*) with a drive ratio of 5 motor revs / millimeter and a resolution of 50 nanometers per step, the step size was visible in the data. With the current 16.7 nanometers the steps disappear in the noise floor.

Features

• Fully welded frame and cross head for high rigidity and high loading rate
• Pre-loaded backlash-free 2" ball screws
• 45 degrees contact angle ball bearings at the ends of the spindles
• Complete backlash elimination with 7000 Newtons tensile preload on the spindles and the end bearings
• Self-aligning universal joint (cardanic) suspension of the end bearings
• No guidance of the cross head other than the spindles for friction free direction reversing
• Smooth 3-stage 1:75 Geared rubber belt drive
• Extremely easy alignment procedure of the spindles (during assembly)