Used NAGASE RG500 Rotary Surface Grinder




Product Description
This pre-owned NAGASE RG500 rotary table surface grinder from Japan is designed for ultra-precision mirror finish grinding. Equipped with FANUC CNC control, hydrostatic bearing structure, a Ø500 mm permanent magnetic chuck, and 0.1 μm minimum setting unit, it is suitable for high-accuracy flat grinding, step grinding, and mirror surface machining. Inspection photos show a clean mirror finish and flatness checking around 0.5 μm, making it a strong choice for precision mold, die, semiconductor tooling, and high-end component machining.
Technical Specifications
| Item | Specification |
|---|---|
| Machine Condition | Used / Pre-owned |
| Brand | NAGASE |
| Model | RG500 |
| Machine Type | CNC Rotary Table Surface Grinder / Mirror Surface Grinder |
| Country of Origin | Japan |
| CNC System | FANUC / FANUC Oi-D listed |
| Chuck Size | Ø500 mm permanent magnetic chuck |
| Y-Axis Travel | 250 mm |
| Z-Axis Travel | 380 mm |
| Left-Right Travel | 400 mm |
| Vertical Up-Down Travel | 350 mm |
| Table / Guideway Structure | Hydrostatic bearing guide surface |
| Left-Right Axis | Hydrostatic bearing |
| Rotary Table Axis | Hydrostatic bearing |
| Drive Method | AC servo motor + hydrostatic bearing |
| Table Speed | 2–200 rpm |
| Rapid Feed Speed | 1000 mm/min |
| Minimum Setting Unit | 0.1 μm |
| Control Method | Closed-loop control |
| Control Resolution | 0.0001 / 0.001 / 0.01 |
| Grinding Wheel Size | Ø355 / Ø305 × T38 × Ø127 mm, as listed |
| Max Spindle Speed | 1800 rpm |
| Main Spindle Motor | 11 kW, 4-pole |
| Worktable Drive Motor | 5.5 kW |
| Vertical Feed Motor | 1.4 kW, FANUC α4/4000 |
| Servo Motor | 0.75 kW, FANUC α2/5000 |
| Pump Motors | 1.2–2.2 kW |
| Coolant Filter Motor | 1.2–2.2 kW |
| Coolant Pump | 1.875 kW |
| Magnetic Separator | 25 kg |
| CNC Control | Simultaneous 2-axis CNC control |
| Operation Panel | LCD & MDI panel |
| PMC | Built-in PMC |
| Tool Compensation | 32 groups |
| Program Storage | 125 programs |
| Macro Function | Custom Macro B supported |
| Program Memory | 320 m, paper tape length conversion |
| Interface | RS-232C |
| Special Control Function | Table rotary axis synchronous control by left-right movement |
| Special Feed Function | Left-right axis feed control by table rotation |
| Included Auxiliary Units | Bag filter pump, circulation pump, liquid filter pump, suction unit, dressing motor |
Applications & Suitable Machining Scenarios
The used NAGASE RG500 CNC rotary surface grinder is suitable for factories that need micron-level surface accuracy and mirror finish results without investing in a new Japanese precision grinder.
It can be used for:
- Precision mold plates and die components
- Mirror surface grinding of circular or flat workpieces
- Step grinding and staged surface grinding
- Semiconductor tooling and precision fixtures
- Bearing parts, sealing rings, gauge parts, and high-accuracy mechanical components
- Hardened steel, carbide, and other precision materials depending on wheel and process setup
This machine is especially useful for manufacturers looking for a Japanese used precision surface grinder with hydrostatic stability, FANUC control, and proven mirror grinding performance.
FAQ
Is this NAGASE RG500 a new machine or a used machine?
This is a used NAGASE RG500 CNC rotary surface grinder from Japan. The NAGASE brand name is used only to identify the original machine manufacturer.
Can this used NAGASE RG500 make a mirror finish surface?
Yes, this machine is designed for mirror finish grinding. The inspection photos show a clear reflective surface, and flatness checking is shown around 0.5 μm. Final results depend on wheel selection, material, dressing, and operator setup.
What control system does this RG500 grinder use?
The machine is equipped with a FANUC CNC control system, with FANUC Oi-D listed in the specification and a FANUC operation panel shown in the machine photos.
Why is this machine suitable for high-precision grinding?
The RG500 uses hydrostatic bearing construction, closed-loop control, 0.1 μm minimum setting unit, and a Ø500 mm magnetic chuck. These features help support stable micron-level grinding.
Can we inspect or test this machine before buying?
Yes. The machine is available for inspection, and buyers can request machine photos, working videos, accuracy checking details, and test grinding information before purchase.
$976471.00
Brand
Nagase
Model
RG500
Origin
JP
Processing Time
5412h
Machine Status
- In stock
- Company-owned inventory
- Delivery time: 7 days
Available inspection support
- Machine appearance check
- Control system power-on check
- Spindle and axis movement check
- Grinding area photo check
- Electrical cabinet photo check
- Machine nameplate verification
- Remote video inspection
- Optional third-party inspection
Supplier's customization ability
- Minor customization
- Drawing-based customization
- Sample-based customization
- Full customization




