Spectrum Abrasive Grinding Machine Stepless Speed Control with Suction Fan

GPM-2-300 Grinding & Polishing Machine – One Machine, Two Processes, Zero Dust‌
‌Why waste time juggling separate grinders and polishers? The GPM-2-300 handles ‌rough grinding‌ to ‌mirror polishing‌ in one rugged machine. With ‌stepless speed control‌ (100-1400 RPM), a ‌300mm heavy-duty disc‌, and a ‌built-in suction fan‌ to eliminate dust, it’s the Swiss Army knife of metallography. Ideal for steel mills, foundries, or labs processing everything from cast iron to aerospace alloys—no more cross-contamination or messy workspaces.

‌Key Features ‌

• ‌Grind + Polish in One‌: Skip the machine shuffle – handle coarse to fine finishes effortlessly.
• ‌No More Dust Drama‌: Built-in suction fan captures 95% of debris (no more lab cleanup headaches).
• ‌Speed Flexibility‌: Adjust RPM from 100 (delicate copper) to 1400 (hardened steel) with a twist.
• ‌DC Brushless Motor‌: 1.1kW power, 220V compatibility, and whisper-quiet operation.
• ‌Easy Paper Swaps‌: Change 300mm abrasive discs in seconds – no tools needed.

‌Technical Specs‌

Parameter	Details
Disc Diameter	300mm (Largest in class)
Speed	100-1400 RPM (stepless) or 4 preset modes
Motor	DC Brushless, 1.1kW, 220V
Dimensions	820×440×940mm (Heavy-duty footprint)
Weight	122kg (Stable for high-torque grinding)

‌Why GPM-2-300 Stands Out‌

• ‌Dust-Free Guarantee‌: Competitors require external vacuums – ours is built-in.
• ‌DC Motor Advantage‌: Longer lifespan and energy savings vs. traditional AC motors.
• ‌One-Stop Workflow‌: Cut sample prep time by 30% by avoiding machine swaps.

  In the process of preparation of metallographic sample, pre grinding, polishing and grinding are the indispensable procedures, which are usually finished by the grinding and polishing machine. However, for some rough work pieces, they should be finished by some special machines. According to the different kinds of requirements of the customer, our company designs GPM-2-300 spectrum grinding machine, which has novel and beautiful appearance, and the whole frame adopts spray process. The machine is very easy to use and the abrasive paper is also convenient to be replaced. It saves time and avoids wasting. There is an internal dust collecting device, makes it safety and environmental protective. This machine starts steady and has large transmission power and low noise. This machine can be adapted to various materials preparation of test samples, improves the quality and efficiency of the grinding and polishing, which is the best equipment of metallographic sample preparation.

Main Parameters:

Grinding and Polishing Disc Diameter	300mm
Abrasive Paper Diameter	300mm
Rotating speed	100～1400r/min, stepless; Or four speed 300r/min, 600r/min, 900r/min, 1400r/min
Electromotor	DC brushless motor, 220V, 1.1kW
Dimensions	820×440×940mm
Weight	122kg