medias® professional – Product catalogue
www.ina.com |  www.fag.com |  Contact |  Legal notice |  Conditions of use |  Info
Language
Search
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 Rolling and plain bearings, accessories NK NK21/20
Series selection
Product selection
Product data
Description
Calculation
CAD
Shopping basket
Datasheet

Needle roller bearings NK21/20

light series

Needle roller bearings NK21/20, light series
Radial loadNot sealedGrease lubricationOil lubricationSmall design envelope
 
Fw 21  mm 
   
D 29  mm 
   
C 20  mm 
   
 
rmin 0,3  mm 
   
 
m 35,2  g 
  Mass
Cr 19300  N 
  Basic dynamic load rating, radial
C0r 25500  N 
  Basic static load rating, radial
Cur 4450  N 
  Fatigue limit load, radial
nG 20600  1/min 
  Limiting speed
nB 11100  1/min 
  Reference speed