G&N MPS R300 CM Precision Surface Grinding Machine

Overview

The G&N MPS R300 CM is a high-precision, vertically oriented surface grinding machine engineered for demanding metalworking and metallurgical applications. Utilizing a cup-wheel configuration with vertical spindle architecture, it delivers exceptional planarity, dimensional repeatability, and surface integrity on ferrous and non-ferrous workpieces—including hardened steels, sintered carbides, ferritic stainless steels, and soft magnetic materials such as ferrites. Its closed-loop grinding zone design minimizes coolant mist dispersion while maintaining strict environmental control in production environments. The machine operates on the principle of peripheral surface grinding, where material removal is achieved via controlled engagement between the rotating cup wheel and the horizontally indexed rotary table—ensuring uniform stock removal and minimizing thermal distortion during high-volume finishing operations.

Key Features

• Vertical spindle configuration with rigid cast-iron base and thermally stable column structure for long-term geometric accuracy
• Full-enclosure grinding chamber with integrated mist extraction interface compliant with EU Directive 2006/42/EC (Machinery Directive)
• Frequency-controlled rotary table (0–30 rpm) enabling precise synchronization with feed motion for optimal surface finish
• SPS-based control system built around Siemens SIMATIC S7-1200 PLC, featuring intuitive HMI touchscreen interface with multi-language support
• Programmable grinding cycles including roughing, semi-finishing, and fine-grinding stages with adjustable dwell time and step-down logic
• High-resolution automatic cross-feed axis with 1 µm incremental resolution and repeatable positioning accuracy ±0.5 µm
• Integrated error logging and real-time diagnostic feedback accessible via HMI screen or external service port

Sample Compatibility & Compliance

The MPS R300 CM accommodates flat, disc-shaped, or ring-type specimens commonly used in metallurgical QA/QC labs and precision component manufacturing—particularly those requiring strict control of ferrite content, grain structure, or hardness homogeneity. It supports standardized specimen geometries per ASTM E112 (grain size), ISO 4967 (non-metallic inclusions), and DIN EN 10052 (heat treatment terminology). Optional magnetic chucks ensure secure clamping of ferromagnetic alloys without mechanical deformation, while CBN/diamond wheel compatibility enables low-damage grinding of brittle ceramics and ferrite cores. All electrical systems conform to IEC 60204-1; safety interlocks meet EN ISO 13857 requirements for safeguarding.

Software & Data Management

The embedded S7-1200 controller provides deterministic cycle execution and retains up to 256 user-defined grinding programs with version timestamping. Process parameters—including wheel speed, table velocity, feed rate, coolant activation, and dwell duration—are fully configurable and exportable in CSV format via USB interface. Audit trail functionality records operator ID, program selection, start/stop timestamps, and alarm events—supporting GLP/GMP documentation requirements under FDA 21 CFR Part 11 when paired with validated user authentication protocols. Remote diagnostics are enabled through Ethernet/IP connectivity for predictive maintenance scheduling.

Applications

• Precision flattening of heat-treated tool steels prior to hardness testing (e.g., Rockwell C or Vickers microhardness)
• Surface preparation of ferrite cores for magnetic property characterization (per IEC 60401-3)
• Finishing of sintered tungsten carbide inserts used in cutting tools and wear-resistant components
• Pre-polishing of metallographic samples for optical/electron microscopy analysis
• Controlled thickness reduction of thin-walled metallic rings in aerospace and automotive transmission systems
• Batch-mode grinding of stainless steel flanges where surface roughness Ra ≤ 0.4 µm and flatness ≤ 3 µm over 100 mm are specified

FAQ

Is the MPS R300 CM suitable for grinding non-ferrous metals such as aluminum or copper alloys?
Yes—when equipped with appropriate diamond or silicon carbide wheels and adjusted coolant flow rates, it achieves consistent surface quality without smearing or loading.
Can the machine be integrated into an automated production line?
It features Profinet and digital I/O interfaces compatible with common MES and SCADA platforms; optional robotic load/unload integration kits are available upon request.
What certifications does the machine carry for international deployment?
CE-marked per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU; RoHS-compliant construction with documented material declarations.
Does G&N provide application engineering support for process validation?
Yes—qualified field engineers assist with PQ protocol development, grinding parameter optimization, and IQ/OQ documentation aligned with ISO 9001 and ISO/IEC 17025 laboratory accreditation frameworks.