Metallographic Grinding & Polishing Machine PC-20S

Metallographic Grinding & Polishing Machine PC-20S

Compact and stable single‑disk metallographic polisher with touch control, stepless speed, 8 fixed speeds, and quick‑change conical disc system for efficient sample preparation.

The Metallographic Grinding & Polishing Machine PC-20S is a high‑efficiency single‑disk grinding and polishing machine designed for metallographic sample preparation. It features a durable engineering plastic body, smooth surface, and easy scratch repair. The conical disc system allows fast disc replacement and cleaning, while a large‑diameter drain prevents clogging. With stepless speed regulation and 8 customizable fixed speeds, users can quickly switch between grinding and polishing. Stable rotation, low noise, and adjustable water flow ensure consistent, high‑quality surface preparation for various materials.

2. Key Selling Points

  1. Integrated environmental engineering plastic body, smooth, scratch‑resistant and easy to clean.
  2. Conical disc system for fast disc replacement and simple maintenance.
  3. Large‑diameter drain pipe to avoid blockage.
  4. Stable rotation, low vibration and low noise during operation.
  5. Stepless speed regulation for precise speed control.
  6. 8 customizable fixed speeds for quick access to common working speeds.
  7. One‑touch switching between grinding and polishing modes.
  8. Adjustable water flow for optimal grinding and polishing conditions.
  9. Touch control panel for easy parameter setting.
  10. Compact structure, space‑saving and suitable for laboratory use.

3. Technical Parameters

Item Specification
Working disc diameter 200mm (standard) / 230mm / 250mm
Speed range 50–1000 r/min (constant speed & constant torque)
8 fixed speeds S1=50, S2=200, S3=300, S4=400, S5=500, S6=600, S7=800, S8=1000 r/min (customizable)
Rotation direction Clockwise / Counterclockwise adjustable
Motor power 1000W
Voltage / Frequency AC220V 50Hz
Water pressure 1–10 bar / 0.1–1 MPa
Inlet pipe Φ8 mm, length 2 m
Drain pipe Inner diameter Φ40 mm
Operation panel Touch control + buttons
Operating temperature 5–40 °C
Operating humidity 0–95% RH
Dimensions (L×W×H) 720×685×320 mm
Weight 50 Kg

4. Applicable Materials

Steel, stainless steel, cast iron, aluminum alloy, copper alloy, titanium alloy, cemented carbide, weldments, castings, forgings, composites, ceramics, coatings, electronic materials, PCB, thin films and other metallographic samples.

5. Standard Configuration

No. Configuration Content
1 1 set of PC-20S main machine
2 1 piece of working disc (200mm)
3 1 set of touch control panel
4 1 set of conical disc system
5 1 set of water supply & drainage system
6 1 set of splash guard
7 1 set of power cable

6. Optional Accessories

  • Metallographic abrasive papers (various grits)
  • Polishing cloths (flannel, nylon, suede, silk, damping cloth, synthetic cloth, etc.)
  • Diamond spray, suspension, polishing paste
  • Alumina / silica polishing solution
  • Magnetic support disc & adhesive disc
  • Sample holders and clamps
  • Water cooling unit

7. Application Cases

  • Metallographic sample preparation for automotive parts, gears, bearings, fasteners
  • Aerospace alloy grinding and polishing
  • Welded parts and heat‑treated sample analysis
  • PCB, electronic components and connector sample preparation
  • Quality control and material research in factories, labs and research institutions
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