Deep groove ball bearing 6306-Z – 30×72×19 mm

16 offers · 8 manufacturers · net prices from PLN 18.31 · dispatch in 2 working days

6306-Z is a deep groove ball bearing with a 30 mm bore, 72 mm outside diameter and 19 mm width, with one metal shield (Z). 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: 30 mm
outside D: 72 mm
width B: 19 mm
sealing: Z
mass: 0.35 kg
net price from: PLN 18.31

Dimension drawing 6306-Z – one for all brands (ISO dimensions)

Main dimensions
d – bore diameter	30 mm
D – outside diameter	72 mm
B – width	19 mm
dynamic load rating C	29.6 kN (per SKF catalogue)
static load rating C₀	16 kN (per SKF catalogue)
mass	0.35 kg

Pictured: INNE 6306-ZECM. Every brand has its own product page with photo and full description.

Brands and prices 6306-Z

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
INNE	6306-ZECMEC design, machined brass cage (SKF)	CN	PLN 18.31PLN 22.52 gross	supplier stockdispatch in 2 working days
NACHI	6306-ZEC3reinforced design, higher load rating	C3	PLN 18.31PLN 22.52 gross	supplier stockdispatch in 2 working days
FAG	6306-C2ZC3	C3	PLN 20.47PLN 25.18 gross	supplier stockdispatch in 2 working days
NKE	6306-ZC3	C3	PLN 21.33PLN 26.24 gross	supplier stockdispatch in 2 working days
NKE	6306-Z	CN	PLN 21.98PLN 27.04 gross	supplier stockdispatch in 2 working days
NTN	6306-ZU1	CN	PLN 26.19PLN 32.21 gross	supplier stockdispatch in 2 working days
FAG	6306-ZRC3	C3	PLN 27.54PLN 33.87 gross	supplier stockdispatch in 2 working days
SKF	6306-Z	CN	PLN 32.07PLN 39.45 gross	supplier stockdispatch in 2 working days
SNR	6306 Z	CN	PLN 33.80PLN 41.57 gross	supplier stockdispatch in 2 working days
SKF	6306-ZC3	C3	PLN 35.10PLN 43.17 gross	supplier stockdispatch in 2 working days
SNR	6306 FT150ZZ	CN	PLN 61.46PLN 75.60 gross	supplier stockdispatch in 2 working days
SNR	6306 HT200ZZ	CN	PLN 118.32PLN 145.53 gross	supplier stockdispatch in 2 working days

▸Special designs 6306-Z (4) – stainless steel, snap ring, manufacturer specials

NACHI	6306-ZENRCMreinforced design, higher load rating, snap ring groove with snap ring, clearance for electric motors (quiet running)	CN	PLN 23.76PLN 29.22 gross	supplier stockdispatch in 2 working days
NSK	6306-ZNRsnap ring groove with snap ring	CN	PLN 30.51PLN 37.53 gross	supplier stockdispatch in 2 working days
NSK	6306-ZNRC3snap ring groove with snap ring	C3	PLN 30.51PLN 37.53 gross	supplier stockdispatch in 2 working days
SKF	6306-ZNRsnap ring groove with snap ring	CN	PLN 45.85PLN 56.40 gross	supplier stockdispatch in 2 working days

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

Other versions of 6306

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

How manufacturers designate 6306-Z

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

Manufacturer	Designation	Sealing / design
SKF	6306-Z	Z – metal shield, one side
SNR	6306 Z	Z – metal shield, one side
NACHI	6306-ZEC3	Z – metal shield, one side
FAG	6306-C2ZC3	Z – metal shield, one side
NKE	6306-ZC3	Z – metal shield, one side
NSK	6306-ZNR	Z – metal shield, one side
INNE	6306-ZECM	Z – metal shield, one side
NTN	6306-ZU1	Z – metal shield, one side

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 6306-Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.

Questions about 6306-Z

What are the dimensions of bearing 6306-Z?

Bore 30 mm, outside diameter 72 mm, width 19 mm. Standardised dimensions – the same for every manufacturer.

Are 6306-Z bearings from different brands interchangeable?

Yes. 6306-Z SKF, 6306 Z SNR, 6306-ZEC3 NACHI, 6306-C2ZC3 FAG, 6306-ZC3 NKE are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing 6306-Z cost?

At Castomer from PLN 18.31 to PLN 118.32 net per piece depending on the manufacturer (SKF, SNR, NACHI, FAG, NKE, NSK). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for 6306-Z?

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