Deep groove ball bearing 638-2Z – 8×28×9 mm
13 offers · 3 manufacturers · net prices from PLN 3.57 · dispatch in 2 working days
638-2Z is a deep groove ball bearing with a 8 mm bore, 28 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
- 8 mm
- outside D
- 28 mm
- width B
- 9 mm
- sealing
- 2Z
- mass
- 0 kg
- net price from
- PLN 3.57
Brands and prices 638-2Z
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 | 638-2Z | CN | PLN 3.57PLN 4.39 gross | supplier stockdispatch in 2 working days | |
| NSK | 638-ZZ1MC3 | C3 | PLN 15.12PLN 18.60 gross | supplier stockdispatch in 2 working days | |
| SKF | 638/4-ZZ | CN | PLN 19.60PLN 24.11 gross | supplier stockdispatch in 2 working days | |
| SKF | 638/8-ZZ | CN | PLN 22.30PLN 27.43 gross | supplier stockdispatch in 2 working days | |
| SKF | 638/5-ZZ | CN | PLN 23.06PLN 28.36 gross | supplier stockdispatch in 2 working days |
▸Special designs 638-2Z (8) – stainless steel, snap ring, manufacturer specials
| SKF | W638/3-ZZ | CN | PLN 27.00PLN 33.21 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/4-ZZ | CN | PLN 28.07PLN 34.53 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/2-ZZ | CN | PLN 29.81PLN 36.67 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/8-ZZ | CN | PLN 34.02PLN 41.84 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/5-2Z | CN | PLN 36.88PLN 45.36 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/2.5-ZZ | CN | PLN 41.15PLN 50.61 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/8 R-2Z | CN | PLN 48.49PLN 59.64 gross | supplier stockdispatch in 2 working days | |
| SKF | W638/4 R-2Z | CN | PLN 51.84PLN 63.76 gross | supplier stockdispatch in 2 working days |
Can't see your brand? Ask for an offer – we reply within 24 h.
Other versions of 638
The same size in another design – open, shielded, tapered bore.
How manufacturers designate 638-2Z
Each brand uses its own seal and design codes. The designations below describe the same bearing.
| Manufacturer | Designation | Sealing / design |
|---|---|---|
| SKF | 638/4-ZZ | 2Z – metal shields, both sides |
| ZEN | 638-2Z | 2Z – metal shields, both sides |
| NSK | 638-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 638-2Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.
Questions about 638-2Z
What are the dimensions of bearing 638-2Z?
Bore 8 mm, outside diameter 28 mm, width 9 mm. Standardised dimensions – the same for every manufacturer.
Are 638-2Z bearings from different brands interchangeable?
Yes. 638/4-ZZ SKF, 638-2Z ZEN, 638-ZZ1MC3 NSK are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.
How much does bearing 638-2Z cost?
At Castomer from PLN 3.57 to PLN 23.06 net per piece depending on the manufacturer (SKF, ZEN, NSK). Prices are updated from supplier warehouses; larger quantities get an individual offer.
What is the delivery time for 638-2Z?
Dispatch in 2 working days from supplier warehouses in the EU. Availability is confirmed in the reply to your enquiry.
