Adjustable Jack

1.Introduction

AnAdjustable Jackis a mechanical or hydraulic device designed to lift,support,or position heavy loads with precision.These jacks are widely used inautomotive repair,construction,industrial maintenance,and machinery alignmentdue to their versatility,stability,and load-bearing capacity.Depending on the design,they can be manually operated(screw jacks)or hydraulically powered(hydraulic jacks).

2.Types of Adjustable Jacks

1.Hydraulic Adjustable Jacks

-Utilize hydraulic pressure to lift heavy loads(e.g.,vehicles,industrial equipment).

-Example:US8297595B2 Hydraulic Horizontal Jack–Features adjustable jib and link rods to modify lifting height and load capacity,suitable for both low-chassis and high-chassis vehicles.

-Common intransmission jacks,which support gearboxes during removal/installation.

2.Screw Jacks(Mechanical Adjustable Jacks)

-Operate via a threaded screw mechanism for fine height adjustments.

-Used inconstruction scaffolding(e.g.,Tianjin SS Adjustable Steel Props)to support structures at varying heights.

-Also found inadjustable pedestals(e.g.,plastic screw jacks for hotel furniture leveling).

3.Adjustable Jack Stands

-Provide stable support after lifting(e.g.,APEXTREME Foldable Jack Standswith 5-stage height adjustment,3T capacity).

3.Key Features&Specifications

-Load Capacity:Ranges from1.5T(screw jacks)to4T(hydraulic jacks).

-Adjustability:

-Hydraulic jacks offertelescopic ramsfor extended lift range.

-Screw jacks allowincremental height adjustments(e.g.,25–125mm deflection in scaffolding props).

-Materials:

-Steel(Q235/Q345 for durability).

-Galvanized or powder-coatedfor corrosion resistance.

-Safety Features:

-Locking mechanisms(e.g.,pin-locking in jack stands).

-Foot pedals&hydraulic controlsfor stable operation.