01 Overview

623ZZ Miniature & Instrument Series, Chrome Steel Ball Bearing

Model: 623ZZ
  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).

02 Photo Gallery

03 Product Description

623ZZ Miniature Ball Bearings in Metric have deep groove geometry for high speeds and supporting both radial and axial loads. The 623zz Metric 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.

General Selection 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.

Simplify Specifications

Nominal shaft diameter 6
Nylon cage
Standard type LM6UU
Number of steel ball rows 4
Weight (g) 7.6
Gap adjustment type LM6UU-AJ
Number of steel ball rows 4
Weight (g) 7.5
Open type
Number of steel ball rows
Weight (g)
Main dimensions and tolerances
Width Tolerance -0.12mm to 0
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 (Grease) 50 x 1000 rpm
Max Speed (Oil) 60 x 1000 rpm
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 1.5880 mm
Ball Qty 7
Weight 1.65g
RoHS Compliant
REACH Compliant


Typical Applications

  • 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, Servos, Cryogenic Coolers, Pulmonary Assist Devices
  • Clocks, Instrumentation, Drones and model, Fishing Reels


Packing Solutions

  • By Industry Packing + Export Carton + Pallet/Wooden Box
  • Commercial Individual Packing – VCI bag + Paper Box (White or OEM colorful) + Export carton + Pallet/Wooden Box


Delivery Solutions

  • By Sea for mass cargo (GW > 300KGS)
  • By Air (GW between 100KGS – 300 KGS)
  • By Express, such as DHL, TNT, Fedex and UPS for small cargo ( GW < 100KGS)


Advantages of Working with NPBearings.com Company

  • Buying at a profit. Direct manufacturer always offer you products with lowest prices
  • Fast shipping. Industrial cluster advantages make our material purchase and producing efficiently. Truck and rail logistics enable us to deliver goods to the port as fast as possible
  • Quality guarantee — guarantee 100% full quality inspection before delivery
  • Small order accept
  • Service offered


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04 Technical Information

  1. Radial Ball Bearings

    Bus & Train Doors
    Car Maintenance Stands
    Custom Transportation
    Platforms & Conveyor
    Production Rail Saws
    Quality Assurance
    Rail Equipment
    Track Panel Lifters
    Transportation Assembly

    Assembly & Maintenance Platform
    Interfaces & Infrastructures
    Test & Simulation

    Tire Manufacturing
    Balance & Force
    Bead Assembling
    Profile Inspection
    Roll Lathes & Grinders
    Strip Builders
    Strip Wrappers
    Tire Tread
    Tread & Sidewall Extruders

    Coating & Packaging
    Inking & De-inking
    Paper Mill
    Paper Reel Section
    Papermaking Machinery
    Pulp Processing
    Reeling & Winding

    Factory Automation
    Automatic Warehouses
    Dispensing Automation
    Feeder Technology
    Industrial Systems
    Inspection & Test Systems
    Laser Processing
    Measuring & Supervision
    Packaging, Palletizing & Dispensing
    Pressing, Cutting and Gluing
    Printing & Scanning
    Robots & Manipulators
    Safety Platforms
    Welding, Soldering & Drilling

    Machine Tools
    Loading & Unloading
    Tool Exchange

    Aircraft Wing Handling
    Hardening & Melting
    Laser Cutting
    Metal Form

    Agricultural & Forestry Machines
    Plywood Manufacturing Applications
    Processing Machines & Vehicles
    Timber Production Machinery
    Removal Machines
    Wood Chipping

    Aerospace & Defense
    Aircraft Assembly Platforms
    Aircraft Maintenance
    Aircraft Wing Handling
    Antenna Elevation
    Ground Vehicles & See Systems
    Gun Sights & Systems
    Missiles & Precision Guided Munitions
    Seat Adjustment Systems
    Security Cameras
    Thrust Reverser

    Material Handling
    Aerospace & Defense
    Aircraft Assembly Platforms
    Antenna Elevation
    Assembly Line Engine Handling
    Car Chassis Transportation
    Food Container Palletizing
    Ground Vehicles & Sea Systems
    Missiles & Precision Guided Munitions
    Trucks & Mobile Lifting Aids
    Vertical Lift Module & Automatic Storage

    Food Processing
    Food Press
    Food Vending Machine
    Skewer & Assembly

    Assembly & Preparation
    Chemical Transfer
    Mixing & Blending
    Oxidation & Extraction
    Platform Lift Systems
    Temperature Control

    Automatic Teller (ATMs)
    Counting Systems
    High Voltage Circuit
    Key Manufacturing
    Limit Switches & Sensors
    Pet Tag Manufacturing

    Packaging Machinery
    Thermal Management
    Vacuum Systems

    Antenna Satellites
    Assembly & Preparation
    Chemical Transfer
    Mixing & Blending
    Oxidation & Extraction
    Platform Lift Actuator
    Radio Equipment
    Temperature Control

    Clean Energy
    Solar Energy
    Wind Energy

  2. Bearing Materials

    Bearing Materials

  3. Bearing Closures – Shields and Seals

    Bearing Closures – Shields and Seals

  4. Ball Bearing Cages, Retainers, and Ball Separators

    Ball Bearing Cages, Retainers, and Ball Separators

  5. Bearing Tolerances

    Bearing Tolerances

  6. Radial Play (Internal Clearance) in Ball Bearings

    Radial Play (Internal Clearance) in Ball Bearings

  7. Bearings Lubrication

    Bearings Lubrication

  8. Fitting and Mounting of Radial Ball Bearings

    Fitting and Mounting of Radial Ball Bearings

  9. Life and Load Ratings – Radial Ball Bearings

    Life and Load Ratings – Radial Ball Bearings

05 Related Product