ISO 23125:2010 specifies the requirements and/or measures to eliminate the hazards or reduce the risks in the following groups of turning machines and turning centres, which are designed primarily to shape metal by cutting.
Group 1: Manually controlled turning machines without numerical control.
Group 2: Manually controlled turning machines with limited numerically controlled capability.
Group 3: Numerically controlled turning machines and turning centres.
Group 4: Single- or multi-spindle automatic turning machines.