ZPG-300 Metallographic Polishing Machine | Automatic, Damage-Free Polishing, 300mm Disc

ZPG-300: The “No-Skill-Needed” Polisher for Flawless Metallographic Samples‌‌

Tired of manual polishing ruining delicate alloys or ceramics? The ‌ZPG-300 Metallographic Polishing Machine‌ automates the fussiest step in sample prep. Designed for metallurgy labs, QC teams, and failure analysis, it polishes ‌multiple specimens at once‌ (Φ22-45mm) with ‌zero embedded abrasives‌ or plastic deformation. Just load your mounted samples, set the timer (up to 99 hours), and let its ‌horizontal vibration‌ and ‌adjustable frequency‌ (25-400Hz) do the work. No training. No guesswork. Just lab-grade finishes for SEM, EBSD, or ASTM standards.

‌Key Benefits :‌

• ‌Damage-Free Polishing‌: Horizontal vibration maximizes cloth contact, preventing ‌deformation layers‌ and ‌embedded defects‌.
• ‌Set-and-Forget Automation‌: Programmable timer + auto frequency adjustment = ‌consistent results, every time‌.
• ‌Batch Processing‌: Polish dozens of 22mm microsamples or 45mm geology cores in one load.
• ‌ABS Enclosure‌: Transparent dust cover keeps labs clean and lets you monitor progress.
• ‌Plug-and-Play‌: Pre-calibrated – start polishing in 5 minutes.

Technical Specs Table ‌

‌Parameter‌	‌ZPG-300 Specifications‌
‌Polishing Disc‌	300mm diameter (fits 300mm cloths)
‌Sample Sizes‌	Φ22mm, Φ30mm, Φ45mm
‌Frequency Range‌	25-400Hz (auto-adjusted for material)
‌Voltage Range‌	50-90V (precise intensity control)
‌Max. Timer‌	99 hours (set-and-forget)
‌Power‌	220V, 1.5kW (energy-efficient)
‌Dimensions‌	450×565×400mm (compact footprint)
‌Weight‌	90kg (stable, vibration-dampened)
‌Certifications‌	CE, ISO9001
‌Shipping‌	‌5-8 days worldwide‌, 1 MOQ

ZPG-300 Vibratory Polishing Machine is designed for reaching the high quality polishing and reducing the equipment dependence on staff skills. It uses a spring plate and a magnetic motor to produce vibration in the upper and lower directions. The spring plate between the polishing disc and the vibrating body is angled so that the sample can move circularly in the disc. The operation is simple and the applicability is wide. It can be applied to almost all kinds of materials. The polishing time can be arbitrarily set up according to the sample state, and the polishing area is wide which would not generate damage layer and deformation layer. It can effectively remove and avoid the characteristics of floating, embedded and plastic rheological defects. Unlike traditional vibratory polishing machines, ZPG-300 can make horizontal vibration and maximum increase the contact time with the polishing cloth. Once the user has set the program, the sample will automatically start vibratory polishing in the disc. Besides, many pieces of samples can be placed at one time, which greatly improves the work efficiency, and the external transparent dust cover can ensure the cleanness of the polishing disc. The whole machine is made of ABS material. The appearance is novel and beautiful, and the vibration frequency can be adjusted automatically with the working voltage. This machine is not suitable for the polishing of the workpiece with special rough surface, it takes too long time, but it is still the best choice of fine polishing machine.

Main Parameters:

Polishing Disc Diameter	300mm
Polishing Cloth Diameter	300mm
Power	220V, 1.5kw
Voltage Range	50-90V
Frequency Range	25-400Hz, automatic adjusted
Max. Setup Time	99 Hours 99 Minutes
Sample Holding Diameter	Φ22mm, Φ30mm, Φ45mm
Dimension	450×565×400mm
Net Weight	90kg