iglidur® T220 - Material data

Materials table

Genera l features	Unit	iglidur® T220	test method
Density	g/cm³	1,28
Colour		white
Max. humidity absorption at 23°C/50% R. H.	% weight	0,3	DIN 53495
Max. water absorption	% weight	0,5
Coefficient of surface friction, dynamic, against steel	μ	0,20-0,32
pv value, max. (dry)	MPa x m/s	0,28
Mechanical properties
Bending E-module	MPa	1.800	DIN 53457
Tensile strength at +20 °C	MPa	65	DIN 53452
compressive strength	MPa	55
Maximum recommended surface pressure (20° C)	MPa	40
Shore D-hardness		76	DIN 53505
Physical and thermal properties
Max. long term application temperature	°C	+100
Max. short term application temperature	°C	+160
Minimum application temperature	°C	-40
thermal / heat conductivity	W/m x K	0,24	ASTM C 177
Coefficient of thermal expansion (at 23° C)	K^–1 x 10^–5	11	DIN 53753
Electrical properties
Specific forward resistance	Ωcm	> 10¹⁰	DIN IEC 93
surface resistance	Ω	> 10¹⁰	DIN 53482
¹⁾ Without additional load; no gliding movement; relaxation not excluded.

'Table 01: Material Data

Figure 01: Permitted PV values for iglidur® T220 bearings with 1 mm wall thickness in dry operation against a steel shaft, at 20°C, installed in a steel housing.

X = Surface speed [m/s]
Y = Load [MPa]

iglidur® T220 is a special material for application in the tobacco processing industry. It fulfills the demands of the tobacco industry (engineering database). The material is free of undesirable or banned ingredients, as requested by reputed manufacturers from 2004 onward.

Figure 02: Maximum recommended surface pressure dependent on the temperature (40 MPa to +20 °C)

X = Temperature [°C]
Y = Load [MPa]

Figure 03: Deformation under load and temperatures

X = Load [MPa]
Y = Deformation [m/s]

Mechanical properties

Maximum recommended surface pressure represents a mechanical material parameter. Tribological conclusions cannot be drawn from it. The pressure resistance of iglidur® T220 bearings declines with increasing temperatures. Fig. 02 clarifies this connection.

iglidur® T220 bearings can be stressed up to the permitted limit of 45 MPa. The deformation is then virtually at 2%. The permitted load is limited by higher temperatures. (Fig. 02).

Maximum surface speed

m/s	Rotary	oscillating	Linear
Constant	0,4	0,3	1
Short-term	1	0,7	2

Table 02: Maximum surface speeds

Permitted surface speeds

The maximum surface speeds of iglidur® T220 bearings amount to 0.4 m/s with continuous rotation. The friction and the entailing heating limit the permitted speeds. From this it follows that higher speeds can be attained in intermittent service or in linear movements.

Surface speed

p x v value and lubrication

iglidur® T220	Operating temperature
Lower	- 40 °C
Upper, long-term	+ 100 °C
Upper, short-term	+ 160 °C
Secure axially in addition	+ 50 °C

Table 03: Temperature limits for iglidur® T220

Temperatures

The elasticity of the bearing is dependent on the temperature. Even 60°C leads to a significant increase in elasticity. A mechanical fastening should be considered from +50°C upward.

Temperatures, coefficient of thermal expansion

Figure 04: Coefficients of friction dependent on the surface speed, p = 0,75 MPa

X = Surface speed [m/s]
Y = Coefficient of friction μ

Figure 05: Coefficients of friction dependent on the load, v = 0,01 m/s

X = Load [MPa]
Y = Coefficient of friction μ

Friction and wear

By complying with the requirements established by the tobacco processing industry, the coefficients of friction and wear of the iglidur® T220 bearings are clearly behind those of the best iglidur® bearings. The coefficient of friction decreases with the load while it increases only slightly at higher speeds.

iglidur® T220	Dry	Grease	Oil	Water
Coefficients of friction µ	0,2 - 0,32	0,09	0,04	0,04

Table 04: Coefficients of friction for iglidur® T220 against steel (Ra = 1 µm, 50 HRC)

Coefficients of friction

Wear resistance

Fig. 06: Wear, rotating application with various shaft materials p = 1 MPa, v = 0.3m/s

X = shaft materials
Y = wear [μm/km]

A = Aluminum, hard-anodized
B = machining steel
C = Cf53
D = Cf53, hard chrome-plated
E = St37
F = V2A
G = X90

Shaft materials

Fig. 06 shows the test results with different shaft materials conducted with bearings made of iglidur® T220.
Figure 07 shows that with increase in load, the bearing responds with stronger increase in wear. Therefore care should be taken to maintain the loads under 5 MPa through adequate dimensioning of the bearing.

Shaft materials

Fig. 07: Wear with oscillating and rotating applications with Cf53 as a function of the load

X = Load [MPa]
Y = Wear [μm/km]

A = rotating
B = oscillating

Medium	Resistance
Alcohols	+
Hydrocarbons	-
Fats, oils, without additives	+
Fuels	+
Diluted acids	0
Strong acids	-
Diluted bases	-
Strong bases	-

+ resistant 0 partially resistant - non-resistant
All specifications at room temperature [+20°C] Table 05: Chemical resistance of iglidur® T220

Electrical properties

Specific forward resistance	> 10¹⁰ Ωcm
Surface resistance	> 10¹⁰ Ω

Chemical resistance

iglidur® T220 bearings are resistant to highly diluted alkalis and very weak acids.

Radioactive rays

iglidur® T220 bearings are radiation resistant up to a radioactive intensity of 3 x 10² Gy.

UV-resistant

iglidur® T220 bearings are not resistant to the influence of UV rays.

Vacuum

The use in vacuum is possible only conditionally. Only dry bearings made of iglidur® T220 should be tested in vacuum.

Electrical properties

Bearings made of iglidur® T220 are electrically insulating.

Delivery program

The iglidur® T220 bearings are manufactured according to order specifications.

Maximum moisture absorption
by +23 °C/50 % r. F.	0,3 weight-%
Max. water absorption	0,5 weight-%

Table 06: Moisture absorption of iglidur® T220

Diagram 10: Effect of moisture absorption

X = Moisture absorption [weight %]
Y = Reduction of inside diameter [%]

Moisture absorption

The humidity absorption of iglidur® 200 bearings amounts to about 0,3% in standard climatic conditions. The saturation limit in water is 0,5 %. These values are so low that a moisture expansion need to be considered only in extreme cases.

Diameter d1 [mm]	Shaft h9 [mm]	iglidur® T220 E10 [mm]	Housing H7 [mm]
Up 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
> 80 to 120	0 - 0,087	+0,072 +0,212	0 +0,035
> 120 to 180	0 - 0,100	+0,085 +0,245	0 +0,040

Table 07: Important tolerances for iglidur® T220 bearings according to ISO 3547-1 after the press-in.

Installation tolerances

iglidur® T220- bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed for press-fit in a housing with h7 tolerance.

After the installation in a housing bore with H7 tolerance, the inner diameter of the bearing automatically adjusts to the E10 tolerance.

คุกกี้มีความสำคัญเพราะจะช่วยให้เว็บไซต์ปฏิบัติงานได้ถูกต้องเหมาะสมเพื่อให้เราสามารถเสนอประสบการณ์การใช้งานที่น่ารื่นรมย์ยิ่งขึ้น เราจึงต้องใช้คุกกี้เพื่อเก็บข้อมูลของท่าน ซึ่งจะช่วยให้เราสามารถเสนอการล็อกอินเข้าสู่ระบบที่ปลอดภัย สามารถรวบรวมข้อมูลทางสถิติเพื่อการใช้งานเว็บไซต์ที่ดียิ่งขึ้น รวมทั้งสามารถเสนอเนื้อหาที่ตรงกับความต้องการของท่านได้ กรุณาคลิกที่ "นโยบายการคุ้มครองข้อมูลส่วนบุคคล“เพื่อดูรายละเอียดเกี่ยวกับประเภทของคุกกี้ที่เราใช้และดูข้อมูลตัวเลือกต่างๆในกรณีที่ท่านต้องการถอนสิทธิ์.

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iglidur® T220 - Material data

Materials table

Mechanical properties

Maximum surface speed

Permitted surface speeds

Temperatures

Friction and wear

Shaft materials

Electrical properties

Chemical resistance

Radioactive rays

UV-resistant

Vacuum

Electrical properties

Delivery program

Moisture absorption

Installation tolerances

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โปรดเลือกที่อยู่การจัดส่ง

iglidur® T220 - Material data

Materials table

Mechanical properties

Maximum surface speed

Permitted surface speeds

Temperatures

Friction and wear

Shaft materials

Electrical properties

Chemical resistance

Radioactive rays

UV-resistant

Vacuum

Electrical properties

Delivery program

Moisture absorption

Installation tolerances

ที่ปรึกษาและการสนับสนุน

เรายินดีให้คำปรึกษากับคุณ

จัดส่งและให้คำปรึกษา

ประเทศ/ภูมิภาค

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