Castomer

Deep groove ball bearing 4203 – 17×40×16 mm

6 offers · 5 manufacturers · net prices from PLN 37.63 · dispatch in 2 working days

4203 is a deep groove ball bearing with a 17 mm bore, 40 mm outside diameter and 16 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
40 mm
width B
16 mm
sealing
open
net price from
PLN 37.63

Brands and prices 4203

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.

BrandManufacturer designationClearanceNet priceAvailability
NKE4203 BTV40° contact angle, glass-fibre reinforced polyamide cage (FAG)CN
PLN 37.63PLN 46.28 gross
supplier stockdispatch in 2 working days
NKE4203 BTVC340° contact angle, glass-fibre reinforced polyamide cage (FAG)C3
PLN 37.63PLN 46.28 gross
supplier stockdispatch in 2 working days
KOYO4203CN
PLN 50.11PLN 61.64 gross
supplier stockdispatch in 2 working days
SNR4203 ACN
PLN 62.15PLN 76.44 gross
supplier stockdispatch in 2 working days
FAG4203 BBTVH40° contact angle, solid polyamide cage (FAG)CN
PLN 64.69PLN 79.57 gross
supplier stockdispatch in 2 working days
NSK4203CN
PLN 109.83PLN 135.09 gross
supplier stockdispatch in 2 working days

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

Other versions of 4203

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

How manufacturers designate 4203

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

ManufacturerDesignationSealing / design
NKE4203 BTVOpen
KOYO4203Open
SNR4203 AOpen
FAG4203 BBTVHOpen
NSK4203Open

2RS, 2Z or C3 – which to choose?

2RS (two rubber seals) keeps dust and moisture out but limits speed. 2Z (metal shields) does not touch the ring, so it runs faster and cooler but protects less. 2RZ is the compromise – a non-contact seal.

Choose C3 clearance when the bearing runs hot (electric motors, fans) or with a tight shaft fit. Normal clearance CN is enough for ordinary applications.

The dimensions of 4203 are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.

Questions about 4203

What are the dimensions of bearing 4203?

Bore 17 mm, outside diameter 40 mm, width 16 mm. Standardised dimensions – the same for every manufacturer.

Are 4203 bearings from different brands interchangeable?

Yes. 4203 BTV NKE, 4203 KOYO, 4203 A SNR, 4203 BBTVH FAG, 4203 NSK are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing 4203 cost?

At Castomer from PLN 37.63 to PLN 109.83 net per piece depending on the manufacturer (NKE, KOYO, SNR, FAG, NSK). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for 4203?

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

© 2026 Castomer sp. z o.o. All rights reserved.