Needle roller bearing NA4903 – 17×30×13 mm

4 offers · 3 manufacturers · net prices from PLN 31.27 · dispatch in 2 working days

NA4903 is a needle roller bearing with a 17 mm bore, 30 mm outside diameter and 13 mm width, open design (no seals) – for externally lubricated arrangements. The dimensions are standardised, so items from different manufacturers with the same clearance and sealing are interchangeable 1:1. All brands with current net prices are listed below.

bore d: 17 mm
outside D: 30 mm
width B: 13 mm
sealing: open
mass: 0.05 kg
net price from: PLN 31.27

Dimension drawing NA4903 – one for all brands (ISO dimensions)

Main dimensions
d – bore diameter	17 mm
D – outside diameter	30 mm
B – width	13 mm
mass	0.05 kg

Pictured: NKE NA4903. Every brand has its own product page with photo and full description.

Brands and prices NA4903

Net price per piece, gross incl. 23% VAT. Selected items go into one enquiry – we reply within 24 h, with better prices for larger quantities.

Brand	Manufacturer designation	Clearance	Net price	Availability
NKE	NA4903	CN	PLN 31.27PLN 38.46 gross	supplier stockdispatch in 2 working days
NTN	NA4903 R	CN	PLN 42.55PLN 52.34 gross	supplier stockdispatch in 2 working days
NTN	NA4903 LL/3AS	CN	PLN 49.02PLN 60.29 gross	supplier stockdispatch in 2 working days
INA	NA4903-C3	C3	PLN 54.37PLN 66.88 gross	supplier stockdispatch in 2 working days

Can't see your brand? Ask for an offer – we reply within 24 h.

Other versions of NA4903

The same size in another design – open, shielded, tapered bore.

How manufacturers designate NA4903

Each brand uses its own seal and design codes. The designations below describe the same bearing.

Manufacturer	Designation	Sealing / design
NTN	NA4903 R	Open
NKE	NA4903	Open
INA	NA4903-C3	Open

Questions about NA4903

What are the dimensions of bearing NA4903?

Bore 17 mm, outside diameter 30 mm, width 13 mm. Standardised dimensions – the same for every manufacturer.

Are NA4903 bearings from different brands interchangeable?

Yes. NA4903 R NTN, NA4903 NKE, NA4903-C3 INA are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing NA4903 cost?

At Castomer from PLN 31.27 to PLN 54.37 net per piece depending on the manufacturer (NTN, NKE, INA). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for NA4903?

Dispatch in 2 working days from supplier warehouses in the EU. Availability is confirmed in the reply to your enquiry.