If You Click The Bearing Number In The Below, You Will Check The Drawing Applied Numerical Values Correspondent To Each Bearing Number.
Bearing No. NART 5R (UUR/VR/VUUR) NART 6R (UUR/VR/VUUR) NART 8R (UUR/VR/VUUR) NART 10R (UUR/VR/VUUR) NART 12R (UUR/VR/VUUR)
NART 15R (UUR/VR/VUUR) NART 17R (UUR/VR/VUUR) NART 20R (UUR/VR/VUUR) NART 25R (UUR/VR/VUUR) NART 30R (UUR/VR/VUUR)
NART 35R (UUR/VR/VUUR) NART 40R (UUR/VR/VUUR) NART 45R (UUR/VR/VUUR) NART 50R (UUR/VR/VUUR)

Bore diameter
mm
d

Bearing No.

Dimensions mm

Weight
gr.

Basic
dynamic
load
ratings
C/kgf

Basic
static
load
ratings
Co/Kgf

Track
capacity
kgf

Limiting
speed
rpm
Caged needle rollers Full complement of
needle rollers

D

B

 B1 a r
Unsealed Sealed Unsealed Sealed
5 NART 5R NART 5UUR NART 5VR NART 5VUUR 16 11 12 12 0.5 14.5 / 15.1 270 / 530 170 / 510 90 25,000 / 8,500
6 NART 6R NART 6UUR NART 6VR NART 6VUUR 19 11 12 14 0.5 20.5 /21.5 300 / 600 210 / 620 120 20,000 / 7,000
8 NART 8R NART 8UUR NART 8VR NART 8VUUR 24 14 15 19 0.5 41.5 / 42.5 500 / 910 350 / 930 160 17,000 / 5,500
10 NART 10R NART 10UUR NART 10VR NART 10VUUR 30 14 15 23.5 0.5 64.5 / 66.5 700 / 1,220 460 / 1,090 210 15,000 / 5,000
12 NART 12R NART 12UUR NART 12VR NART 12VUUR 32 14 15 25.5 0.5 71 / 73 750 / 1,320 500 /1,210 240 13,000 / 4,500
15 NART 15R NART 15UUR NART 15VR NART 15VUUR 35 18 19 29 0.5 102 /106 1,190 / 1,900 940 / 2,100 270 10,000 / 3,500
17 NART 17R NART 17UUR NART 17VR NART 17VUUR 40 20 21 32.5 0.5 149 / 155 1,540 / 2,440 1,220 / 2,690 320 9,500 / 3,000
20 NART 20R NART 20UUR NART 20VR NART 20VUUR 47 24 25 38 0.5 250 / 255 2,010 / 3,170 1,760 / 3,840 390 8,000 / 2,500
25 NART 25R NART 25UUR NART 25VR NART 25VUUR 52 24 25 43 0.5 285 / 295 2,160 / 3,470 1,990 / 4,440 450 7,000 / 2,500
30 NART 30R NART 30UUR NART 30VR NART 30VUUR 62 28 29 50.5 0.5 470 / 485 2,920 / 4,540 2,840 / 6,100 570 5,500 / 1,800
35 NART 35R NART 35UUR NART 35VR NART 35VUUR 72 28 29 58 1 640 / 655 3,100 / 4,780 3,140 / 6,650 700 5,000 / 1,700
40 NART 40R NART 40UUR NART 40VR NART 40VUUR 80 30 32 66 1 845 / 865 3,900 / 5,800 4,400 / 8,870 800 4,000 / 1,400
45 NART 45R NART 45UUR NART 45VR NART 45VUUR 85 30 32 72 1 915 / 935 4,070 / 6,110 4,750 / 9,720 870 4,000 / 1,300
50 NART 50R NART 50UUR NART 50VR NART 50VUUR 90 30 32 76 1 980 / 1,010 4,230 / 6,390 5,100 / 10,600 940 3,500 / 1,200
Limiting speed increases 30% in oil lubrication and in case of sealed types, the limiting speed drops about 40% from the tabular data.
Concerning weight, basic dynmic or static load ratings and limiting speed, the former shows the values of caged needle rollers and the latter, the values of full complement of needle rollers.