YM-2A Metallographic Sample Pre-grinder

‌YM-2A Vacuum Pre-Grinder: The Automation-Ready Start to Perfect Polishing‌

Tired of bottlenecks in your automated polishing line? The YM-2A Pre-Grinder eliminates manual prep with its ‌vacuum-lock abrasive system‌ and customizable RPM (400–780). Designed for labs scaling toward full automation, this heavy-duty workhorse (55kg) ensures every sample is flat, scratch-free, and ready for robotic polishing – no adhesives, no delays.

‌Key Features‌

• ‌Instant Abrasive Changes‌: Centrifugal vacuum tech grips 230mm paper in seconds – zero glue, zero downtime.
• ‌Speed for Automation‌: 780 RPM option tackles hard alloys and ceramics, slashing prep time by 60%.
• ‌Plug-and-Play Integration‌: Fits seamlessly with robotic arms or conveyor systems (740×700×320mm footprint).
• ‌Industrial-Grade Motor‌: 0.55kW YS7146 motor handles 24/7 operation without overheating.
• ‌Water-Cooled Precision‌: Reduces friction for consistent results across steels, polymers, and composites.

‌Technical Specs ‌

Parameter	Specification
Grinding Disc Diameter	230mm
Abrasive Paper Size	230mm
Speed	400–780 RPM (customizable)
Motor	YS7146, 0.55kW, 380V, 50Hz
Dimensions	740×700×320mm
Weight	55kg

‌Why Automate with YM-2A?‌

• ‌Seamless Workflow‌: PG-Series Polishers for end-to-end automation.
• ‌ISO Compliance‌: Consistent prepping meets ASTM E3 and ISO 9001 standards.
• ‌Future-Proof Design‌: Upgrade to 780 RPM as your lab scales.

      During the metallographic sample preparation, pre-grinding is the essential former procedure before polishing. The pre-grinding enhances greatly the efficiency of the sample preparation. YM-2A is designed according to the customers’ requests and adapted to various kinds of materials. The size of the disc and the transmission power are larger than the same products in the market, which is the ideal equipment for pre-grinding. Working principle: the water flows into the rotating grinding disc through the water tube, and then the water below the abrasive paper flows out under the centrifugal force of the rotating disk, which generates a vacuum space and presses the abrasive paper on the disc tightly to do the pre-grinding work. When the disc stops rotating, the effect disappears and the abrasive paper can be easily taken off.

Main Parameters:

Grinding Disc Diameter	230mm
Abrasive Paper Diameter	230mm
Rotating Speed	400r/min, 500r/min (630r/min, 780r/min custom-made)
Electromotor	YS7146, 0.55kw, 380V, 50Hz
Dimensions	740×700×320mm
Weight	55kg