US customer screw jacks with locking collar. US customer use two inverted 0.5 ton screw jacks per machine, one handwheel manual operation. Custom made lift screw with full keyway as anti-rotate mechanism. Custom made copper shaft locking collar with inner Tr 20x5 theads for locking the lifting screw.
Features: 1.0.5 ton screw jack 2.US customer 3.shaft locking collar 4.inverted screw jacks 5.custom made lift screw 6.anti-rotate mechanism