Technical data
33 parametersIdentification
- Manufacturer
- INA
- Type
- Radial roller bearing
- Part number (SKU)
- NA4903-XL#N1>1
- EAN
- 4012802250961
- Cage
- Standard
Dimensions
- Bore d
- 17 mm
- Outside diameter D
- 30 mm
- Width B
- 13 mm
- Mass
- 38 g
- Radial clearance
- CN (Group N)
Load ratings and operation
- Dynamic load rating C
- 12400 N
- Static load rating C₀
- 14600 N
- Limiting speed
- 20000 1/min
- Sealing
- without
Full manufacturer specification19 parameters · expand
- Axial displacement
- 0.5 mm
- Cage
- Standard
- Category
- XL
- Coating
- without
- Fatigue load limit, radial
- 2650.0 N
- Inner ring raceway diameter
- 22.0 mm
- Limiting speed for grease lubrication
- 12000.0 1/min
- Lubrication hole
- with
- Max. operating temperature
- 120.0 °C
- Min. operating temperature
- -30.0 °C
- Minimum chamfer
- 0.3 mm
- Number of rows
- 1
- PFAS
- no
- Radial internal clearance
- CN (group N)
- REACH
- REACH compliant
- Reference speed
- 10200.0 1/min
- RoHS
- RoHS compliant
- Sealing
- without
- Special features
- without
Classification
- Manufacturer category
- Rolling and Plain Bearings › Roller Bearings › Needle Roller Bearings › Machined Needle Roller Bearings
- eCl@ss class
- 23-05-09-07
- UNSPSC
- 31171512
Description
Carries radial loads through a needle roller and cage assembly running on an inner ring with a solid outer ring guiding the rollers on both sides. Bore diameter is 17.0 mm, outside diameter 30.0 mm, width 13.0 mm, and net mass is 0.038 kg. The bearing is rated for a limiting speed of 20000 1/min and a reference speed of 10200 1/min, with normal radial internal clearance (CN, Group N) and a standard cage. The design has no sealing, so lubricant access and contamination protection must be provided externally, and mounting should account for open sides. Normal clearance (CN) suits standard shaft fits without preload requirements, and the compact section (17 x 30 x 13 mm) allows use where radial space is limited but full needle roller load capacity is still needed.
The same bearing from other manufacturers (3 designations)
Same size and design — suffix notation differs between brands.
INA
NA4903-XL
original — this page
equivalent designation
KOYO
NA4903
NADELLA
NA 4903
NTN
NA4903
This is a dimensional and design equivalent, not the same product. If in doubt, ask us before ordering.
NA4903-XL
Common designation: NA4903
Radial roller bearing
⌀17 × 30 × 13 mm
od EUR 18.29net
+ VAT 23% = EUR 22.50 gross
Cheaper in larger quantities
| from 5 pcs | EUR 17.92 | −2% |
| from 10 pcs | EUR 17.74 | −3% |
| from 25 pcs | EUR 17.37 | −5% |
| from 50 pcs | EUR 17.01 | −7% |
Dispatched within 24 h from our own warehouse
Shipping within the EU: DHL, GLS, from EUR 13.18 net. Transit time 3–5 business days after dispatch. Shipping and returns →
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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.
