Trapezoidal screw jacks. They provide good mechanical synchronization.
These jacks can be properly connected with shafts, joints, bevel gearboxes.
They can be driven by different motors: electrical, hydraulic, or pneumatic.
.חברת יונימק מייצרת ג'קים גדולים עבור תעשיית העיבוד-השבבי .לאחרונה, היא ספקה ג'ק בעל ספינדל של 8 מטר וקוטר של 160 ממ
The precision requirements of this order were very strict.
The tolerance on the pitch difference between the two spindles
had a superior limit of 0.28 mm
on a total of 8 meters stroke.
