Vertical Grinding Machine

The vertical grinding machine, model BS-MD-L250S, is offered by the professional manufacturer, BOSI Tools. It features a 750W pure copper motor, a grinding wheel size of 250×32×25mm, a rated voltage of 380V, a frequency of 50Hz, and a no-load speed of 2840r/min.

Its vertical design results in a low center of gravity and a small footprint, making it suitable for continuous workshop operations. Equipped with high-quality grinding wheels and high-strength precision steel gears, it operates smoothly.

It is suitable for deburring, welding scar removal, and tool sharpening in industries such as machinery manufacturing, instrumentation, and hardware tools.

Product Parameters

Product Advantages

Vertical Structure: Compared to benchtop grinders, vertical machines have a lower center of gravity, better stability, and are suitable for continuous grinding over long periods, reducing the impact of vibration on precision.

750W pure copper motor: all-copper windings, high efficiency, low temperature rise, 380V three-phase power supply, large torque, suitable for heavy-duty grinding.

Large diameter grinding wheel: A 250mm grinding wheel provides a longer grinding surface, covering larger workpieces in one stroke and improving efficiency.

Thickened Cast Iron Base: Absorbs vibration, prevents machine displacement, and ensures grinding accuracy.

High-Strength Precision Steel Gears: Smooth transmission, low noise, and long service life.

Protective Cover Design: The semi-enclosed protective cover effectively blocks flying sparks and debris, protecting operator safety.

Dual Grinding Wheel Configuration: Different grit grinding wheels (coarse grinding / fine grinding) can be installed on both sides, eliminating the need for frequent changes.

Why Choose Us?

BOSI vertical grinding machines are designed for industrial-grade continuous grinding. The vertical design saves more table space than benchtop machines and has a lower center of gravity, preventing wobbling even during prolonged heavy-duty grinding. The 750W three-phase motor boasts high starting torque and strong overload capacity, suitable for 8 hours of continuous operation per day.

The thickened cast iron base undergoes aging treatment to prevent deformation and ensure long-term parallelism between the grinding wheel spindle and the worktable. Grinding wheels are consumables and are not covered by warranty. Wear parts (bearings, belts) are supplied separately. Choose a vertical grinding machine to improve your workshop's grinding efficiency with stable performance.

Product Testing Items and Data

Dynamic balancing test: After the grinding wheel is assembled, the overall dynamic balancing accuracy is ≤ G6.3 grade, and the amplitude during operation is ≤ 0.05mm.

Motor insulation resistance: cold state insulation resistance ≥10MΩ, hot state insulation resistance ≥2MΩ, withstand voltage 1800V/1min without breakdown.

At a grinding wheel linear speed of 2840 r/min, the linear speed of a 250 mm grinding wheel is approximately 37 m/s, which is far below the safe upper limit of 50 m/s, leaving a margin.

No-load noise: ≤80dB(A), lower than the industry standard (85dB).

Spindle runout: radial runout ≤ 0.02 mm, axial runout ≤ 0.01 mm.

Base flatness: The flatness of the base mounting surface is ≤0.1mm/m to ensure the machine is fixed and stable.

Protective cover strength: withstands grinding wheel blasting test (simulated damage) with no flying fragments, conforming to GB/T 2493 standard.

Continuous operating temperature rise: After 1 hour of full-load operation, the motor temperature rise is ≤75K and the bearing temperature rise is ≤45K.