Deep groove ball bearing 634-2Z – 4×16×5 mm
5 offers · 4 manufacturers · net prices from PLN 5.77 · dispatch in 2 working days
634-2Z is a deep groove ball bearing with a 4 mm bore, 16 mm outside diameter and 5 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
- 4 mm
- outside D
- 16 mm
- width B
- 5 mm
- sealing
- 2Z
- mass
- 0.01 kg
- net price from
- PLN 5.77
Brands and prices 634-2Z
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 | |
|---|---|---|---|---|---|
| NKE | 634-2Z | CN | PLN 5.77PLN 7.10 gross | supplier stockdispatch in 2 working days | |
| FAG | 634-2ZR | CN | PLN 6.75PLN 8.30 gross | supplier stockdispatch in 2 working days | |
| NSK | 634-ZZ1MC3 | C3 | PLN 7.40PLN 9.10 gross | supplier stockdispatch in 2 working days | |
| SKF | 634-ZZ | CN | PLN 12.42PLN 15.28 gross | supplier stockdispatch in 2 working days |
▸Special designs 634-2Z (1) – stainless steel, snap ring, manufacturer specials
| SKF | W634-ZZ | CN | PLN 38.02PLN 46.76 gross | supplier stockdispatch in 2 working days |
Can't see your brand? Ask for an offer – we reply within 24 h.
Other versions of 634
The same size in another design – open, shielded, tapered bore.
How manufacturers designate 634-2Z
Each brand uses its own seal and design codes. The designations below describe the same bearing.
| Manufacturer | Designation | Sealing / design |
|---|---|---|
| SKF | 634-ZZ | 2Z – metal shields, both sides |
| NKE | 634-2Z | 2Z – metal shields, both sides |
| FAG | 634-2ZR | 2Z – metal shields, both sides |
| NSK | 634-ZZ1MC3 | 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 634-2Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.
Questions about 634-2Z
What are the dimensions of bearing 634-2Z?
Bore 4 mm, outside diameter 16 mm, width 5 mm. Standardised dimensions – the same for every manufacturer.
Are 634-2Z bearings from different brands interchangeable?
Yes. 634-ZZ SKF, 634-2Z NKE, 634-2ZR FAG, 634-ZZ1MC3 NSK are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.
How much does bearing 634-2Z cost?
At Castomer from PLN 5.77 to PLN 12.42 net per piece depending on the manufacturer (SKF, NKE, FAG, NSK). Prices are updated from supplier warehouses; larger quantities get an individual offer.
What is the delivery time for 634-2Z?
Dispatch in 2 working days from supplier warehouses in the EU. Availability is confirmed in the reply to your enquiry.
