iglidur® B material data - no longer available

Maximum surface speed

m/s

Rotating

Oscillating

Linear

permanent

0.7

0.5

2

Short-term

1

0.7

3

Table 02: Maximum surface speeds

Permissible surface speeds
iglidur® B plain bearings can be continuously used at up to 0.7m/s in rotating applications. The frictional heat determines the speed limits.

Due to reciprocal effects, the specified maximum values often cannot be achieved in practice.

iglidur® B

Application temperature

Minimum

-40°C

Maximum, long-term

+100°C

Maximum, short-term

+130°C

In addition secure axially from

+50°C

Table 03: Temperature limits for iglidur® B

Temperatures
The operating temperature of iglidur® B plain bearings is limited to +100°C. From as low as +50°C, these very soft bearings should also be mechanically secured so that the bushings do not move out of the hole. The wear resistance also decreases disproportionately from +70°C.

Medium

Resistance

Alcohols

+ up to 0

Hydrocarbons

-

Greases, oils without additives

-

Fuels

-

Diluted acids

0 to -

Strong acids

-

Diluted alkalines

-

Strong alkalines

-

+ resistant      0 partially resistant      - non-resistant
All information applies to room temperature [+20 °C]
Table 05: Chemical resistance of iglidur® B

Chemical resistance
iglidur® B plain bearings are not very chemical-resistant. If chemical resistance is important, other iglidur® materials with better specifications are available.

**
Electrical specifications**

Specific transitional resistance

>1,010Ωcm

Surface resistance

>109Ω

Radioactive radiation
Plain bearings made of iglidur® B are resistant to a radiation intensity of up to 3 x 102Gy.

Maximum moisture absorption

at +23°C/50% r. humidity

1.0% weight

Max. moisture absorption

6.3% weight

Table 06: Moisture absorption of iglidur® B

Moisture absorption
The moisture absorption is relatively high and must be taken into account during selection and design.

Diameter
d1[mm]

Shaft h9
[mm]

iglidur® B
D11[mm]

Housing H7
[mm]

up to 3

0 - 0.025

+0.020 +0.080

0 +0.010

> 3 up to 6

0 - 0.030

+0.030 +0.105

0 +0.012

> 6 up to 10

0 - 0.036

+0.040 +0.130

0 +0.015

> 10 up to 18

0 - 0.043

+0.050 +0.160

0 +0.018

> 18 up to 30

0 - 0.052

+0.065 +0.195

0 +0.021

> 30 up to 50

0 - 0.062

+0.080 +0.240

0 +0.025

>50 to 80

0 - 0.074

+0.100 +0.290

0 +0.030

Table 07: Important tolerances for iglidur® B plain bearings according to ISO 3547-1 after press-fit

Assembly tolerances
iglidur® B plain bearings are the standard 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, the inner diameter automatically adjusts to the D11 tolerances. For particular dimensions the tolerance differs depending on the wall thickness (please see product range table).