daliborb,
The spindle on your machine has one gear only. From the chart it looks like you can ask the machine to deliver 52 NM continuously or 83 NM at 40% (ie 4 minutes at full load and 6 minutes at reduced load.
According to my calculation you should be able to take a 4mm wide cut 10 mm deep at 125 RPM with a .017 mm chip per tooth and be right at 52 NM of torque.
Give it a spin you can always back off the depth or feed rate.
Good Luck