Self-locking hydraulic cylinder Jack

Self-locking type hydraulic jack is used for supporting heavy in the long term, it could supportheavy without oil pressure, safe and reliable. lt also could be used under water, single acting.return with loading, nut can be locking automatically, making loading more safe, especially in thelarge project, it is more easily to be operated and controlled, it has pressurizer, pres-relief valve isprevent to over load in the cylinder to protect jack.

Single acting, load retraction.
Can withstand deflected loads up to 5% of the jack’s rated capacity.
Overflow hole doubles as a stroke limiter.
Self-locking to hold load safely for long periods of time.