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| SBI Track roller bearings can be divided into Yoke type track rollers and Stud type track rollers. In order to be adapted to different working conditions, SBI Track roller bearings can also be with axial guidance or without axial guidance, with seals or without seals.
We supply SBI series track rollers, the application features are as follows:
1.RSTO & STO: Yoke type Track roller bearings with outer ring, inner ring, needle rollers & cage assembly. These types can be used in high speed rotating conditions.
2.NATR: Yoke type track rollers with axial guidance by washers, gap seals, with inner ring. This type can be used to carry heavy loads in medium speed rotating conditions.
3.NATV: Yoke type track rollers with full complement needle rollers in structure. This type can be used to carry relatively heavier loads in low speed rotating conditions.
4.NUTR: Yoke type track rollers with full complement cylindrical rollers in structure. This type can be used to carry extra heavy loads. It can also carry some heavy shock loads from axial direction in high speed rotating conditions.
5.KR: Stud type track rollers with needle rollers & cage assembly. This type can be used to carry heavy loads in medium speed rotating conditions.
6.KRV: Stud type track rollers with full complement needle rollers in structure. This type can be used to carry relatively heavier loads in low speed rotating conditions.
7.NUKR: Stud type track rollers with full complement cylindrical rollers in structure. This type can be used to carry extra heavy loads. It can also carry some heavy shock loads from axial direction.
SBI can also develop and manufacture Track roller bearings in other structure according to customers’ request. We also can supply Track roller bearings with contact seals (the bearing type code with suffix “-2RS”). For those with suffix “X”, it means the outer surface of the bearings is cylindrical.
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| Dimension(mm) |
Load ratings (KN) |
As support part(KN) |
Weigh (kg) |
Designation |
| d |
D |
C |
B |
Cr |
Cor |
Cw |
Cow |
SBI RTL |
INA |
| 5 |
16 |
11 |
12 |
6.4 |
8.5 |
4.85 |
6.5 |
0.015 |
NATV5 NATV5X |
NATV5 NATV5X |
| 6 |
19 |
11 |
12 |
7.3 |
108 |
5.5 |
7.9 |
0.021 |
NATV6 NATV6X |
NATV6 NATV6X |
| 8 |
24 |
14 |
15 |
10.4 |
15.6 |
7.8 |
11.4 |
0.042 |
NATV8 NATV8X |
NATV8 NATV8X |
| 10 |
30 |
14 |
15 |
12.2 |
19 |
9.5 |
14.6 |
0.065 |
NATV10 NATV10X |
NATV10 NATV10X |
| 12 |
32 |
14 |
15 |
13.2 |
21.7 |
9.7 |
15.4 |
0.072 |
NATV12 NATV12X |
NATV12 NATV12X |
| 15 |
35 |
18 |
19 |
18.3 |
35 |
12.8 |
23 |
0.105 |
NATV15 NATV15X |
NATV15 NATV15X |
| 17 |
40 |
20 |
21 |
21 |
39.5 |
14.8 |
26.5 |
0.152 |
NATV17 NATV17X |
NATV17 NATV17X |
| 20 |
47 |
24 |
25 |
28 |
59 |
20.6 |
42 |
0.254 |
NATV20 NATV20X |
NATV20 NATV20X |
| 25 |
52 |
24 |
25 |
31 |
72 |
20.5 |
44 |
0.285 |
NATV25 NATV25X |
NATV25 NATV25X |
| 30 |
62 |
28 |
29 |
48.5 |
108 |
30.5 |
63 |
0.481 |
NATV30 NATV30X |
NATV30 NATV30X |
| 35 |
72 |
28 |
29 |
53 |
127 |
33 |
73 |
0.647 |
NATV35 NATV35X |
NATV35 NATV35X |
| 40 |
80 |
30 |
32 |
66 |
159 |
41 |
90 |
0.89 |
NATV40 NATV40X |
NATV40 NATV40X |
| 45 |
85 |
30 |
32 |
51 |
101 |
32.5 |
59 |
0.91 |
NATV45 NATV45X |
NATV45 NATV45X |
| 50 |
90 |
30 |
32 |
72 |
191 |
40.5 |
93 |
0.99 |
NATV50 NATV50X |
NATV50 NATV50X |
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