1. Also available in 52100 Chrome Steel
  2. ABEC Grades 1, 3, 5, 7, and 9 are available. Also, the equivalent ISO classes.
  3. Two metal shields = (ZZ), also available with a single metal shield = (Z).


Product parameters

Part Number 623ZZ
System of Measurement Metric
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Inner Ring Type Standard
Seal Type Shielded
Bore Dia (d) 3 mm
Bore Dia Tolerance -0.008mm to 0
Outer Dia (D) 10 mm
Outer Dia Tolerance -0.008mm to 0
Width (B) 4 mm
Width Tolerance -0.12mm to 0
Radius (min) (rs) 0.15mm
Ring Material 52100 Chrome Steel
Ball Material 52100 Chrome Steel
Cage Material 300 Series Stainless Steel
Shield Material 300 Series Stainless Steel
Dynamic Radial Load (Cr) 120.6 lbf
Static Radial Load (Cor) 39.375 lbf
Max Speed (X1000 rpm) (Grease) 50
Max Speed (X1000 rpm) (Oil) 60
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range -30° to 110 °C
ABEC Rating ABEC1 (Available in ABEC3/5/7)
Radial Clearance Trade No. MC3 (Available in MC1/2/4/5/6)
Radial Clearance 0.002mm to 0.013mm
Ball Dia (Dw) 1.5880 mm
Ball Qty 7
Max. Shaft Shoulder Dia. Inner (Li) 5mm
Min. Housing Shoulder Dia., Outer (Lo) 7mm
Weight 1.65 g
RoHS Compliant
REACH Compliant

All information in this catalog has been thoroughly checked for accuracy. However, the catalog data should not be relied upon entirely for design and development purposes. NPBearings assumes no liability for possible errors or omissions. All dimensions and specifications are subject to change without notice. Contact NPBearings for the most current catalog data as it applies to you and for your application.

623ZZ Miniature Ball Bearing - Spec

623ZZ Metric Size Miniature Ball Bearings have deep groove geometry for high speeds and supporting both radial and axial loads. These 623ZZ Metric Size Miniature Ball Bearings are for use in applications that involve combined radial and axial loads and a need for high running accuracy at high rotational speeds. For instance, 623ZZ is often used in motors, ATMs as well as Card Readers. In Food & Beverage Industry, 623ZZ is also popular. More applications about 623ZZ are as follows.

Typical applications include:
Motors, Flow Meters, Medical Instruments, Vacuum Pumps, Robotics Industry,Crossbow, Food & Beverage Industry, Automation & Industry, Anemometer, ATMs & Card Readers, Galvanometers, Gas Meters, Industrial Encoders, Industrial Meters, Optical Encoders, Plastic Card Printers, Surveillance Systems, Fuel controls, Gyros, synchros and servos, Cryogenic coolers, Pulmonary assist devices, Clocks, Instrumentation, Drones and model, Fishing reel.

General Selection Factors:
Several factors must be considered for choosing miniature ball bearings. These factors include the ring material, design, shields and seals, cage, Annual Bearing Engineering Committee (ABEC) grade, radial play, and lubricant. Miniature bearings are available in open, sealed and shielded configurations. Seals and shields are used in miniature bearings (specifically ball bearings) to retain lubricants and prevent particulate contamination from reaching critical surfaces. Seals are used where minimal light contact is offered. Seals for miniature bearings provide deterrence to particulate contamination, but increase torque and limit operating speeds. Shields are used in most applications.

Additional information

Additional information


2", 6"