ZEN 686 ZZ W4.5 Ball Bearing 6x13x4.5mm

ZEN 686 ZZ W4.5 6x13x4.5mm Deep Groove Ball Bearing

The ZEN 686 ZZ W4.5 6x13x4.5mm is a premium miniature deep groove ball bearing featuring double shielding (ZZ). Designed for demanding G‑speed applications, it combines compact size with high durability and precise operation. Popular search terms include “686 ZZ W4.5 deep groove ball bearing”, “6x13x4.5 miniature ZZ bearing” and “shielded deep groove ball bearing 686”.

Technical Data

• Inner Diameter (d): 6 mm

• Outer Diameter (D): 13 mm

• Width (B): 4.5 mm - standard for W4.5 series

• Shield Type: Double metal shields (ZZ) provide reliable contamination protection and factory grease filling

• Material: High-grade bearing steel (chrome alloy) with excellent wear and fatigue resistance

• Weight: Approx. 3 g

• Precision & Performance: Suitable for very high rotational speeds with minimal noise and friction

Applications
Ideal for miniature machinery and compact mechanisms:

• Electronics & robotics controllers

• Precision motors, 3D printers, small pumps

• Instrumentation, drones, model engineering

• Low-torque, high‑speed rotating systems

Advantages & Key Benefits

• Ultra-compact size (6x13x4.5mm) fits tight assemblies

• Double shielding (ZZ) ensures long‑term lubrication and low maintenance

• Low noise and minimal friction make it perfect for high‑speed sensitive designs

• High durability with standard chrome‑steel materials

• Versatile compatibility across multiple small-scale applications

FAQ - Frequently Asked Questions

Q1. What does “ZZ W4.5” mean?
A: “ZZ” indicates metal shields on both sides, “W4.5” refers to a width of 4.5 mm.

Q2. Is the bearing pre-greased?
A: Yes - factory-sealed (ZZ) and pre-lubricated for immediate use.

Q3. Can it support axial loads?
A: Yes - deep groove design handles both radial and axial loads in moderate applications.

Q4. What speed range is it suitable for?
A: Excellent for high RPM use - minimal drag and exceptional smoothness.

Q5. Are there stainless steel versions available?
A: Yes - versions labeled “S686-ZZ-W4.5” denote stainless steel construction for corrosion resistance.