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.
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medias® Home Description B70..-E
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Accuracy
Spindle bearings
Accuracy
 
 

The main dimensions of the bearings conform to DIN 628-1. The dimensional tolerances of the bearings correspond to tolerance class P4, the running tolerances correspond to tolerance class P2 to DIN 620-2.

  
 

The actual value codes for the bore and outside diameter as well as the nominal value deviation for the bearing width are indicated on the end faces of the inner and outer rings as well as on the packaging, where they are stated in the sequence “bore/outside diameter/bearing width”.

  
   

Inner ring tolerance

  

Bore
 Bore deviation
 Width deviation
 Width variation
 Radial runout
 Axial runout
d
 mm
 Δdmp
 μm
 ΔBs
 μm
 VBs
 μm
 Kia
 μm
 Sd
 μm
 Sia
 μm
over
 incl.
- 10
 0
 –4
 0
 –100
 1,5
 1,5
 1,5
 1,5
10
 18
 0
 –4
 0
 –100
 1,5
 1,5
 1,5
 1,5
18
 30
 0
 –5
 0
 –120
 1,5
 2,5
 1,5
 2,5
30
 50
 0
 –6
 0
 –120
 1,5
 2,5
 1,5
 2,5
50
 80
 0
 –7
 0
 –150
 1,5
 2,5
 1,5
 2,5
80
 120
 0
 –8
 0
 –200
 2,5
 2,5
 2,5
 2,5
120
 150
 0
 –10
 0
 –250
 2,5
 2,5
 2,5
 2,5
150
 180
 0
 –10
 0
 –250
 4
 3
 4
 5
180
 250
 0
 –12
 0
 –300
 5
 4
 5
 5

 
   

Outer ring tolerance

  

Outside diameter
 Outside diameter deviation
 Width variation
 Radial runout
 Axial runout
D
 mm
 ΔDmp
 μm
 VCs
 μm
 Kea
 μm
 SD
 μm
 Sea
 μm
over
 incl.
18
 30
 0
 –5
 1,5
 2,5
 1,5
 2,5
30
 50
 0
 –6
 1,5
 2,5
 1,5
 2,5
50
 80
 0
 –7
 1,5
 3
 1,5
 4
80
 120
 0
 –8
 2,5
 4
 2,5
 5
120
 150
 0
 –9
 2,5
 4
 2,5
 5
150
 180
 0
 –10
 2,5
 5
 2,5
 5
180
 250
 0
 –11
 4
 7
 4
 7
250
 315
 0
 –13
 5
 7
 5
 7
315
 400
 0
 –15
 7
 8
 7
 8

 
 

The width deviation ΔCs is identical to ΔBs of the corresponding inner ring.

  
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