
RMO 623ZZ Chrome Steel V-Groove Bearing for 3D Printers & Wire Guides
| Item No : | 623ZZ V-Groove / 623-2Z V Pulley |
| Size (d*D*B) : | 3x12x4mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.002KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
Searching for a reliable linear motion or wire-guiding solution on a 3mm shaft? The 623ZZ V-Groove Bearing Pulley (3x12x4mm) is uniquely designed with a precision V-shaped outer profile, acting as both a high-speed ball bearing and a guide track roller. Forged from high-hardness Chrome Steel (GCr15/52100), this bearing delivers exceptional wear resistance compared to standard carbon steel pulleys, ensuring smooth, vibration-free tracking for wires, ropes, or rails. As a specialized B2B bearing trader, we supply highly profitable bulk orders of our field-tested RMO brand, or source premium international OEM brands to meet your specific automation needs.

⚙️Product Features:
- Precision V-Groove Outer Ring: Centers and guides moving wires, cables, or angular aluminum tracks perfectly, preventing derailment or lateral slippage.
- Premium Bearing Steel (Chrome Steel): Constructed from 52100/GCr15 chrome steel, providing superior load capacity and long-lasting wear resistance under continuous rolling friction.
- Compact 3x12x4mm Dimensions: Incorporates a standard 3mm micro-bore with an expanded 12mm grooved outer diameter, optimizing space in miniaturized equipment.
- ZZ Metal Shields: Dual steel shields keep industrial dust, metal shavings, and debris out of the raceway while locking in high-performance grease.
- Flexible B2B Sourcing: Optimize your hardware distribution margins with RMO brand pulleys, or tap into our global network for specialized OEM components.
⚙️Product Application:
- 3D Printers and CNC laser engravers (V-slot aluminum extrusion wheels and filament guides).
- Wire straightening machines, cable drawing equipment, and wire stripping tools.
- Miniature sliding doors, track window mechanisms, and custom drawer runners.
- Automated winding machines and textile spinning guides.
- Global 3D printer parts distributors, CNC hardware wholesalers, and automation OEMs.
⚙️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. |
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⚙️Obtain Certificate:
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⚙️Technical Parameters:
| Model No. | |
| Bearing Type | |
| Size | 3x12x4mm |
| Outer Profile | V-Groove for Wire / Track Guide |
| Material | |
| Shielding Type | Dual Steel Shields ZZ |
| Dynamic Load (Cr) | |
| Static Load (Cor) | |
| Max RPM | ~ 35,000 RPM (Grease) |
| Package | |
| Lead Time | |
| Shipping | |
| Payment | 100% TT, or 30% TT In Advance, 70% TT After Finished Production |
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