Page 212 - needle bearings

Needle roller bearings with thrust cylindrical roller bearings
NTN

With inner ring

Type NKXRʴʴIR
Type NKXRʝʝZʴʴIR

Type NKXRʴIR Type NKXRʝZʴIR
(Open type) (With cover)

d 12ʙ45mm

Boundary dimensions Basic load ratings
dynamic static dynamic static dynamic static dynamic static
mm N kgf N kgf
d dw D D1 D2 B C C1 C2 F a rs min 1) r1s min 1) Radial Axial
–0 –0
–0.25 –0.20 Cr Cor Cr Cor Ca Coa Ca Coa
12 15 +0.050 24 28 29 16 23 9 6.5 15 23.7 0.3 0.3 8 250 10 200 840 1 040 12 900 28 600 1 310 2 920
+0.032
14 17 +0.050 26 30 31 17 25 9 8 17 25.7 0.3 0.3 10 400 14 400 1 060 1 460 13 400 31 000 1 370 3 150
+0.032
+0.061
17 20 +0.040 30 35 36 20 30 10 10.5 20 30.7 0.3 0.3 16 400 27 100 1 670 2 760 20 200 46 500 2 060 4 700
+0.061
20 25 +0.040 37 42 43 20 30 11 9.5 25 37.7 0.6 0.3 14 200 24 000 1 450 2 450 27 300 68 000 2 780 6 900
+0.061
25 30 +0.040 42 47 48 20 30 11 9.5 30 42.7 0.6 0.3 22 300 39 500 2 280 4 000 27 800 72 500 2 840 7 400
+0.075
30 35 +0.050 47 52 53 20 30 12 9 35 47.7 0.6 0.3 20 000 36 000 2 040 3 650 31 000 87 000 3 150 8 900
+0.075
35 40 +0.050 52 60 61 20 32 13 10 40 55.7 0.6 0.3 25 900 52 500 2 650 5 350 43 000 121 000 4 350 12 400
+0.075
40 45 +0.050 58 65 66.5 20 32 14 9 45 60.5 0.6 0.3 27 600 59 000 2 810 6 000 45 500 135 000 4 650 13 800
+0.075
45 50 +0.050 62 70 71.5 25 35 14 10 50 65.5 0.6 0.6 27 900 62 000 2 850 6 300 48 000 150 000 4 900 15 300

Note 1) Allowable minimum chamfer dimension r or r1.
Remarks: Nominal code number of inner ring comprises IR. Bore diameterʷouter diameterʷwidth.
B-150