medias® professional – Product catalogue
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Rolling and plain bearings, accessories
Transparent classification of our bearings for rotary motion.
Linear guidance systems
Transparent classification of our linear bearings.
Selection wizards
Bearing selection
The wizard will assist you in the selection of the correct bearing for your design.
Linear selection
The wizard will assist you in the selection of the correct linear guidance system for your design.
Housing selection
The wizard will assist you in the selection of the correct housing for your design
Application examples
Suggestions for your daily work.
Lubricant selection
Lubrication is a design element. You can find the right grease or oil here.
Principles
Here you can find fundamental knowledge on the calculation, lubrication and fitting of bearings.
Lexicon
Here you can find explanations of terms in bearing technology
Interchange list - designations
From this list, you can use the old designation to find the new uniform designation of INA and FAG.
medias® campus
Our online training courses gives you the necessary rolling bearing knowledge in the form of short learning units.
medias® interchange
This function determines appropriate INA and FAG bearings based on designations from other manufacturers.
Help
Is something unclear? Our help system can assist you.
medias® gadget
Integrate the medias product search in your webpage.
medias® Home Description KUG
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Datasheet
Features
Accuracy
Steel balls
Accuracy
 
 

The dimensional and geometrical tolerances conform to DIN 5 401/ISO 3 290.

  
   

Grades and tolerances

  

Grade
 Diameter
 Ball tolerance in batch
Dimensional and geometrical tolerance
 Roughness
Dw
mm
 VDws; tDws
μm
 Ra
μm
DIN
incl.
 max.
 max.
G5
 12,7
 0,13
 0,014
G10
 25,4
 0,25
 0,02
G16
 38,1
 0,35
 0,025
G20
 50,8
 0,5
 0,032
G28
 50,8
 0,7
 0,05
G40
 100
 1
 0,06

 
   

Grades, tolerances, sort limits

  

Grade
 Tolerance
 Sort limit
of one batch
 Sort interval
VDwL
μm
 IG
μm
 μm
max.
 lower
 upper
G5
 0,25
 1
 –5
 +5
G10
 0,5
 1
 –9
 +9
G16
 0,8
 1
 –10
 +10
G20
 1
 2
 –10
 +10
G28
 1,4
 2
 –12
 +12
G40
 2
 4
 –16
 +16

 
 
DDDDw
 mm
Nominal ball diameter
VVVVDws
 μm
Variation of ball diameter;
difference between the largest and smallest individual diameter Dws
of one ball
ttttDws
 μm
Deviation from spherical form
RRRRa
 μm
Mean roughness value to DIN 4 768
VVVVDwL
 μm
Variation of ball diameters in one batch;
difference between the largest and smallest mean diameter Dwm
in one batch (G3)
llllG
 μm
Sort interval;
the amount into which the permissible deviation of the balls is uniformly divided.
 
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