iglidur® AB - Material data

Maximum surface speed

m/s

rotating

oscillating

linear

continuous

0,7

0,5

1,0

short-term

1,0

0,7

1,8

Table 03: Maximum surface speed

Permissible sliding speeds
iglidur® AB is predominantly suitable for low sliding speeds in dry operation, whereby the limit values specified in Table 03 can only be achieved at very low pressure loads. At the specified speeds, friction can lead to an increase up to the limit of the permanently permissible temperature. In practice, these limit values cannot always be achieved due to the interaction of various influences.

Temperatures
The temperatures prevailing in the bearing system also have an influence on bearing wear. Wear increases with rising temperatures, and the effect is particularly noticeable from a temperature of +60 °C. An additional fuse is required at temperatures above +50 °C.

iglidur® AB

dry

Grease

oil

water

coefficient of friction µ

0,11 - 0,21

0,09

0,04

0,04

Table 04: coefficient of friction against steel (Ra = 1 μm, 50 HRC)

friction and wear
The coefficient of friction and wear resistance depend on the application parameters (diagrams 04 and 05).

Medium

Resistance

Alcohols

+ to 0

Hydrocarbons

Greases, oils, not additivated

fuels

Diluted acids

0 to -

strong acids

-

Dilute bases

strong bases

0

+ resistant 0 conditionally resistant - not resistant
All data at room temperature [+20 °C]Table 05: chemical resistance of iglidur® W300

**
Electrical specification

Volume resistivity

> 1013 Ωcm

surface resistance

> 1012 Ω

Radioactive radiation
Bearings made of iglidur® AB are resistant to radiation up to a radiation intensity of 3 - 102 Gy.

Maximum moisture absorption

at +23 °C/50 % room humidity.

0.2 % by weight

max. total moisture absorption

0.4 % by weight

Table 06: Moisture absorption

Moisture absorption
The moisture absorption of iglidur® AB bearings is about 0.8% by weight in a normal climate. The saturation limit in water is 1.6% by weight.

Diameter****d1 [mm]

shaft h9**[mm]**

iglidur® AB****E10 [mm]

housing H7**[mm]**

to 3

0 - 0,025

+0,014 +0,054

0 +0,010

> 3 to 6

0 - 0,030

+0,020 +0,068

0 +0,012

> 6 to 10

0 - 0,036

+0,025 +0,083

0 +0,015

> 10 to 18

0 - 0,043

+0,032 +0,102

0 +0,018

> 18 to 30

0 - 0,052

+0,040 +0,124

0 +0,021

> 30 to 50

0 - 0,062

+0,050 +0,150

0 +0,025

> 50 to 80

0 - 0,074

+0,060 +0,180

0 +0,030

Table 07: Important tolerances according to ISO 3547-1 after press-fitting

Installation tolerances
iglidur® AB plain bearings are standard bearings for shafts with tolerance (recommended minimum h9). The bearings are designed to be pressed into an H7-toleranced mounting. after installation in a mounting with nominal dimensions, the inner diameter of the bearing with E10 tolerance adjusts itself. Compared to the installation tolerance, the inner diameter changes depending on the moisture absorption; for certain dimensions, the tolerance deviates from this depending on the wall thickness (see product range).