Technical data
22 parametersIdentification
- Manufacturer
- INA
- Type
- Needle roller/angular contact ball bearing
- Part number (SKU)
- NKIA5903-XL#N5
- EAN
- 4012802731521
Dimensions
- Bore d
- 17 mm
- Outside diameter D
- 30 mm
- Width B
- 18 mm
- Mass
- 52.7 g
Load ratings and operation
- Dynamic load rating C
- 12400 N
- Static load rating C₀
- 14600 N
- Limiting speed
- 20600 1/min
Full manufacturer specification11 parameters · expand
- Basic dynamic load rating, axial
- 3150.0 N
- Basic static load rating, axial
- 4900.0 N
- Fatigue limit load, radial
- 2650.0 N
- Fatigue load limit, axial
- 222.0 N
- Fatigue load limit, radial
- 2650.0 N
- Inner ring raceway diameter
- 22.0 mm
- Minimum chamfer
- 0.3 mm
- PFAS
- no
- REACH
- REACH compliant
- Reference speed
- 15000.0 1/min
- RoHS
- RoHS compliant
Classification
- Manufacturer category
- Rolling and Plain Bearings › Combined Axial-, Radial-Bearings › Needle Roller/Angular Contact Ball Bearings
- eCl@ss class
- 23-05-12-01
- UNSPSC
- 31171512
Description
This combined bearing carries axial and radial loads through an integrated needle roller section paired with an angular contact ball bearing arrangement. Bore diameter is 17.0 mm, outside diameter 30.0 mm, width 18.0 mm, and net mass 52.7 g. The limiting speed is rated at 20600.0 1/min, with a reference speed of 15000.0 1/min. The combined needle roller and angular contact ball bearing design allows radial and axial loads to be taken up within a single, compact envelope, reducing the axial space normally required for separate bearing arrangements. The angular contact ball bearing component supports axial loads from one direction, so mounting orientation must respect the intended load path. Given the stated speed ratings, the bearing suits applications requiring simultaneous radial and one-directional axial support without additional bearing stages.
The same bearing from other manufacturers (1 designations)
Same size and design — suffix notation differs between brands.
INA
NKIA5903-XL
original — this page
equivalent designation
SKF
NKIA5903
This is a dimensional and design equivalent, not the same product. If in doubt, ask us before ordering.
NKIA5903-XL
Common designation: NKIA5903
Needle roller/angular contact ball bearing
⌀17 × 30 × 18 mm
od EUR 18.80net
+ VAT 23% = EUR 23.12 gross
This item is brought in to order (about 10 working days) and we sell it to business customers. Open a business account.
Cheaper in larger quantities
| from 5 pcs | EUR 18.42 | −2% |
| from 10 pcs | EUR 18.24 | −3% |
| from 25 pcs | EUR 17.86 | −5% |
| from 50 pcs | EUR 17.48 | −7% |
Our own item, temporarily out of stock — write to us for a date.
Shipping within the EU: DHL, GLS, from EUR 13.16 net. Transit time 3–5 business days after dispatch. Shipping and returns →
Buying for a company?
Open a business account →Documentation
Datasheet (PDF)RoHS / REACH compliance declaration (PDF)Opening a document for the first time can take up to a minute while the manufacturer prepares it.




