Metal Radial Ball Bearings 608ZZ 623ZZ 624ZZ 625ZZ 3D Printer
Metal Radial Ball Bearings 608ZZ 623ZZ 624ZZ 625ZZ 3D Printer
Precision Metal Radial Ball Bearings for 3D Printers & More
Upgrade your 3D printer, small motor, or mechanical project with these high-quality metal radial ball bearings. Available in a range of standard sizes — 608ZZ, 623ZZ, 624ZZ, 625ZZ, 626ZZ, 688ZZ, and F688ZZ — these bearings deliver smooth, low-friction rotation and long-lasting durability in a compact silver metal design. No assembly required; just drop them in and get moving.
Made in Mainland China.
Key Features
- Material: High-quality metal construction for strength and longevity
- Color: Silver
- Double-shielded (ZZ): Shields on both sides keep out dust and debris for reliable performance
- No assembly required: Ready to install straight out of the packaging
- Wide compatibility: Suitable for 3D printers (RepRap and similar), small motors, conveyor systems, and household applications
- No high-concern chemicals: Safe materials for everyday use
Size Specifications (Inner Diameter × Outer Diameter × Thickness)
- 608ZZ: 8 × 22 × 7 mm
- 623ZZ: 3 × 10 × 4 mm
- 624ZZ: 4 × 13 × 5 mm
- 625ZZ: 5 × 16 × 5 mm
- 626ZZ: 6 × 19 × 6 mm
- 688ZZ: 8 × 16 × 4 mm
- F688ZZ: 8 × 16 × 5 mm (flanged)
What's in the Box
- 1 × Metal Radial Ball Bearing (your selected size)
Applications
These versatile bearings are ideal for:
- 3D printers (RepRap, Prusa, Ender, and compatible builds)
- Small electric motors and robotics
- Conveyor and mechanical assemblies
- DIY and hobby projects
- Household appliance repairs
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Frequently Asked Questions
Q: What bearing sizes are available for these metal radial ball bearings?
A: These metal radial ball bearings are available in seven standard sizes: 608ZZ (8×22×7 mm), 623ZZ (3×10×4 mm), 624ZZ (4×13×5 mm), 625ZZ (5×16×5 mm), 626ZZ (6×19×6 mm), 688ZZ (8×16×4 mm), and F688ZZ (8×16×5 mm, flanged). Select the size that matches your application during checkout.
Q: Are these ball bearings compatible with RepRap 3D printers?
A: Yes! These metal radial ball bearings are specifically suitable for RepRap-style 3D printers and many other popular FDM printer builds. The 608ZZ size in particular is one of the most commonly used bearings in 3D printer motion systems.
Q: What does the "ZZ" designation mean on these bearings?
A: The "ZZ" designation indicates that the bearing features double metal shields on both sides. These shields protect the internal ball and race components from dust, debris, and light moisture ingress, helping the bearing maintain smooth, consistent rotation over time without requiring frequent re-lubrication.
Q: Can these bearings be used in applications other than 3D printers?
A: Absolutely. These versatile metal radial ball bearings are well-suited for small electric motors, robotics, conveyor systems, DIY hobby projects, and household appliance repairs — any application requiring a standard miniature radial ball bearing in the listed sizes.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.