Page 465 - IGUS Bearing

iglidur T220 iglidur T220
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+100°C +100°C
40MPa 40MPa
Bearing technology | Plain bearings | iglidur T220 Technical data
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Permissible surface speeds Chemicals Resistance 100.0 0,7
The maximum speeds of iglidur T220 plain bearings Alcohols + 10.0 0,6
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when rotating continuously is 0.4 m/s. The friction and Diluted acids 0 0,5
the associated temperature increase limit the permissible Diluted alkalines – 1.0 0,4
speeds. From this it follows that intermittent service or in Fuels + 0,3
linear movements, higher speeds can be attained. Greases, oils without additives + Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0,2
Surface speed, page 48 Hydrocarbons – 0.01 0,1
0,0
Strong acids – 0.001 0.01 0.1 1.0 10.0
Temperature Strong alkalines – 0 10 20 30 40 50 60 70 80
The flexibility of the bearings depends on the temperature. Surface speed [m/s] Load [MPa]
Even temperatures as low as +60°C lead to a considerable All data given at room temperature [+20°C] Diagram 01: Permissible pv values for iglidur T220 with a Diagram 05: Coefficient of friction as a function of the
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increase in flexibility. For temperatures over +50°C an Table 02: Chemical resistance wall thickness of 1mm dry operation against a steel shaft at pressure, v = 0.01m/s
Chemical table, page 1170
additional securing is required. +20°C, mounted in a steel housing
Application temperatures, page 53 Rotating Oscillating linear
Additional securing, page 53
Long-term m/s 0.4 0.3 1.0 120 7.0
Short-term m/s 1.0 0.7 2.0 100 6.0
Friction and wear 5.0
By the observance of the tobacco processing industry Table 03: Maximum surface speeds 80 4.0
specifications, the coefficient of friction and wear of Dry Greases Oil Water 60 3.0 Free cutting steel Cf53, hard chromed 304 stainless steel
iglidur T220 plain bearings remain behind those of the Coefficient of friction μ 0.20-0.32 0.09 0.04 0.04 40 2.0 H.a. aluminium HR carbon steel High grade steel
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best iglidur plain bearings. The coefficient of friction Table 04: Coefficient of friction against steel (Ra = 1μm, 20 Wear [µm/km] 1.0 Cf53 steel
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decreases with the load and increases only slightly with Load [MPa] 0 0.0
higher speeds. 50HRC) 20 30 40 50 60 70 80 90 100
Coefficient of friction and surfaces, page 51 Housing Plain bearings Shaft Temperature [°C]
Wear resistance, page 54 Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
Ø d1 [mm] H7 [mm] E10 [mm] h9 [mm]
function of temperature (40MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
0-3 +0.000 +0.010 +0.014 +0.054 -0.025 +0.000
Shaft materials > 3-6 +0.000 +0.012 +0.020 +0.068 -0.030 +0.000
Diagram 06 shows a summary of the results of tests with > 6-10 +0.000 +0.015 +0.025 +0.083 -0.036 +0.000 12.8 100
different shaft materials executed with plain bearings made > 10-18 +0.000 +0.018 +0.032 +0.102 -0.043 +0.000 rotating
of iglidur T220. Diagram 07 shows that the bearings react > 18-30 +0.000 +0.021 +0.040 +0.124 -0.052 +0.000 10.0 +23°C 80 oscillating
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with a heavy increase in wear when the load is increased. > 30-50 +0.000 +0.025 +0.050 +0.150 -0.062 +0.000 +60°C 60
Therefore care should be taken to maintain the loads under > 50-80 +0.000 +0.030 +0.060 +0.180 -0.074 +0.000 5.0 40
5MPa through adequate dimensioning of the bearing. > 80-120 +0.000 +0.035 +0.072 +0.212 -0.087 +0.000 2.1
Shaft materials, page 56 Deformation [%] 20
> 120-180 +0.000 +0.040 +0.085 +0.245 -0.100 +0.000 Wear [µm/km]
Table 05: Important tolerances for plain bearings according 0.0 0
Installation tolerances 0 15 30 45 0 1 2 3 4 5 6
iglidur T220 plain bearings are standard bearings for to ISO 3547-1 after press-fit Load [MPa] Load [MPa]
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shafts with h tolerance (recommended minimum h9). The Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
bearings are designed for press-fit into a housing machined with shaft material Cf53 hardened and ground steel, as a
to a H7 tolerance. After being assembled into a nominal function of the load
size housing, the inner diameter automatically adjusts to 0.5
the E10 tolerances. For particular dimensions the tolerance 0.4
differs depending on the wall thickness (please see product
range table). 0.3
Testing methods, page 61 Coefficient of friction [µ] 0.2

Product range
iglidur T220 plain bearings are manufactured to special 0.1
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0.10
0.05
order. Surface speed [m/s] 0.15 0.20 0.25 0.30
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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