a. aluminium HR carbon steel High grade steel
can be combined with various shaft materials. One shaft - 50HRC) Deformation [%] 1 Wear [µm/km] 0.5 Cf53 steel
bearing combination stands out when looking at the wear 0 0.0
results of the test: iglidur J350 with soft 304 stainless Housing Plain bearings Shaft 0 10 20 30 40 50 60
®
steel. Not many bearing materials are suitable for use with Ø d1 [mm] H7 [mm] F10 [mm] h9 [mm] Load [MPa]
this rather difficult soft stainless steel material (304 stainless 0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear, rotating with different shaft materials,
steel) and achieve good wear results. Also, good properties > 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000 pressure, p = 1MPa, v = 0.3m/s
are reached with hard-anodised aluminium shafts. If the > 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000
shaft material you plan on using is not shown in these test > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000 0.30
results, please contact us. > 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000 0.25
Shaft materials, page 56 > 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 0.20
> 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 0.15
Table 05: Important tolerances for plain bearings according 0.10
to ISO 3547-1 after press-fit 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50

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

206 3D-CAD, finder and service life calculation ... www.igus-asean.com/J350 Lubrication-free made easy ... from stock ... no minimum order quantity 207