In CNC machine tools and other equipment that use coolants and emulsions, luminaires may be exposed to splashes, liquid jets, and the accumulation of contaminants. For this reason, the ingress protection (IP) rating is one of the key selection criteria.
IP65 provides protection against dust ingress and water jets. IP67 ensures complete dust protection and resistance to temporary immersion in water under conditions defined by the standard. However, this does not automatically mean resistance to all types of industrial fluids, high-pressure washdowns, or aggressive chemical agents.
Before selecting a machine light, it is worth determining whether it will primarily be exposed to coolant splashes, frequent cleaning procedures, or direct contact with liquids. The IP rating should match the actual operating environment rather than the general application category of the machine.
A high IP rating alone does not guarantee resistance to oils, lubricants, and machining emulsions. Long-term exposure to such substances may affect seals, cables, protective covers, and other structural components. Therefore, it is essential to verify whether the manufacturer confirms the compatibility of the luminaire materials with the fluids used in a particular facility.
Operating temperature and machine cleaning procedures should also be taken into account. A light that performs well under occasional splashing may not be suitable for applications where coolant continuously flows over the housing. The selection process should consider both the technical specifications of the luminaire and the manufacturer’s operating recommendations.
During machining operations, a machine light may be exposed to impacts from tools, workpieces, or workstation equipment. In such environments, the IK rating becomes important, as it defines the enclosure’s resistance to mechanical impacts. IK10 corresponds to an impact energy of 20 J and is therefore worth considering in areas where luminaires are particularly vulnerable to damage.
Light flicker near rotating machine elements is not only a matter of visual comfort but also a safety concern. If fluctuations in light output occur at a frequency that coincides with the movement of a spindle, disc, or other rotating component, a stroboscopic effect may occur. As a result, a moving workpiece can appear stationary or seem to be moving more slowly than it actually is.
When selecting a machine light, attention should therefore be paid to the quality of the power supply system and the level of light flicker. Choosing an LED luminaire with the right power output is not enough. Its performance during operation and compliance with machine-lighting requirements are equally important. In equipment with high-speed rotating components, this is one of the parameters that should never be overlooked during workstation design.
A machine light should illuminate the machining area from a direction that minimizes shadows, reflections, and glare while ensuring that the operator’s view of the workpiece remains unobstructed. In enclosed machine tools, luminaires are typically installed inside the working chamber. At open workstations, brackets, articulated arms, or magnetic mounts may be suitable, provided that the manufacturer approves their use.
It is advisable to check whether the mounting system keeps the luminaire securely positioned during machine operation and whether cables are protected against abrasion, pull-out forces, and contact with moving parts. In environments with significant vibration, lighting solutions specifically designed for such conditions should be used in accordance with the installation instructions. A stable mounting system helps maintain the correct lighting direction and reduces the risk of luminaire damage.
When selecting lighting for a machine tool or production line, factors such as supply voltage, ingress protection rating, material resistance to operational fluids, mechanical durability, light quality, and mounting method should all be considered. Only by matching these parameters to real operating conditions can you choose a machine light that is truly suitable for a specific workstation.