iglidur® W360 - Material data

Material table

General specification

Unit

iglidur® W360

Test method

density

g/cm³

1,34

Colour

yellow

max. Moisture absorption at 23°C/50% room humidity.

% by weight

0,2

DIN 53495

max. total moisture absorption

wt.-%

1,6

Sliding friction coefficient, dynamic, against steel

0,07 - 0,21

pv value, max. (dry)

MPa x m/s

0,35

Mechanical specification

flexural modulus

MPa

3.829

DIN 53457

flexural strength at 20°C

MPa

119

DIN 53452

Compressive strength

MPa

n.b.

maximum recommended surface pressure (20°C)

MPa

Shore D hardness

n.b.

DIN 53505

Physical and thermal specification

Upper long-term application temperature

°C

+180

Upper short-term application temperature

°C

+200

Lower application temperature

°C

-40

thermal conductivity

[W/m x K]

0,24

ASTM C 177

coefficient of thermal expansion (at 23°C)

[K-1 x 10-5]

DIN 53752

Electrical specification

Volume resistivity

Ωcm

> 1013

DIN IEC 93

surface resistance

> 1012

DIN 53482

Table 01: Material properties

Download data sheet

Moisture absorption

The moisture absorption of iglidur® W360 is low and can be neglected when used in humid environments. With a complete saturation of 1.6 %, however, use under water is only possible to a very limited extent.

Mechanical specification
The compressive strength of iglidur® W360 plain bearings decreases with increasing temperatures. diagram 02 illustrates this relationship. At +180 °C, the permissible surface pressure is still 10 MPa. The maximum recommended surface pressure represents a mechanical material parameter. Conclusions about the tribology cannot be drawn from this.

iglidur® W360 plain bearings are suitable for a wide range of loads. diagram. 03 shows the deformation under temperature. The behaviour of the materials under short-term stress is shown here.

Maximum surface speed

m/s

rotating

oscillating

linear

continuous

1,2

0,9

3,0

short-term

2,7

2,0

5,0

Table 03: Maximum surface speed

Permissible sliding speeds
iglidur® W360 bearings are well suited for low and medium speeds in both rotating and oscillating applications. Linear movements can also be well supported with iglidur® W360.

iglidur® W360

dry

Grease

oil

water

coefficient of friction µ

0,07 - 0,21

0,09

0,04

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

Friction and wear
The coefficients of friction of iglidur® W360 in dry operation against steel are in a very good range. They remain very constant at a low level over the speed. diagram. 04 illustrates this relationship. As the load increases, the coefficient of friction falls sharply, especially up to approx. 15 MPa (diagram. 05).

Shaft materials
In the case of iglidur® W360, the surface roughness of the shaft in the range up to 1.6 MPa has practically no influence on the coefficient of friction (diagram. 06). diagram. 07 shows an extract of the results of tests with different shaft materials. iglidur® W360 bearings are suitable for all sliding partners, with aluminium hc, Cf53 and stainless steel shafts standing out in rotation at 1 MPa load. If your intended shaft material is not included in the test results presented here, please contact us.

Shaft materials

Medium

Resistance

Alcohols

0 to -

hydrocarbons

Greases, oils, not additivated

fuels

Diluted acids

0 to -

strong acids

0 to -

Diluted bases

strong bases

+ resistant 0 conditionally resistant - not resistant

All data at room temperature [+20 °C]
Table 02: chemical resistance of iglidur® W360

Further specification
Radioactive radiation bearingsmade of iglidur® W360 are resistant to radiation up to a radiation intensity of 2 - 102 Gy.

UV resistanceiglidur® W360 plain bearings are conditionally resistant to UV radiation.

VacuumIna vacuum, iglidur® W360 plain bearings outgas to a small extent. Use in a vacuum is possible for dry bearings.

Diameter****d1 [mm]

shaft h9**[mm]**

iglidur® W360****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 05: Important tolerances according to ISO 3547-1 after press-fitting

Installation tolerances
iglidur® W360 bearings are standard bearings for shafts with h-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 is adjusted independently.