NSK 684 AZZ1 deep groove ball bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding NSK 684 AZZ1
- 68Series
- Deep groove ball bearings, 68 series. Series differ in outside diameter and width even when the bore is the same.
- 4Bore
- Bore: 4 mm.
- AZZ1Suffix
- NSK suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
684 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NSK 684 AZZ1 belongs to deep groove ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 684 AZZ1 and any equivalents.
Deep groove ball bearings are a workhorse design that handles radial and axial loads in either direction and runs well at speed. The NSK AZZ line covers compact sizes with metal shields on both sides, which keeps particles out and friction low. You will find them in electric motors, fans, pumps, portable tools and precision machinery. MR Industrial Accessories quotes the exact part number you send.
Reading the AZZ code: the leading digits give the size, while AZZ tells you the bearing has two metal shields (ZZ) and a riveted steel cage (A). Examples in the 68 series include 684 AZZ1, 686 AZZ1 and 688 AZZ1, all small in outside diameter. The trailing 1 can denote a cage or tolerance variant. Check each part number against this breakdown.
Typical applications are low-power electric motors, fans, centrifugal pumps, power tools, precision instruments and medical equipment. They also appear in automotive, home appliance, textile and automation machinery. Their compact size suits tight spaces where speed is high and noise must stay low.
When choosing a bearing, consider radial and axial load, rotation speed and the operating environment. The AZZ metal shield blocks dust and moderate moisture but is not made for immersion. Confirm shaft and housing alignment, use quality grease, and fit the bearing correctly to avoid deformation and extend service life.
NSK AZZ bearings interchange with other brands that use the same international nomenclature. If you have a part number from another maker, we can identify the equivalent. Always confirm the critical dimensions: bore, outside diameter and width. Interchange is not always direct, so send the original number and we will advise.
To get a quote, message the complete part number on WhatsApp. MR Industrial Accessories responds promptly and can suggest equivalents or help you choose. If the exact variant is not listed, write to us with the model and we will assist in sourcing it.
Dimensions
- Bore
- 4 mm
Frequently asked questions
- What does the AZZ suffix mean on an NSK bearing?
- It shows the bearing has two metal shields (ZZ) and a riveted steel cage (A). This keeps particles out and lowers friction, but it is not for immersion.
- Where are AZZ series deep groove ball bearings used?
- They suit electric motors, fans, pumps, portable tools and precision equipment. They are common in home appliances, automotive and industrial machinery where speed is high and noise must be low.
- How do I request a quote for an NSK AZZ bearing?
- Send the complete part number, such as 684 AZZ1, by WhatsApp. We will quote promptly. If you have another brand's number, we can also help find the equivalent.