iglidur® J200 - Material data

Material data table

General properties	Unit	iglidur® J200	Testing method
Density	g/cm³	1.72
Colour		dark grey
Max. moisture absorption at +23°C/50% room humidity	% weight	0.2	DIN 53495
Max. moisture absorption	% weight	0.7
Coefficient of sliding friction, dynamic against steel	μ	0,11-0,17
pv value, max. (dry)	MPa x m/s	0.30
Mechanical properties
Flexural modulus	MPa	2800	DIN 53457
Flexural strength at 20°C	MPa	58	DIN 53452
Compressive strength	MPa	43
Maximum recommended surface pressure (20°C)	MPa	23
Shore D hardness		70	DIN 53505
Physical and thermal properties
Max. long-term application temperature	°C	+90
Max. short-term application temperature	°C	+120
Max. short-term ambient temperature¹⁾	°C	+140
min. application temperature	°C	-50
Thermal conductivity	W/m x K	0.24	ASTM C 177
Coefficient of thermal expansion (at 23°C)	K^-1 x 10^-5	8	DIN 53752
Electrical properties
Specific transitional resistance	Ωcm	> 10⁸	DIN IEC 93
Surface resistance	Ω	> 10⁸	DIN 53482

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diagram. 01: Permissible pv value for iglidur® J200 plain bearings with 1 mm wall thickness in dry operation against a steel shaft, at +20 °C, installed in a steel housing

iglidur® J200 is the result of the development of particularly low-friction plain bearings. Friction plays a crucial role, particularly in linear technology applications. While many materials have excellent coefficients of friction under high loads, iglidur® J200 is characterised by the fact that the coefficient of friction is very good even at low loads.

diagram. 02: maximum recommended surface pressure as a function of temperature (23 MPa at +20 °C)

Mechanical specification

The maximum recommended surface pressure is a mechanical material parameter.
It cannot be used to draw conclusions about tribology. The compressive strength of iglidur® J200 plain bearings decreases with increasing temperatures.

Diagram 02 illustrates this relationship.

Under the maximum permissible load of 23 MPa, the deformation is 3.5 % (diagram. 03). Plastic deformation can be neglected up to this value. However, it also depends on the duration of the impact.

Diagram 03: Deformation under pressure and temperature

Further information

load, surface pressure

Permissible sliding speeds

iglidur® J200 allows high sliding speeds due to the very good coefficient of friction. Continuous rotational speeds of 1 m/s are possible. The permissible speeds are even significantly higher for linear movements or in short-term operation. Linear speeds of over 15 m/s have already been successfully tested.

Maximum surface speed

m/s	Rotating	Oscillating	linear
permanent	1	0.7	10
Short-term	1.5	1.1	15

Surface Speedp x v value and lubrication

Temperatures

The maximum permissible temperature of +120 °C must not be exceeded. The heating caused by friction must be added to this. The bearings should be additionally secured mechanically from +60 °C so that there is no risk of the bearings moving out of the hole. The wear resistance also decreases disproportionately from +70 °C.

iglidur® J200	Application temperature
Minimum	- 50 °C
Max. long-term	+90°C
Maximum, short-term	+120°C
In addition secure axially from	+60°C

Temperatures, coefficient of thermal expansion

Diagram 04: Coefficient of friction as a function of the surface speed, p = 0.75MPa

Friction and wear

Of all iglidur®materials, iglidur® J200 has the lowest coefficient of friction. On average, the coefficient of friction of all measurements, even with different shaft materials, is 0.11 μ. Hard-anodised aluminium is particularly important as a mating partner.

The comparison with the other iglidur®materials clearly shows that iglidur® J200 bearings are more suitable for low loads. The influence of surface speed and load on the coefficient of friction is not very pronounced. The decrease in the coefficient of friction with the load is within the normal range (diagrams 04 and 05). With regard to shaft roughness, the optimum lies in the range of 0.2 to 0.4 Ra. In contrast, the influence of the shaft on the wear resistance is very large. Even at low loads, it is worth taking a look at the extensive wear database.

coefficient of friction for iglidur® J200 against steel (Ra = 1 μm, 50 HRC):

iglidur® J200	dry	Greases	Oil	Water
Coefficients of friction µ	0,11 - 0,17	0.09	0.04	0.04

Diagram 05: Coefficient of friction as a function of the pressure, v = 0.01m/s

Further information:

Coefficient of frictionWear resistance

diagram. 06: Wear, rotating application with

Shaft materials

The shaft material used has a major influence on the wear resistance. Although all shaft materials (soft or hardened) are suitable for use with iglidur® J200, the best results are achieved with hard-anodised aluminium. This mating partner has proven itself particularly in linear movements.

Shaft materials

diagram. 07: Wear with oscillating and rotating

Chemical resistance

iglidur® J200 plain bearings are resistant to diluted alkalis, solvents and most lubricants.

+ resistant 0 conditionally resistant - not resistant
All data at room temperature [+20 °C]

Medium	Resistance
Alcohols	+
Hydrocarbons	+
Greases, oils without additives	+
Fuels	+
Diluted acids	0 to -
Strong acids	-
Diluted alkalines	+
Strong alkalines	+ up to 0

Chemical resistance

iglidur® J200 plain bearings are resistant to diluted alkalis, solvents and most lubricants.

Radioactive radiation

Plain bearings made from iglidur® J200 are resistant to radiation up to a radiation intensity of 3 x 10² Gy.

UV resistance

iglidur® J200 plain bearings are highly resistant to the influence of UV radiation.

Vacuum

Use in a vacuum is possible to a limited extent. However, only dry bearings made from iglidur® J200 should be tested in a vacuum.

product range

Bearings made from iglidur® J200 are manufactured to order.

Electrical properties

Bearings made of iglidur® J200 are electrically insulating.

Electrical properties
Specific transitional resistance	> 10⁸ Ωcm
Surface resistance	> 10⁸ Ω

Moisture absorption

The moisture absorption of iglidur® J200 bearings is about 0.2 % in a normal climate. The saturation limit in water is 0.7 %. These values are so low that a consideration of the swelling due to moisture absorption is only necessary in extreme cases.

Maximum moisture absorption
at +23 °C/50 % r. humidity	0.2% weight
Max. moisture absorption	0.7% weight

Installation tolerances

iglidur® J200 plain 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 dimension H7, the inner diameter of the bearing with E10 tolerance adjusts itself automatically. For certain dimensions, the tolerance deviates from this depending on the wall thickness (see product range).

Diameter d1 [mm]	Shaft h9 [mm]	iglidur® J200 E10 [mm]	Housing H7 [mm]
up to 3	0 - 0.025	+0.014 +0.054	0 +0.010
> 3 up to 6	0 - 0.030	+0.020 +0.068	0 +0.012
> 6 up to 10	0 - 0.036	+0.025 +0.083	0 +0.015
> 10 up to 18	0 - 0.043	+0.032 +0.102	0 +0.018
> 18 up to 30	0 - 0.052	+0.040 +0.124	0 +0.021
> 30 up 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
>80 to 120	0 - 0.087	+0.072 +0.212	0 +0.035
> 120 up to 180	0 - 0.100	+0.085 +0.245	0 +0.040