Needle roller bearing NK21/20 – 21×29×20 mm

4 offers · 4 manufacturers · net prices from PLN 13.67 · dispatch in 2 working days

NK21/20 is a needle roller bearing with a 21 mm bore, 29 mm outside diameter and 20 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: 21 mm
outside D: 29 mm
width B: 20 mm
sealing: open
mass: 0.04 kg
net price from: PLN 13.67

Dimension drawing NK21/20 – one for all brands (ISO dimensions)

Main dimensions
d – bore diameter	21 mm
D – outside diameter	29 mm
B – width	20 mm
mass	0.04 kg

Pictured: ZEN NK21/20. Every brand has its own product page with photo and full description.

Brands and prices NK21/20

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	NK21/20	CN	PLN 13.67PLN 16.81 gross	supplier stockdispatch in 2 working days
NKE	NK21/20	CN	PLN 20.47PLN 25.18 gross	supplier stockdispatch in 2 working days
INA	NK21/20	CN	PLN 35.91PLN 44.17 gross	supplier stockdispatch in 2 working days
SKF	NK21/20	CN	PLN 48.54PLN 59.70 gross	supplier stockdispatch in 2 working days

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

How manufacturers designate NK21/20

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

Manufacturer	Designation	Sealing / design
ZEN	NK21/20	Open
NKE	NK21/20	Open
INA	NK21/20	Open
SKF	NK21/20	Open

Questions about NK21/20

What are the dimensions of bearing NK21/20?

Bore 21 mm, outside diameter 29 mm, width 20 mm. Standardised dimensions – the same for every manufacturer.

Are NK21/20 bearings from different brands interchangeable?

Yes. NK21/20 ZEN, NK21/20 NKE, NK21/20 INA, NK21/20 SKF are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.

How much does bearing NK21/20 cost?

At Castomer from PLN 13.67 to PLN 48.54 net per piece depending on the manufacturer (ZEN, NKE, INA, SKF). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for NK21/20?

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