Hydraulic and Lifting Tools
Jacks lift vehicles and equipment for service and rigging. Hydraulic bottle and floor jacks are the catalog class.
Fonctionnement
Pumping the handle forces fluid into a cylinder that extends the ram; a release valve lowers it under control. The jack lifts but never holds for work underneath — rated stands take the load once height is reached. Capacity, closed height, and stroke define fit for each task.
Types et variantes
- Hydraulic Jack
- Bottle or floor jack that lifts vehicles and equipment hydraulically.
Comment choisir
Capacity should comfortably exceed the corner or point load, not the whole vehicle's weight; closed height must fit the clearance available; stroke must reach working height. Firm, level bearing under the base is as critical as the rating — soft ground and side loading are how jacks fail.
Normes et certifications
- OSHA · 29 CFR 1926.300
- General guarding and condition requirements for hand and power tools in construction.
Questions fréquentes
What is the difference between a bottle jack and a floor jack?
Geometry. A bottle jack lifts high capacities vertically from a small base but needs clearance for its height; a floor jack rolls under low equipment and lifts through an arc on a saddle.
Can a jack support a load during work?
No. Jacks lift; rated jack stands or cribbing hold. Hydraulic seals can bleed down without warning, so nothing goes under a load supported only by a jack.
How is jack capacity chosen?
From the actual point load — usually a corner, roughly a third to half of total weight — with margin. An overloaded jack may lift and then fail at height.