Deep groove ball bearing 6304-2Z – 20×52×15 mm

31 offers · 9 manufacturers · net prices from PLN 6.21 · dispatch in 2 working days

6304-2Z is a deep groove ball bearing with a 20 mm bore, 52 mm outside diameter and 15 mm width, with two metal shields (2Z) – non-contact, for higher speeds. 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: 20 mm
outside D: 52 mm
width B: 15 mm
sealing: 2Z
mass: 0.15 kg
net price from: PLN 6.21

Dimension drawing 6304-2Z – one for all brands (ISO dimensions)

Main dimensions
d – bore diameter	20 mm
D – outside diameter	52 mm
B – width	15 mm
dynamic load rating C	15.9 kN (per SKF catalogue)
static load rating C₀	7.8 kN (per SKF catalogue)
mass	0.15 kg

Pictured: ZEN 6304-2ZC3. Every brand has its own product page with photo and full description.

Brands and prices 6304-2Z

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
ZEN	6304-2ZC3	C3	PLN 6.21PLN 7.64 gross	supplier stockdispatch in 2 working days
ZEN	6304-2Z	CN	PLN 6.70PLN 8.24 gross	supplier stockdispatch in 2 working days
SNR	6304 ZZC3	C3	PLN 8.15PLN 10.02 gross	supplier stockdispatch in 2 working days
SNR	6304 ZZ	CN	PLN 8.15PLN 10.02 gross	supplier stockdispatch in 2 working days
ZEN	6304-2ZNR	CN	PLN 8.43PLN 10.37 gross	supplier stockdispatch in 2 working days
NKE	6304-2ZC3	C3	PLN 8.91PLN 10.96 gross	supplier stockdispatch in 2 working days
NKE	6304-2Z	CN	PLN 9.12PLN 11.22 gross	supplier stockdispatch in 2 working days
INNE	6304-ZZECMEC design, machined brass cage (SKF)	CN	PLN 10.80PLN 13.28 gross	supplier stockdispatch in 2 working days
INNE	6304-ZZEC3reinforced design, higher load rating	C3	PLN 10.85PLN 13.35 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZ	CN	PLN 10.85PLN 13.35 gross	supplier stockdispatch in 2 working days
NSK	6304-ZZ	CN	PLN 11.45PLN 14.08 gross	supplier stockdispatch in 2 working days
NSK	6304-ZZC3	C3	PLN 11.45PLN 14.08 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZC3	C3	PLN 11.72PLN 14.42 gross	supplier stockdispatch in 2 working days
TIMKEN	6304-ZZ-C3	C3	PLN 12.26PLN 15.08 gross	supplier stockdispatch in 2 working days
TIMKEN	6304-ZZ	CN	PLN 12.26PLN 15.08 gross	supplier stockdispatch in 2 working days
KOYO	6304 ZZC3	C3	PLN 13.87PLN 17.06 gross	supplier stockdispatch in 2 working days
KOYO	6304 ZZCMclearance for electric motors (quiet running)	CN	PLN 13.87PLN 17.06 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZC3GJNriveted pressed steel cage	C3	PLN 19.82PLN 24.38 gross	supplier stockdispatch in 2 working days
NSK	6304-ZZC4	C4	PLN 21.23PLN 26.11 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZC3WT	C3	PLN 22.89PLN 28.15 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZC4	C4	PLN 23.38PLN 28.76 gross	supplier stockdispatch in 2 working days
NSK	6304 ZZNR	CN	PLN 24.73PLN 30.42 gross	supplier stockdispatch in 2 working days
SNR	6304 LTZZ	CN	PLN 25.71PLN 31.62 gross	supplier stockdispatch in 2 working days
SKF	6304-2ZNR	CN	PLN 51.67PLN 63.55 gross	supplier stockdispatch in 2 working days
NKE	6304-2Z-SS	CN	PLN 87.64PLN 107.80 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZ/VA201	CN	PLN 144.82PLN 178.13 gross	supplier stockdispatch in 2 working days
SKF	6304-ZZ/VA208	CN	PLN 207.25PLN 254.92 gross	supplier stockdispatch in 2 working days
SKF	6304-2Z/VA228	CN	PLN 234.37PLN 288.28 gross	supplier stockdispatch in 2 working days

▸Special designs 6304-2Z (3) – stainless steel, snap ring, manufacturer specials

NACHI	6304-ZZENRCMreinforced design, higher load rating, snap ring groove with snap ring, clearance for electric motors (quiet running)	CN	PLN 14.04PLN 17.27 gross	supplier stockdispatch in 2 working days
SKF	E2.6304-2Z/C3	C3	PLN 19.07PLN 23.46 gross	supplier stockdispatch in 2 working days
SKF	W6304-ZZ	CN	PLN 185.33PLN 227.96 gross	supplier stockdispatch in 2 working days

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

Other versions of 6304

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

How manufacturers designate 6304-2Z

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

Manufacturer	Designation	Sealing / design
SKF	6304-ZZ	2Z – metal shields, both sides
NSK	6304-ZZ	2Z – metal shields, both sides
ZEN	6304-2ZC3	2Z – metal shields, both sides
SNR	6304 ZZC3	2Z – metal shields, both sides
NKE	6304-2ZC3	2Z – metal shields, both sides
INNE	6304-ZZECM	2Z – metal shields, both sides
TIMKEN	6304-ZZ-C3	2Z – metal shields, both sides
KOYO	6304 ZZC3	2Z – metal shields, both sides
NACHI	6304-ZZENRCM	2Z – metal shields, both sides

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 6304-2Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.

Questions about 6304-2Z

What are the dimensions of bearing 6304-2Z?

Bore 20 mm, outside diameter 52 mm, width 15 mm. Standardised dimensions – the same for every manufacturer.

Are 6304-2Z bearings from different brands interchangeable?

Yes. 6304-ZZ SKF, 6304-ZZ NSK, 6304-2ZC3 ZEN, 6304 ZZC3 SNR, 6304-2ZC3 NKE are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing 6304-2Z cost?

At Castomer from PLN 6.21 to PLN 234.37 net per piece depending on the manufacturer (SKF, NSK, ZEN, SNR, NKE, INNE). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for 6304-2Z?

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