Deep groove ball bearing 6904-2Z – 20×37×9 mm
7 offers · 4 manufacturers · net prices from PLN 21.88 · dispatch in 2 working days
6904-2Z is a deep groove ball bearing with a 20 mm bore, 37 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
- 20 mm
- outside D
- 37 mm
- width B
- 9 mm
- sealing
- 2Z
- mass
- 0.04 kg
- net price from
- PLN 21.88
Brands and prices 6904-2Z
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 | 6904 ZZECMEC design, machined brass cage (SKF) | CN | PLN 21.88PLN 26.91 gross | supplier stockdispatch in 2 working days | |
| KOYO | 6904 ZZ | CN | PLN 28.78PLN 35.40 gross | supplier stockdispatch in 2 working days | |
| NSK | 6904-ZZ | CN | PLN 30.99PLN 38.12 gross | supplier stockdispatch in 2 working days | |
| NSK | 6904-ZZC3 | C3 | PLN 30.99PLN 38.12 gross | supplier stockdispatch in 2 working days | |
| NTN | 6904-ZZ5K | CN | PLN 32.12PLN 39.51 gross | supplier stockdispatch in 2 working days | |
| NTN | 6904-ZZC35K | C3 | PLN 32.12PLN 39.51 gross | supplier stockdispatch in 2 working days | |
| NSK | 6904-ZZNR | CN | PLN 40.93PLN 50.34 gross | supplier stockdispatch in 2 working days |
Can't see your brand? Ask for an offer – we reply within 24 h.
Other versions of 6904
The same size in another design – open, shielded, tapered bore.
How manufacturers designate 6904-2Z
Each brand uses its own seal and design codes. The designations below describe the same bearing.
| Manufacturer | Designation | Sealing / design |
|---|---|---|
| NSK | 6904-ZZ | 2Z – metal shields, both sides |
| NTN | 6904-ZZ5K | 2Z – metal shields, both sides |
| NACHI | 6904 ZZECM | 2Z – metal shields, both sides |
| KOYO | 6904 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 6904-2Z are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.
Questions about 6904-2Z
What are the dimensions of bearing 6904-2Z?
Bore 20 mm, outside diameter 37 mm, width 9 mm. Standardised dimensions – the same for every manufacturer.
Are 6904-2Z bearings from different brands interchangeable?
Yes. 6904-ZZ NSK, 6904-ZZ5K NTN, 6904 ZZECM NACHI, 6904 ZZ KOYO are the same bearing under different manufacturers' designations. Match the clearance (e.g. C3) and the sealing.
How much does bearing 6904-2Z cost?
At Castomer from PLN 21.88 to PLN 40.93 net per piece depending on the manufacturer (NSK, NTN, NACHI, KOYO). Prices are updated from supplier warehouses; larger quantities get an individual offer.
What is the delivery time for 6904-2Z?
Dispatch in 2 working days from supplier warehouses in the EU. Availability is confirmed in the reply to your enquiry.
