Certifications - StoneWell Machinery

Quality Management System — design, manufacturing, and service processes certified by SGS.

All machines comply with European safety, health, and environmental protection standards.

Factory and production capacity independently audited and verified by SGS inspection services.

Full compliance with EU Machinery Directive for safety components and risk assessment.

Quality Control

Rigorous Testing, Reliable Performance

Every StoneWell machine undergoes a comprehensive quality control process before leaving our factory:

Geometric Accuracy Inspection
Laser interferometer calibration for positioning accuracy and repeatability on all linear axes.
Ballbar Circularity Test
Renishaw QC20-W ballbar test for contouring accuracy, servo tuning, and backlash compensation.
Spindle Thermal Growth Test
Thermal displacement measurement under continuous operation to ensure stability over long cycles.
48-Hour Continuous Run Test
Full program cycle test simulating real production conditions before machine acceptance.

[ Quality Control Lab Image ]