Technical data

33 parameters

Identification

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.

Comparison and details →

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.

INA

NA4903-XL

Common designation: NA4903

Radial roller bearing

⌀17 × 30 × 13 mm

od EUR 18.29net

+ VAT 23% = EUR 22.50 gross

Last few (5)dispatch within 24 h
NA4903-XL—
EUR 18.29

Cheaper in larger quantities

from 5 pcsEUR 17.92−2%
from 10 pcsEUR 17.74−3%
from 25 pcsEUR 17.37−5%
from 50 pcsEUR 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 →

Symbol (SKU)NA4903-XL#N1>1
EAN4012802250961
Wymiary⌀17 × 30 × 13 mm
Masa38 g

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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.

Need fitting, lubrication or a vibration check?