Page 873 - IGUS Bearing

igubal bearing elements | Technical data igubal bearing elements | Technical data
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Loads Check the inner diameter
The load capacity of the maintenance-free igubal bearing igubal ® Application temperature Medium Resistance
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element parts is very high at normal ambient temperatures. Standard HT version FC version Standard HT version
igubal bearings absorb high forces and weigh only one Minimum -30°C -40°C -30°C Alcohols + to 0 +
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fifth of traditional, metal bearing housings. The excellent Max. long-term +80°C +200°C +90°C Hydrocarbons + +
dampening properties are based on the fact that the Maximum, short-term +120°C +240°C +110°C Greases, oils without additives + +
polymer material of the two part bearing can absorb Table 01: Temperature limits of igubal bearing elements Fuels + +
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vibrations differently than steel. Diluted acids 0 to – + to 0 Inadequate test equipment; Wrong test equipment;
However, plastic specific properties, such as dependence Thread type Pitch [mm] Strong acids – + to – plug gauge too short caliper
on temperature and behaviour under long-term stress, must M2 0.40 Diluted alkalines + +
be taken into consideration when using igubal bearings. M3 0.50 Strong alkalines 0 +
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The load capacity of the rod end should therefore be M4 0.70 Table 03: Chemical resistance of igubal bearing
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checked in a practical test, particularly if it will be used M5 0.80 elements
under continuous high loads and at elevated temperatures. M6 1.00 + resistant 0 conditionally resistant – not resistant
M8 1.25 All data given at room temperature [+20°C]
100 M10 1.50 Radiation resistance Tolerance test with plug
Percentage tensile strength [%] 70 M12 1.75 Self-aligning igubal bearings are resistant to radiation up Service life calculation ®
90
M10 F
1.25
gauge
80
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M12 F
1.25
to an intensity of 3 · 10 Gy.
2
60
M14
2.00
The igubal expert allows to check the suitability of igubal
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50
M16
2.00
UV resistance
bearings for every application. You can choose from different
40
M16 F
1.50
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30
special value for outside applications.
and dynamic).
20
M20
1.50
20 40 60 80 100 120 140 160 180 200 M18 1.50 The corrosion resistance of igubal bearings gives them igubal bearings and specific load (radial, axial or static, cyclic
The expert system will calculate from these input data:
igubal bearings are permanently resistant to UV radiation.
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Temperature [ºC] M20 M20 2.50
Standard temperatures materials M22 1.50 A small change in colour (dark colouration) of the spherical ● The bearing wear
High temperatures material M24 2.00 ball due to UV radiation does not affect the mechanical, ● The theoretical service life
Diagram 01: Trends indicate the effect of temperature M27 2.00 electrical or thermal properties.
on the max. tensile strength of igubal rod end bearings. M30 2.00
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Tolerances
Table 02: Thread pitches of igubal rod ends and clevis igubal bearing elements can be used with different
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Coefficient of sliding friction and speed
One important advantage of igubal spherical bearings joints tolerances according to each application. They are
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is that rapid, shaft rotation takes place directly within the Chemical resistance of igubal bearing designed with a large bearing clearance in the standard
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spherical portion, made of iglidur W300. The advantage elements product range, which enables a secure operation even
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therefore lies in the plastic vs. steel relationship. Polymer ® under high peripheral speeds. The inner ring inner diameter
produces lower friction and permits high speeds, even in dry The spherical balls made from iglidur W300 and the has a tolerance of E10. The shaft tolerance should be
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operation. Taking the radial loads into account, maximum housing made from igumid G are resistant to weak alkalis, manufactured between h6 and h9. The tolerances are
surface speeds up to 0.5m/s rotating can be attained. weak acids and fuels, as well as all types of lubricants. The provided in the table below. Please contact us in case you
By contrast, rotations of the shaft are supported directly in HT versions can be used for applications with a higher require lower or other bearing tolerances.
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the inner diameter of the spherical portion. The maintenance- chemical demand. The moisture absorption of igubal Nominal size Tolerance
free igubal bearing elements also permit linear movements spherical bearings is about 1.3% by weight in normal [mm] Plug gauge falls Plug gauge sticks
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of the shaft. climate. The saturation limit submerged in water is 6.5%. to 3 x.01 x.05
This must be taken into evaluation for applications. If a lower
moisture absorption is essential, a look on to the different > 3 to 6 x.02 x.07
Application temperatures > 6 to 10 x.02 x.08 ®
igubal standard bearing elements can be used in materials is helpful. > 10 to 18 x.03 x.10 igubal expert system
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temperatures from -30°C to +80°C. The high temperatures u Chemical table, page 1170 > 18 to 30 x.04 x.12 www.igus-asean.com/igubal-expert
versions can be used at continuous temperatures up > 30 to 50 x.05 x.15 ®
to +200°C. Diagram 01 trends indicate the effect of igubal product finder
temperature on the maximum tensile strength of igubal Table 04: Tolerances of inner diameter (spherical balls) u www.igus-asean.com/igubal-finder
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rod end bearings. ASEAN 09/2023 ASEAN 09/2023
870 Online tools and more information u www.igus-asean.com/igubal 3D CAD files, prices and delivery time online u www.igus-asean.com/igubal 871