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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.
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The wizard will assist you in the selection of the correct bearing for your design.
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The wizard will assist you in the selection of the correct linear guidance system for your design.
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Lubricant selection
Lubrication is a design element. You can find the right grease or oil here.
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Here you can find fundamental knowledge on the calculation, lubrication and fitting of bearings.
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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.
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This function determines appropriate INA and FAG bearings based on designations from other manufacturers.
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medias® Home Rolling and plain bearings, accessories K K25X31X21
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Needle roller and cage assemblies K25X31X21

to DIN 5405-1/ISO 3030

Needle roller and cage assemblies K25X31X21, to DIN 5405-1/ISO 3030
Radial loadNot sealedGrease lubricationOil lubricationSmall design envelope
 
Fw 25  mm 
   
Ew 31  mm 
   
Bc 21  mm 
   
 
 
m 20  g 
  Mass
Cr 24700  N 
  Basic dynamic load rating, radial
C0r 38000  N 
  Basic static load rating, radial
Cur 5100  N 
  Fatigue limit load, radial
nG 17500  1/min 
  Limiting speed
nB 9400  1/min 
  Reference speed