Deep groove ball bearing 6811-2Z – 55×72×9 mm

4 offers · 3 manufacturers · net prices from PLN 74.47 · dispatch in 2 working days

6811-2Z is a deep groove ball bearing with a 55 mm bore, 72 mm outside diameter and 9 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: 55 mm
outside D: 72 mm
width B: 9 mm
sealing: 2Z
net price from: PLN 74.47

Dimension drawing 6811-2Z – one for all brands (ISO dimensions)

Main dimensions
d – bore diameter	55 mm
D – outside diameter	72 mm
B – width	9 mm

Pictured: NACHI 6811 ZZ. Every brand has its own product page with photo and full description.

Brands and prices 6811-2Z

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
NACHI	6811 ZZ	CN	PLN 74.47PLN 91.60 gross	supplier stockdispatch in 2 working days
NACHI	6811 ZZC3	C3	PLN 74.47PLN 91.60 gross	supplier stockdispatch in 2 working days
KOYO	6811 ZZ	CN	PLN 103.41PLN 127.19 gross	supplier stockdispatch in 2 working days
NSK	6811 ZZ	CN	PLN 107.72PLN 132.50 gross	supplier stockdispatch in 2 working days

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

Other versions of 6811

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

How manufacturers designate 6811-2Z

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

Manufacturer	Designation	Sealing / design
NACHI	6811 ZZ	2Z – metal shields, both sides
KOYO	6811 ZZ	2Z – metal shields, both sides
NSK	6811 ZZ	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 6811-2Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.

Questions about 6811-2Z

What are the dimensions of bearing 6811-2Z?

Bore 55 mm, outside diameter 72 mm, width 9 mm. Standardised dimensions – the same for every manufacturer.

Are 6811-2Z bearings from different brands interchangeable?

Yes. 6811 ZZ NACHI, 6811 ZZ KOYO, 6811 ZZ NSK are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing 6811-2Z cost?

At Castomer from PLN 74.47 to PLN 107.72 net per piece depending on the manufacturer (NACHI, KOYO, NSK). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for 6811-2Z?

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