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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 |
3.8 |
3.75 |
3.15 |
3.3 |
0.014 |
NATR5 NATR5X |
NATR5 NATR5X |
| 6 |
19 |
11 |
12 |
4.25 |
4.6 |
3.5 |
3.9 |
0.02 |
NATR6 NATR6X |
NATR6 NATR6X |
| 8 |
24 |
14 |
15 |
6.8 |
7.7 |
5.5 |
6.4 |
0.041 |
NATR8 NATR8X |
NATR8 NATR8X |
| 10 |
30 |
14 |
15 |
8.1 |
9.7 |
6.8 |
8.4 |
0.064 |
NATR10 NATR10X |
NATR10 NATR10X |
| 12 |
32 |
14 |
15 |
8.7 |
11 |
6.9 |
8.8 |
0.071 |
NATR12 NATR12X |
NATR12 NATR12X |
| 15 |
35 |
18 |
19 |
12.9 |
19 |
9.7 |
14.1 |
0.103 |
NATR15 NATR15X |
NATR15 NATR15X |
| 17 |
40 |
20 |
21 |
14.2 |
20.4 |
10.9 |
15.5 |
0.144 |
NATR17 NATR17X |
NATR17 NATR17X |
| 20 |
47 |
24 |
25 |
19.5 |
32 |
15.5 |
25.5 |
0.246 |
NATR20 NATR20X |
NATR20 NATR20X |
| 25 |
52 |
24 |
25 |
21.2 |
38 |
15.4 |
26.5 |
0.275 |
NATR25 NATR25X |
NATR25 NATR25X |
| 30 |
62 |
28 |
29 |
34 |
59 |
23.6 |
38.5 |
0.47 |
NATR30 NATR30X |
NATR30 NATR30X |
| 35 |
72 |
28 |
29 |
37 |
69 |
25.5 |
44.5 |
0.635 |
NATR35 NATR35X |
NATR35 NATR35X |
| 40 |
80 |
30 |
32 |
49 |
94 |
33 |
59 |
0.805 |
NATR40 NATR49X |
NATR40 NATR49X |
| 45 |
85 |
30 |
32 |
51 |
101 |
32.5 |
59 |
0.91 |
NATR45 NATR45X |
NATR45 NATR45X |
| 50 |
90 |
30 |
32 |
52 |
108 |
32 |
59 |
0.96 |
NATR50 NATR50X |
NATR50 NATR50X |
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