iglidur® AB material data - no longer available

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The most important specifications at a glance

The first antibacterial iglidur plain bearing - in accordance with ISO 22196:2011

iglidur AB was specifically developed for applications in areas with high hygiene requirements. Often such applications are manually operated pivots (doors, medical furniture, etc.). The material reduces the level of bacterial contamination but - like all "anti-bacterial" materials - is not a substitute for adequate hygienic measures.

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, dry: 0.18 - 0.31
Wear resistance under water	- 🟧 🟧 ⬜️ ⬜️ ⬜️ +
Media resistance	- 🟧 🟧 🟧 ⬜️ ⬜️ +	More information on media resistance
Resistant to edge pressures	- 🟧 🟧 🟧 ⬜️ ⬜️ +
Resistant to shock and impact loads	- 🟧 🟧 🟧 ⬜️ ⬜️ +
Dirt resistance	- 🟧 🟧 🟧 ⬜️ ⬜️ +

When do I use this material?

When bearing points must meet hygienic standards
When a universal plain bearing for manual applications is required
When a plain bearing for low to medium loads is required

When do I use a different material?

When a highly wear-resistant plain bearing is required for continuous dry operation iglidur J3
If you are looking for a plain bearing that complies with Regulation (EU) No. 10/2011 and/or the FDA requirements for repeated food contact iglidur A181, iglidur A351
When a plain bearing with the highest universal media resistance is required iglidur X

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Temperatures

The temperatures prevailing in the bearing system also have an influence on the wear. With increasing temperatures, the wear increases and this effect is significant when temperatures rise over +60°C. For temperatures over +50°C an additional securing is required.

Temperatures, coefficient of thermal expansion

Min. application temperature	Upper application temperature, long-term	Upper application temperature, short-term	In addition secure axially from
-40°C	+70°C	+140°C	+50°C

Permissible surface speeds

iglidur AB is primarily suitable for low surface speeds in dry operation, with the limit values specified in the table achievable only under very low pressure loads. At the given speeds, friction can cause a temperature increase to maximum permissible levels. In practice, though, this level is rarely reached due to varying application conditions.

Surface speeds of various iglidur materials

Maximum surface speeds [m/s]	Rotating	Oscillating	Linear
Long-term	0.7	0.5	1.0
Short-term	1.0	0.7	1.8

Permissible pv values

Graph with a falling characteristic curve on logarithmic X- and Y-axes.

pv value, max. (dry)

MPa · m/s

0.25

Information on the pv value and lubrication

Mechanical properties

With increasing temperatures, the compressive strength of iglidur AB plain bearings decreases. The maximum recommended surface pressure is a mechanical material parameter. No conclusions regarding the tribological properties can be drawn from this. Diagram 03 shows the elastic deformation of iglidur AB at radial loads. A possible deformation could be, among others, dependant on the duty cycle of the load.

Graph with a line falling from left to right over the X- and Y-axes.

Graph with two ascending lines for +23°C and +60°C with the one for +60°C rising more steeply.

Friction and wear

Coefficient of friction and wear resistance are dependent on the application parameters (diagrams 04 and 05).

Coefficient of friction against steel (Ra = 1µm, 50HRC):

iglidur AB	dry	Greases	Oil	Water
Coefficient of friction μ	0.18-0.31	0.09	0.04	0.04

Graph showing the coefficient of friction above speed: at first almost constant, then rising sharply from about 0.7.

Graph with a decreasing curve: the coefficient of friction drops from about 0.21 to 0.10 as the X-axis increases.

Shaft materials

The friction and wear are also dependent, to a large degree, on the mating partner. Shafts that are too smooth increase both the coefficient of friction and the wear of the bearing. Diagram 06 shows results of testing different shafts. When rotating at a load of 1MPa, the wear on all tested shafts is very similar. Only the hard-anodised aluminium shafts cause a noticeable increase in the wear. The wear rate from pivoting and rotational movements at loads in increasing levels is also quite similar if the remaining parameters are identical, as diagram 07 shows.

Further information on shaft materials

Bar chart with categories A to G and Y-axis from 0.0 to 0.4; A has the highest value.

Graph with two lines A and B shows a sharp increase in wear at X = 20 to 25.

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	+
Strong alkalines	0
Strong acids	-
Diluted alkalines	+
Diluted acids	0 to -

Moisture absorption

Maximum moisture absorption

at +23°C/50% r. humidity

0.8% weight

Max. moisture absorption

1.6% weight

Installation tolerances

iglidur AB plain bearings are standard bearings for shafts with h tolerance (h9 recommended as a minimum). The bearings are designed for press-fit into a housing machined to a H7 tolerance. After being assembled into a nominal size housing, the inner diameter of the bearing automatically adjusts to the E10 tolerances. In relation to the installation tolerance, the inner diameter changes with the absorption of humidity. For particular dimensions the tolerance differs depending on the wall thickness (please see product range table).

Important tolerances according to ISO 3547-1 after press-fit:

Diameter d1 [mm]	Housing H7 [mm]	iglidur AB plain bearing E10 [mm]	Shaft h9 [mm]
0 to 3	+0.000 +0.010	+0.014 +0.054	-0.025 +0.000
> 3 up to 6	+0.000 +0.012	+0.020 +0.068	-0.030 +0.000
> 6 up to 10	+0.000 +0.015	+0.025 +0.083	-0.036 +0.000
> 10 up to 18	+0.000 +0.018	+0.032 +0.102	-0.043 +0.000
> 18 up to 30	+0.000 +0.021	+0.040 +0.124	-0.052 +0.000
> 30 up to 50	+0.000 +0.025	+0.050 +0.150	-0.062 +0.000
>50 to 80	+0.000 +0.030	+0.060 +0.180	-0.074 +0.000
>80 to 120	+0.000 +0.035	+0.072 +0.212	-0.087 +0.000
> 120 up to 180	+0.000 +0.040	+0.085 +0.245	-0.100 +0.000