Combined needle roller bearings with or without inner ring are radial needle roller bearing and an axial cylindrical roller bearing with a plastic cage. They do not have an inner ring and require a shaft raceway that is hardened and ground. If the shaft cannot be used as a rolling bearing raceway, inner rings IR can be used instead.
Combined radial/axial bearings: NX series
Designation |
Dimensions(mm) |
Basic load ratings |
Recommended inner ring Designation |
Suitable snap rings Designation |
for oil lubrication |
for grease lubrication |
Fw |
D |
C
–0.25 |
C1 |
dw
E8 |
r
min. |
radial |
axial |
dyn.
Cr
KN |
stat.
Cor
KN |
dyn.
Ca
KN |
stat.
Coa
KN |
NX7-TV |
NX7-Z-TV |
7 |
14 |
18 |
4.7 |
7 |
0.3 |
2.85 |
2.65 |
3.15 |
4.3 |
– |
WR14 |
NX10 |
NX10-Z |
10 |
19 |
18 |
4.7 |
10 |
0.3 |
4.45 |
3.7 |
4.6 |
7.2 |
IR6X10X10-IS1 |
WR19 |
NX12 |
NX12-Z |
12 |
21 |
18 |
4.7 |
12 |
0.3 |
4.8 |
4.3 |
4.85 |
8.2 |
IR8X12X10-IS1 |
WR21 |
NX15 |
NX15-Z |
15 |
24 |
28 |
8 |
15 |
0.3 |
10.7 |
12.7 |
5.6 |
10.4 |
IR12X15X16 |
WR24 |
NX17 |
NX17-Z |
17 |
26 |
28 |
8 |
17 |
0.3 |
11.9 |
15 |
5.8 |
11.5 |
IR14X17X17 |
WR26 |
NX20 |
NX20-Z |
20 |
30 |
28 |
8 |
20 |
0.3 |
13 |
17.5 |
7 |
14.7 |
IR17X20X16 |
WR30 |
NX25 |
NX25-Z |
25 |
37 |
30 |
8 |
25 |
0.3 |
14.9 |
22.4 |
11.1 |
24.3 |
IR20X25X16-IS1 |
WR37 |
NX30 |
NX30-Z |
30 |
42 |
30 |
10 |
30 |
0.3 |
22.6 |
36 |
11.7 |
28 |
IR25X30X20 |
WR42 |
NX35 |
NX35-Z |
35 |
47 |
30 |
10 |
35 |
0.3 |
24.3 |
41.5 |
12.4 |
32.5 |
IR30X35X20 |
WR47 |