Metal polishing machine Rana-30

for metallographic samplesindustrialgrinding

Product overview
A powerful automatic grinding and polishing machine featuring a double start-button safety system. Rana-30 stores up to 16 polishing programs and supports ABC step settings (three-stage polishing sequence), enabling efficient and repeatable specimen preparation.

Main specifications

• General: Desktop polishing machine using a total load system. Polishing area driven by a 750W servo motor; specimen rotation driven by a 120W brushless motor. High torque with disc rotation up to 400 rpm and maximum applied pressure of 400 N.
• Disc capacity: Accepts grinding discs up to Ø310 mm as a desktop unit.
• Safety: Double start-button arrangement (left and right head buttons must be pressed simultaneously) to prevent accidents such as entanglement.
• Optional accessories: Examples include leveling machine specimen holder (holder sold separately).
• Polishing without losing parallelism: Recommended method: rotate holder and disc at same speed and direction. Rana-30 allows independent holder speed adjustment and reversing disc/holder rotation for flexible workflows (including left-handed polishing).
• Suggested settings — grinding / fine polishing: Grinding: SiC paper or polishing pad — Disc 200 rpm / Holder 200 rpm. Fine polishing: diamond + polishing cloth — Disc 65–150 rpm / Holder 65–150 rpm.
• Automatic pressure control: Programmable pressure ramping (increase/reduce over set seconds) during operation.
• Two-step polishing changes: Two different movements can be programmed within a single polishing process (e.g., start at low pressure/speed then increase for fragile or edged materials).
• Memory: Stores up to 16 polishing conditions for rapid recall when preparing multiple specimens.

Machine specifications
Power supply: 3-phase 200–220 V, 50/60 Hz
Dimensions / Weight: W600 × D745 (to drainage opening) × H675 mm / 105 kg

Polishing area
Disc size: Grinding disc: Ø250 mm, Ø305 mm; Polishing disc: Ø250 mm, Ø300 mm; Magnetic disc: Ø250 mm, Ø300 mm (discs sold separately)
Disc rotation speed: 50–400 rpm (forward/reverse switchable)
Motor output: 750W servo motor
Operation: Waterproof touch panel with emergency stop; automatic polishing start via left/right head buttons; storage for up to 16 polishing conditions; ABC setting (3 configurable steps)

Specimen rotation area
Holder rotation: 50–200 rpm (forward/reverse switchable)
Motor output: AC 120W brushless motor
Specimen holder: Standard Ø165 mm (optional up to Ø200 mm). Tear-drop type: Ø10–40 mm × 6 specimens; Rectangular hole: ×3. Custom sizes available (holder sold separately)
Applied pressure: 50–400 N
Lubricator: Auto drip function (interval and amount adjustable)
Primary air source: Required 0.5–0.7 MPa (separate regulator required for sources above 0.7 MPa).

Movie
Promotional/demonstration movie available showing Rana-30 operation.

Technical specifications

• Model: Rana-30
• Brand: IMT Co.,Ltd.
• Polishing motor output: 750W servo motor
• Holder motor output: AC 120W brushless motor
• Disc rotation speed range: 50–400 rpm (forward/reverse)
• Holder rotation speed range: 50–200 rpm (forward/reverse)
• Disc sizes supported: Grinding Ø250 mm, Ø305 mm; Polishing Ø250 mm, Ø300 mm; Magnetic Ø250 mm, Ø300 mm
• Maximum applied pressure: 400 N (range 50–400 N)
• Memory: Up to 16 programmable polishing conditions
• ABC setting: 3 configurable polishing condition steps
• Automatic pressure ramping: configurable increase/reduce over set seconds
• Safety: Double start-button (both left and right buttons must be pressed)
• Operation interface: Waterproof touch panel with emergency stop
• Dimensions (W×D×H): 600 × 745 (to drainage opening) × 675 mm
• Weight: 105 kg
• Power supply: 3-phase 200–220 V, 50/60 Hz
• Lubricator: Auto drip with interval and amount adjustment
• Primary air source: Required 0.5–0.7 MPa (separate regulator if >0.7 MPa)