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iglidur® HSD350 – material data
The most important specifications at a glance
iglidur HSD350 was specially developed for use in applications where decontamination by steam (e.g. in autoclaves) is necessary. iglidur HSD350 offers an excellent price-performance ratio.
| Descriptive technical specifications | ||
|---|---|---|
| Wear resistance at +23°C | - 🟧 🟧 🟧 🟧 ⬜️ + | More information on wear resistance |
| Wear resistance at +90°C | - 🟧 🟧 🟧 🟧 ⬜️ + | |
| Wear resistance at +150°C | - 🟧 🟧 🟧 ⬜️ ⬜️ + | |
| Slide property | - 🟧 🟧 🟧 🟧 🟧 + | Coefficient of friction, dynamic, against steel: µ 0.07 - 0.23 |
| Wear resistance under water | - 🟧 🟧 🟧 ⬜️ ⬜️ + | |
| Media resistance | - 🟧 🟧 🟧 🟧 🟧 + | More information on media resistance |
| Resistant to edge pressures | - 🟧 🟧 🟧 🟧 ⬜️ + | |
| Resistant to shock and impact loads | - 🟧 🟧 🟧 🟧 ⬜️ + | |
| Dirt resistance | - 🟧 🟧 🟧 ⬜️ ⬜️ + |
Temperatures
The ambient temperatures strongly influence the specifications of plain bearings. In accordance with its area of application as a material that can be sterilised with hot steam, iglidur HSD350 offers good thermal resistance. At temperatures above 130°C, a locating spigot of the bearing is required.
Temperatures, thermal expansion coefficient
| min. application temperature | Upper application temperature, long-term | Upper application temperature, short-term | In addition secure axially from |
|---|---|---|---|
| -40°C | +180°C | +210°C | +130°C |
Permissible surface speeds
Due to its relatively good thermal conductivity and thermal resistance, iglidur HSD350 is suitable for speeds in the medium range. The permissible surface speed decreases with increasing surface pressure.
Surface speeds of various iglidur materials
| Maximum surface speed [m/s] | Rotating | Oscillating | linear |
|---|---|---|---|
| Long-term | 1.1 | 0.8 | 3.0 |
| Short-term | 1.2 | 1.0 | 3.2 |
Permissible pv values
Diagram 01: Permissible pv values for iglidur HSD350 plain bearings with 1mm wall thickness in dry operation against a steel shaft, at +20°C, installed in a steel housing.
X = surface speed [m/s]
Y = pressure [MPa]
pv value, max. (dry)
MPa · m/s
0.30
<a 0="[" 1="o" 2="b" 3="j" 4="e" 5="c" 6="t" 7=" " 8="O" 9="b" 10="j" 11="e" 12="c" 13="t" 14="]" href="/de-de/website/gleitlager/wiki/p-x-v-wert-und-schmierung" uuid="f16b1d8b-0ff1-4a28-951c-3fbeec74eafd" target="_self">Information on pv value and lubrication
Mechanical specifications
The compressive strength of iglidur HSD350 plain bearings decreases with increasing temperatures. Diagram 02 illustrates this relationship. The maximum recommended surface pressure represents a mechanical material parameter. Conclusions about the tribology cannot be drawn from this. Diagram 03 shows the elastic deformation of iglidur under radial loads. Under the maximum recommended surface pressure of 30MPa, the deformation is less than 2%. Possible plastic deformation depends, among other things, on the duration of the impact.
Friction and wear
Diagram 04: Coefficients of friction as a function of the surface speed, p = 1MPa
X = surface speed [m/s]
Y = coefficient of friction μ
The coefficient of friction increases slowly and evenly over the speed, but remains below 0.3 up to a speed of 2.0m/s.
| iglidur HSD350 | dry | Greases | Oil | Water |
|---|---|---|---|---|
| Coefficient of friction μ | 0.07 - 0.23 | 0.09 | 0.04 | 0.04 |
Moisture absorption
The moisture absorption of iglidur HSD350 plain bearings in a normal climate is around 0.6% weight. The saturation limit in water is 1.2% weight. These values are so low that consideration of swelling due to moisture absorption is only necessary in extreme cases.
Shaft materials
Diagrams 05 and 06 show an extension of the results of tests with different shaft materials, which were carried out with plain bearings from iglidur HSD350. At 0.3m/s and 1MPa surface pressure, a wide variety of shafts are suitable and deliver good wear results. Hard anodised aluminium, free cutting steel, hard chrome plated Cf53, 304 SS and high grade steel show low bearing wear. If your intended shaft material is not included in the test results presented here, please contact us.
Chemical resistance
All data at room temperature [+20 °C], + resistant 0 conditionally resistant - non-resistant
| Medium | Resistance |
|---|---|
| Alcohols | + up to 0 |
| Greases, oils without additives | + |
| Hydrocarbons | + |
| Fuels | + up to 0 |
| Strong alkalines | 0 |
| Strong acids | 0 |
| Diluted alkalines | + |
| Diluted acids | + |
Installation tolerances
iglidur HSD350 plain bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed for press-fit into a housing machined to a H7 tolerance. After being assembled into a nominal size housing, in standard cases the inner diameter automatically adjusts to the F10 tolerances. For particular dimensions the tolerance differs depending on the wall thickness (please see product range table). In relation to the installation tolerance, the inner diameter changes with the absorption of humidity.
| Diameter d1 [mm] | Housing H7 [mm] | iglidur HSD350 plain bearing F10 [mm] | Shaft h9 [mm] |
|---|---|---|---|
| up to 3 | +0.000 +0.010 | +0.006 +0.046 | -0.025 +0.000 |
| > 3 up to 6 | +0.000 +0.012 | +0.010 +0.058 | -0.030 +0.000 |
| > 6 up to 10 | +0.000 +0.015 | +0.013 +0.071 | -0.036 +0.000 |
| > 10 up to 18 | +0.000 +0.018 | +0.016 +0.086 | -0.043 +0.000 |
| > 18 up to 30 | +0.000 +0.021 | +0.020 +0.104 | -0.052 +0.000 |
| > 30 up to 50 | +0.000 +0.025 | +0.025 +0.125 | -0.062 +0.000 |
| >50 to 80 | +0.000 +0.030 | +0.030 +0.150 | -0.074 +0.000 |
| >80 to 120 | +0.000 +0.035 | +0.036 +0.176 | -0.087 +0.000 |
| > 120 up to 180 | +0.000 +0.040 | +0.043 +0.203 | +0.000 +0.100 |
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