Our KOYO  Cylindrical roller bearing  NNU 4921K are original Japan, brand new and double row ones, which with a tapered bore, NNU.. K type. Double row cylindrical roller bearings with a tapered bore, the specified amount of clearance can be obtained by adjusting the press-in distance. And these bearings can accommodate high radial loads, and are often used on machine tool spindles

Product data of  KOYO Cylindrical roller bearing NNU 4921K:

   

d: 105mm
D: 145mm
B: 40mm
M: 1.91kg
Basic dynamic load rating,  Cr:    157KN  
Basic static load rating,     Cor:   306KN  
Limiting speed grease,     3900   
Limiting speed oil ,             4600

Some other our stock for KOYO Cylindrical roller bearings we can supply as below:

NJ1011

NUP209R

NNU4930K

NJ1012

NUP210R

NNU4932K

NJ1013

NUP211R

NNU4934K

NJ1014

NUP212R

NNU4936K

NJ1015

NUP213R

NNU4938K

NJ1016

NUP214R

NNU4940K

NJ1017

NUP215R

NNU4944K

NJ1018

NUP216R

NNU4948K

NJ1019

NUP217R

NNU4952K

NJ1020

NUP218R

NNU4956K

NJ1021

NUP219R

NNU4960K

NJ1022

NUP220R

NNU4964K

NJ1024

NUP222R

NNU4968K

NJ1026

NUP224R

NNU4972K

NJ1028

NUP226R

NNU4976K

NJ1030

NUP228R

NNU4980K

NJ1032

NUP230R

NNU4984K

NJ1034

NUP232R

NNU4988K

NJ1036

NUP234R

NNU4992K

NJ1038

NUP236R

NNU4996K

NJ1040

NUP238R

NN3040K/W33

NJ1044

NUP240R

NN3044K/W33

NJ1048

NUP303R

NN3048K/W33

NJ1052

NUP304R

NN3052K/W33

NJ1056

NUP305R

NN3056K/W33

NJ1060

NUP306R

NN3060K/W33

NJ1064

NUP307R

NN3064K/W33

NJ1068

NUP308R

NN3068K/W33

NJ1072

NUP309R

NN3072K/W33

NJ1076

NUP310R

NN3076K/W33

NJ1080

NUP311R

NN3080K/W33

NJ1084

NUP312R

NN3084K/W33

NJ1088

NUP313R

NN3088K/W33

NJ1092

NUP314R

NN3092K/W33

As a leading bearing supplier and agent in China, apart from cylindrical roller bearings, our Yakang Bearing Suppliers also stocks many kinds of original, brand-new  KOYO bearings  for sale: KOYO deep groove ball bearings, KOYO tapered roller bearings and KOYO  thrust ball bearings, etc. If you have problems about selecting proper bearings for your special applications, please contact us right now.