{"product_id":"f623zz-flange-ball-bearings-3x10x4mm-3d-printer-guide-wheel","title":"F623ZZ Flange Ball Bearings 3×10×4mm | 3D Printer Guide Wheel","description":"\n\u003ch2\u003eF623ZZ Flange Bushing Ball Bearings – Precision Guide Wheels for 3D Printers\u003c\/h2\u003e\n\u003cp\u003eUpgrade your VORON, Delta, Rostock, Kossel Mini, or any compatible 3D printer with these high-quality \u003cstrong\u003eF623ZZ miniature flange deep groove ball bearings\u003c\/strong\u003e. Engineered from premium \u003cstrong\u003eGCR15 bearing steel\u003c\/strong\u003e with a deep groove structure, these bearings deliver smooth, consistent rotation as pulley guide wheels — keeping your printer's motion system running reliably print after print. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e F623ZZ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 3 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 10 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Miniature flange deep groove ball bearing (double shielded ZZ)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e GCR15 bearing steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructure:\u003c\/strong\u003e Deep groove, flange rim for easy axial positioning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGrade Levels Explained\u003c\/h3\u003e\n\u003ch4\u003eGeneral Level\u003c\/h4\u003e\n\u003cp\u003eMeets national standard baseline specs. Dimensional accuracy within ±0.05 mm; suitable for speeds under 500 RPM. Ideal for low-speed transmission equipment, castors, and toys.\u003c\/p\u003e\n\n\u003ch4\u003eMotor Level\u003c\/h4\u003e\n\u003cp\u003eMeets national standard P0\/Z2 grade and above. Dimensional accuracy within ±0.01 mm, smooth operation up to 6,000 RPM with low noise and long service life. Perfect for motors, electric tools, pneumatic tools, fitness equipment, and 3D printer motion systems.\u003c\/p\u003e\n\n\u003ch4\u003eHigh Quality Level\u003c\/h4\u003e\n\u003cp\u003eMeets national standard P6 grade and above. Dimensional accuracy within ±0.005 mm; handles speeds above 6,000 RPM with minimal noise. Suited for high-speed motors, precision instruments, and high-grade models.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 pcs — Option No. 1\u003c\/li\u003e\n  \u003cli\u003e6 pcs — Option No. 2\u003c\/li\u003e\n  \u003cli\u003e4 pcs — Option No. 3\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVORON 3D Printers\u003c\/li\u003e\n  \u003cli\u003eDelta \/ Rostock \/ Kossel Mini printers\u003c\/li\u003e\n  \u003cli\u003eAny build requiring F623ZZ 3×10×4 mm flanged pulley bearings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/t2-pure-bare-copper-wire-round-solid-uncoated-0-1-2mm-10m\"\u003eT2 Pure Bare Copper Wire 0.1–2mm Round Solid Uncoated 10M\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What 3D printer models are F623ZZ flange ball bearings compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: F623ZZ flange bearings are widely used in VORON, Delta, Rostock, and Kossel Mini 3D printers as pulley guide wheels. They fit any build requiring a 3 mm bore, 10 mm outer diameter, and 4 mm height bearing with a flange rim for axial alignment.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the \"ZZ\" designation mean in F623ZZ bearings?\u003c\/h4\u003e\n\u003cp\u003eA: The \"ZZ\" indicates the bearing is double-shielded with metal shields on both sides. This keeps lubricant in and dust or debris out, extending the bearing's service life — especially important in 3D printer environments where fine particulates are common.\u003c\/p\u003e\n\u003ch4\u003eQ: What material are these F623ZZ bearings made from?\u003c\/h4\u003e\n\u003cp\u003eA: These bearings are manufactured from GCR15 high-carbon chromium bearing steel, a standard industrial grade known for its hardness, wear resistance, and dimensional stability — ensuring accurate, long-lasting performance in precision motion applications.\u003c\/p\u003e\n\u003ch4\u003eQ: How many bearings will I receive per order?\u003c\/h4\u003e\n\u003cp\u003eA: The quantity depends on the option selected: Option No. 1 includes 10 pcs, Option No. 2 includes 6 pcs, and Option No. 3 includes 4 pcs of F623ZZ flange ball bearings.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What 3D printer models are F623ZZ flange ball bearings compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"F623ZZ flange bearings are widely used in VORON, Delta, Rostock, and Kossel Mini 3D printers as pulley guide wheels. 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