External cylindrical grinding machine MGK2860

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Product overview
The MGK28 Series is a compact, high-performance vertical CNC grinder designed for precision internal, external, and flat surface grinding in a single setup. With a rigid structure, ceramic grinding wheel options (CBN or diamond), and intelligent automation, it delivers exceptional accuracy, surface finish, and production efficiency.

Key Features

• Rigid Integrated Structure: Machine bed made from HT300 cast iron with five-rib internal reinforcement and stress-relieving treatment; bending resistance up to 4800 N/mm² for superior stiffness and vibration damping.
• High-Precision Grinding Wheel System: Ceramic grinding wheel bonded with CBN or diamond abrasives; honeycomb pore design to enhance chip removal and reduce grinding heat by 35%; optimized dynamic balancing maintains vibration within ≤0.5 μm.
• Precision Cooling System: Five-level pressure-regulated coolant system providing ±2% flow stability; 360° adjustable nozzles increasing cooling coverage by 55%; integrated centrifugal oil-mist separator for cleaner environment and improved safety.

Recommended Configurations

• Spindle System: High-precision spindles, spindle motors and cooling systems; spindle adjustment system (adjustable grinding head).
• Feed and Worktable System: High-precision servo motors, ball screws, linear guides, electric worktable lifting and feed control; magnetic worktables or mechanical clamping systems available depending on workpiece requirements.
• Cooling and Chip Removal System: Coolant circulation and injection system, high-efficiency filtration devices, automatic chip removal conveyors and collection tanks.
• Electrical and Automation System: CNC control systems and PLC, HMI, automatic dressing control, automatic loading/unloading systems, and workpiece clamping devices.
• Grinding Wheel and Grinding Head System: Electric grinding wheel adjustment devices and dressers, adjustable grinding head devices (horizontal or vertical), grinding wheel balancing systems.
• Precision Positioning and Vibration Suppression: Laser/optical measurement systems and displacement sensors, dynamic vibration suppression and damping devices.
• Safety and Lubrication: Protective covers, safety doors, emergency stop buttons, automatic lubrication systems and filtration devices.
• Cutting Tools and Accessories: Grinding wheel dressing tools and workpiece fixtures.

Application Case

• Client: Precision auto parts manufacturer (South Korea)
• Use case: Flat and internal grinding of brake discs for electric vehicles
• Setup: MGK28 configured with in-process gauging, magnetic coolant filtration and spindle chiller
• Results: Dimensional tolerance held at ±0.003 mm; surface finish improved to Ra ≤ 0.45 μm; cycle time reduced by 22% with automated correction and temperature control
• Client feedback: "The MGK28 combines precision and simplicity. Its vertical configuration and in-process measurement allow us to maintain extremely tight tolerances with minimal operator intervention."

Technical specifications

• Model (commercial designation): MGK2860 (MGK28 Series)
• Max. workpiece turning range: φ750 mm
• Max. workpiece height: 400 mm
• Table diameter (example model values): φ600 mm
• Workpiece table load: 600 kg
• Series-level values (MGK28 Series): Max Table Ø1250 mm · Max Workpiece Ø1350 mm · Max Grinding Height 500 mm
• Machine bed material: HT300 cast iron with five-rib reinforcement
• Bending resistance: up to 4800 N/mm²
• Grinding wheel types: ceramic wheel bonded with CBN or diamond abrasives; honeycomb pore design
• Dynamic vibration (grinding wheel balancing): ≤0.5 μm
• Coolant system: five-level pressure-regulated coolant with ±2% flow stability; 360° adjustable nozzles; centrifugal oil-mist separator
• Typical process improvements reported: tolerance ±0.003 mm; surface finish Ra ≤0.45 μm; cycle time reduction ~22% with automation and temperature control