Double Wheels Metallographic Sample Pre-grinder with Two Speed Rotating

YM-2A Dual-Wheel Pre-Grinder – The 2-Minute Setup for Perfect Polishing‌
‌Why waste time gluing abrasive paper? The YM-2A’s ‌water vacuum system‌ grips discs in seconds – no clamps, no glue, no cleanup. Switch between ‌400 RPM‌ (soft alloys) and ‌500 RPM‌ (steel/ceramics) with a dial. Need more power? Customize up to ‌780 RPM‌ for hardened materials. With a ‌stainless steel frame‌ and ‌55kg lightweight build‌, it’s the easiest way to prep samples for busy labs, classrooms, or workshops.

‌Key Features ‌

• ‌Water-Powered Grip‌: No sticky residue – water creates a vacuum to hold abrasive paper.
• ‌Dual-Speed Muscle‌: Gentle or aggressive grinding – your choice.
• ‌Custom RPM Option‌: Upgrade to 630/780 RPM for titanium or composites.
• ‌Stainless Steel Frame‌: Survives spills, rust, and daily lab abuse.
• ‌Move It Anywhere‌: 55kg weight + compact size (740×700mm) fits tight spaces.

‌Technical Specs Table‌

Parameter	Details
Disc Diameter	230mm (Fits standard abrasive paper)
Speed	400/500 RPM (Upgradeable to 780 RPM)
Motor	YS7146, 0.55kW, 380V, 50Hz
Dimensions	740×700×320mm (Fits small workbenches)
Weight	55kg (Lightest in its class)

‌Why YM-2A Stands Out‌

• ‌No Adhesive Hassle‌: Competitors use glue – the YM-2A’s water system saves 10+ minutes per setup.
• ‌Lab Space Saver‌: Smaller than a mini-fridge, but handles heavy-duty grinding.
• ‌Beginner-Proof‌: New hires learn it in 2 minutes.

Double Wheels Metallographic Sample Pre-grinder with Two Speed Rotating

      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