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 IR
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Accuracy
Inner rings
Accuracy
 
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Normal tolerances

  

The dimensional and geometrical tolerances of inner rings IR correspond to tolerance class PN to DIN 620.

  
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Radial internal clearance

  

When combined with INA needle roller bearings, inner rings have an internal clearance CN to DIN 620-4.

  
 

When combined with INA drawn cup needle roller bearings with open ends or closed end, inner rings have an internal clearance C2 to C3 to DIN 620-4, depending on the raceway diameter.

  
   

Radial internal clearance

  

Bore
 Radial internal clearance
d
mm
 C2
μm
 CN
μm
 C3
μm
 C4
μm
over
 incl.
 min.
 max.
 min.
 max.
 min.
 max.
 min.
 max.
- 24
 0
 25
 20
 45
 35
 60
 50
 75
24
 30
 0
 25
 20
 45
 35
 60
 50
 75
30
 40
 5
 30
 25
 50
 45
 70
 60
 85
40
 50
 5
 35
 30
 60
 50
 80
 70
 100
50
 65
 10
 40
 40
 70
 60
 90
 80
 110
65
 80
 10
 45
 40
 75
 65
 100
 90
 125
80
 100
 15
 50
 50
 85
 75
 110
 105
 140
100
 120
 15
 55
 50
 90
 85
 125
 125
 165
120
 140
 15
 60
 60
 105
 100
 145
 145
 190
140
 160
 20
 70
 70
 120
 115
 165
 165
 215
160
 180
 25
 75
 75
 125
 120
 170
 170
 220
180
 200
 35
 90
 90
 145
 140
 195
 195
 250
200
 225
 45
 105
 105
 165
 160
 220
 220
 280
225
 250
 45
 110
 110
 175
 170
 235
 235
 300
250
 280
 55
 125
 125
 195
 190
 260
 260
 330
280
 315
 55
 130
 130
 205
 200
 275
 275
 350
315
 355
 65
 145
 145
 225
 225
 305
 305
 385
355
 400
 100
 190
 190
 280
 280
 370
 370
 460
400
 450
 110
 210
 210
 310
 310
 410
 410
 510

 
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