623ZZ 3x10x4mm High-Speed Ball Bearing for 3D Printer Extruders and Cooling Fans
| Item No : | 623ZZ / 623-2RS |
| Size (d*D*B) : | 3x10x4 mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.002 KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
The 623 series (3x10x4mm) is one of the most versatile and highly demanded miniature deep groove ball bearings on the market. Unlike thrust bearings, this radial-focused bearing handles high-speed rotations with low friction. It is available in two distinct closure types: the 623ZZ features dual metal shields for maximum RPM and dust protection, while the 623-2RS uses dual rubber seals to block out moisture and fine contaminants. Pre-lubricated with premium grease for maintenance-free operation, we supply these reliable micro bearings under our stringent RMO brand standards, alongside flexible multi-brand OEM procurement for global manufacturers.
⚙️Product Features:
- ZZ vs. 2RS Customization: Choose the 623ZZ (metal shields) for ultra-high-speed, low-friction operations, or the 623-2RS (contact rubber seals) for harsher environments requiring water and dirt resistance.
- Optimized Radial & Light Axial Load: The deep groove raceway design enables the bearing to support both radial forces and light axial loads simultaneously during rapid rotation.
- Premium GCr15 Chrome Steel: Manufactured from high-carbon chromium steel, ensuring superior hardness, wear resistance, and a significantly extended operational lifespan.
- Pre-Lubricated & Maintenance-Free: Factory-filled with precise amounts of wide-temperature range grease, eliminating the need for manual lubrication and reducing operational noise.
⚙️Product Application:
Renowned for its compact 3x10x4mm size and high-speed stability, the 623ZZ / 623-2RS is an industry standard for:
- 3D printer extruders, filament guide pulleys, and CNC stepper motors.
- PC cooling fans, micro exhaust blowers, and small DC motors.
- RC model cars (steering blocks), RC helicopters, and mini drone components.
- Precision medical diagnostic instruments, dental tools, and smart home appliances.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
 |  |  |  |  |
⚙️Obtain Certificate:
About Rimao
Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!
⚙️Technical Parameters:
| Model No. | 623ZZ / 623-2RS |
| Bearing Type | Miniature Deep Groove Ball Bearing |
| Exact Dimensions | 3x10x4 mm (Inner d x Outer Dia D x Total Width/Height H) |
| Closure Type | ZZ (Dual Steel Shields) / 2RS (Dual Rubber Seals) |
| Bearing Material | Premium Chrome Steel GCr15 |
| Lubrication | Pre-greased (Factory Filled) |
| Load Type | Radial & Light Axial |
| Precision Rating | P0 / P6 ( ABEC-1 / ABEC-3) Optional |
| Target Application | 3D Printers, Cooling Fans, Small Motors |
| Lead Time | 3-5 days for stock; 7-15 days for bulk orders |
| Brand | RMO (Own Brand) / Neutral / OEM Custom / Other Global Brands |
| Shipping | |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |
leave a message
If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.
You may also like
