IKO NATA5903 Needle Roller and Angular Contact Ball Bearing, 17 x 30 x 18 mm
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IKO NATA59 combined needle roller bearings pair a caged needle roller bearing with an angular contact ball bearing. The needle rollers carry radial load and the ball bearing carries axial load in one direction, in a compact unit. This page lists 12 sizes: 15 to 65 mm bore, 28 to 90 mm outside diameter.
Combined type bearings are compact and economical, can take radial and axial loads at the same time, and are widely used in machine tools, textile machinery and industrial machinery. The bearing has an inner ring.
For axial load in both directions, mount two NATA bearings symmetrically, or use the NATB type with a three-point contact ball bearing, which takes two-direction axial load in one unit.
Where this product is used
- Machine tools and industrial machinery
- Shafts that see radial load and axial load in one direction at the same time
- Compact combined radial and thrust supports
Features
- Combined needle roller and angular contact ball bearing, radial and one-direction axial load (NATA59 series), 12 sizes
- Bore 15 to 65 mm, outside diameter 28 to 90 mm
- Needle roller bearing and angular contact ball bearing in one unit, taking radial and axial load together
- Axial load in one direction (angular contact ball bearing)
- Basic dynamic load ratings radial 7.71 to 43.8 kN, static 10.2 to 90.2 kN
- Allowable rotational speed 5,500 to 20,000 rpm (oil lubrication)
Key specifications
| Specification | Detail |
|---|---|
| Brand | IKO (Nippon Thompson Co., Ltd., Japan) |
| Type | Combined needle roller and angular contact ball bearing, radial and one-direction axial load (NATA59 series) |
| Series | NATA59 |
| Models | NATA5902 to NATA5913 (12 sizes) |
| Bore diameter d | 15 to 65 mm |
| Outside diameter D | 28 to 90 mm |
| Width C | 18 to 34 mm |
| Oil hole | One in the outer ring, with an oil groove |
| Grease | Not prepacked: lubricate before use |
| Basic dynamic load rating C, radial | 7.71 to 43.8 kN |
| Basic dynamic load rating C, axial | 1.9 to 11 kN |
| Basic static load rating C0, radial | 10.2 to 90.2 kN |
| Basic static load rating C0, axial | 2.92 to 28.7 kN |
| Allowable rotational speed | 5,500 to 20,000 rpm (oil lubrication; up to 60% of this for grease lubrication) |
Available sizes
| Model | d (mm) | D (mm) | C (mm) | C radial (kN) | C axial (kN) | C0 radial (kN) | C0 axial (kN) | Speed (rpm) |
|---|---|---|---|---|---|---|---|---|
| NATA5902 | 15 | 28 | 18 | 7.71 | 1.9 | 10.2 | 2.92 | 20,000 |
| NATA5903 | 17 | 30 | 18 | 8.22 | 2.05 | 11.5 | 3.34 | 18,000 |
| NATA5904 | 20 | 37 | 23 | 14.3 | 3.81 | 18.4 | 6.11 | 16,000 |
| NATA5905 | 25 | 42 | 23 | 15.8 | 4.3 | 22.1 | 7.52 | 13,000 |
| NATA5906 | 30 | 47 | 23 | 17.7 | 4.55 | 26.8 | 8.46 | 11,000 |
| NATA5907 | 35 | 55 | 27 | 24 | 4.89 | 42.1 | 9.87 | 9,500 |
| NATA5908 | 40 | 62 | 30 | 30.6 | 5.35 | 60.4 | 11.8 | 8,500 |
| NATA5909 | 45 | 68 | 30 | 32.6 | 5.45 | 68.5 | 12.7 | 7,000 |
| NATA5910 | 50 | 72 | 30 | 33.6 | 5.66 | 72.5 | 13.6 | 7,000 |
| NATA5911 | 55 | 80 | 34 | 39.5 | 10.4 | 74.4 | 24.7 | 6,500 |
| NATA5912 | 60 | 85 | 34 | 41.8 | 10.7 | 82.2 | 26.7 | 6,000 |
| NATA5913 | 65 | 90 | 34 | 43.8 | 11 | 90.2 | 28.7 | 5,500 |
C and C0 are the basic dynamic and static load ratings in the radial and axial directions. Width C is given for both types, and B (inner ring width) for NATB.
Selecting the right option
Choose the size with the Inside Diameter (mm) option, which is the bore of the bearing.
NATA takes axial load in one direction. Choose NATB for axial load in both directions in one unit.
Fitting and use
These bearings are not prepacked with grease, so lubricate them before use. The outer ring has an oil groove and an oil hole. The allowable rotational speed in the tables is for oil lubrication; for grease lubrication use up to 60% of it.
Use a shaft tolerance of k5 and a housing bore tolerance of M6. Axial load should not exceed 25% of the radial load. For axial load in both directions, mount two NATA bearings symmetrically with an axial clearance of 0.2 to 0.3 mm.
Related products
Parts that go with this range: NATB: axial load in both directions.
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IKO NATA59 Needle Roller Bearings with Angular Contact Ball Bearing, 15 to 65 mm Bore (Metric): 17
SKU: A0154348 | Model: NATA5903/IKO
IKO NATA5903 combined needle roller and angular contact ball bearing, 17 x 30 x 18 mm, C 8.22 kN. Order online from AIMS Industrial.