684 ZZ Shielded Ball Bearing R940 ZZ

This 684 ZZ bearing has an inner diameter of 4, an outer diameter of 9, and a height of 4. These shielded miniature ball bearings feature deep groove geometry for high speeds and support radial and axial loads.

Deep groove ball bearings are used for high and very high speeds and require little maintenance. They are designed so that balls roll between inner and outer raceways.

These shielded deep groove ball bearings are suitable for applications involving combined radial and axial loads and high running accuracy at high speeds. The shield protects the working parts of the bearing from possible introduction of environmental debris that may reduce the speed and service life of the ball bearing. Such applications include clutches, drives, gearboxes, compressors, pumps, turbines, and printing and textile machinery, among others.

● Small diameter sizes are available

● Suitable for high speed rotation

● Bearings with retaining rings are available

Click here and download the data sheet of 6001 2RS deep groove ball bearings or contact us and get more detailed information.

For any inquiries, please contact with our Supporting Team at sales@yuanhecd.com.

Part Number 684 ZZ

Deep groove ball bearing drawing
Spec 684 ZZ
Item Miniature Ball Bearings
Type Shielded
Bore Dia (d). 4 mm
Outside Dia (D). 9 mm
Width (B) 4 mm
ABEC Tolerance 3
Dynamic Load Capacity (kN) 0.15kN
Static Load Capacity (kN) 0.224kN
Max. RPM 57,000RPM
Temp. Range (℃) -40~120℃
Material Steel
Shield Material (SPCC)
Mild steel ( SPCC)
Lubrication Grease

The 684 ZZ shielded ball bearing is ideal for high speed applications. Made of durable bearing steel, the bearings are shielded on both sides to keep contaminants out and reduce friction. Additionally, the deep grooved raceways make them ideal for high-speed use.

Miniature ball bearings 684 ZZ are small and suitable for installation in confined spaces and on thin shafts. It can withstand very high speeds. Main dimensions according to DIN 625-1.

If you have any questions or concerns about our products, please feel free to let us know, or contact me if you have any custom requests!

Other types of ball bearings are also available: 6003 ZZ, 6004 2RS, 6004 ZZ. If you’re interested in our procucts, please feel free to contact us.

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Contact us if you are thinking of purchasing high quality bearings, develop new products, or want to find a reliable bearing manufacturer.

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