Screw Jacks / Jack Posts / Lally Columns

The Ellis Heavy Duty Steel Lifting Shore provides temporary or permanent shoring support in heavy load applications in both commercial and residential structures.  Equipped with the Ellis MFG patented Thrust Bearing technology these shores can lift up to 10x more than standard screw jacks. Offered in various heights ranging from 10" to over 14' and with a safe load rating up to 56,000 lbs.  

The Ellis Light Duty Steel Lifting Shore is a patented adjustable structural support system incorporating a thrust bearing to reduce turning effort under load by 90%. These lifting shores can be used in temporary or permanent installations and offer safe load ratings up to 20,000 lbs. They are frequently used for additional support in crawl spaces and attics, and are also excellent for support under floors, ceilings, decks or staircases, as well as beams and slabs of wood, metal or concrete. Support under: floors, ceilings, decks, staircases, wood, steel, concrete beams and slabs.

The Light Duty Steel Shore is an adjustable support jack for temporary or permanent support. With up to 20,000 lbs of safe load capacity the Light Duty Steel Shore is a perfect solution for sagging floors, foundation issues, stabilize joist, additional support in crawl spaces, attics, ceilings, decks, staircases, wood, steel, concrete beams and slabs.  

The Ellis Stealth Lifting Shore is an adjustable structural support system designed to be both strong and narrow.  Each Stealth Shore has a max width of 3.5" and is able to fit and be sealed inside a standard 2x4 framed wall.  The patented Ellis Thrust Bearing Nut Assembly increases lifting capacity under load by up to 10x.  These lifting jacks can be used for temporary or permeant support loads up to a 20,000 lbs. 

The Ellis Light Duty Pivot Shore is a patented adjustable structural support system with flat plate pivoting ends designed to support a load at an angle.  The Pivot Shore has the patented Ellis Lifting Nut assembly that dramatically reduces friction while adjusting the length of the shore under load.  Each end of the Ellis Pivot Shore has a pivoting flat plate that pivots 45 degrees in each direction.  These lifting shores can be used in temporary or permanent installations.

The Ellis Mini Jacks are offered in two sizes, with minimum heights of either 6.5" (MJ-3) or 9.5" (MJ-6) and 15,000 lbs. of safe load capacity.

The Ellis 4x4 Screw Jack is a highly adaptable tool for constructing adjustable structural supports using standard 4x4 lumber. Suitable for both permanent and temporary use, it can be employed in residential, commercial, and emergency shoring scenarios with ease.

The Ellis 6x6 Screw Jack offers a 6" adjustment and securely attaches to 6x6 lumber. Its sturdy steel construction can support up to 30,000 lbs, making it ideal for permanent or temporary use in commercial concrete construction and structural repair projects. This jack provides a fast and reliable solution for adjustable support needs.

The Ellis Big-B Ultra Duty Steel Lifting Shore provides temporary or permanent shoring support in ultra heavy load applications in both commercial and residential structures.  Equipped with the Ellis MFG patented Thrust Bearing Technology these shores can lift up to 10x more than standard screw jacks. Currently offered in one size with adjustment from 12" to 16" and with a safe load rating up to 80,000 lbs.  

The Ellis Bridge Jack / Modular Building Jack can support up to 80,000 pounds. It is the most rugged and durable screw jack Ellis offers. This screw jack comes standard in 4 sizes, see below for details.

  The Ellis MFG Timber Jack is a versatile support that can support up to 30,000 lbs. Fasten it to the end of a 4x4 or 6x6 piece of lumber to create a shore with 5" of adjustment.  The low cost and high load capacity of the Timber Jack ranks it as having the best value in the Ellis Screw Jack family.

3/4" Diameter Steel Adjustment Rods are offered in lengths 12", 24", and 36".  Used to gain extra leverage when making height adjustment to the Light Duty Steel Lifting Shores and Mini Jacks.   Simply place one end of the adjustment rod in any of the 4 holes provided on the Jack and turn.

1" Diameter Steel Adjustment Rod is offered in lengths 12", 24", 36" and 60".  Used to gain extra leverage when in making height adjustment to the Heavy Duty Steel Shores and Bridge Jack product lines.   Simply place one end of the adjustment rod in any of the 4 (1.063" Dia.) holes provided on the Heavy Duty Steel Shores or Bridge Jacks.

The Ellis MFG Shoring Tripod is a simple and fast way to keep shores upright during the setup process.  It's all steel, its foldable for easy storage and transport, and it's removable.  The Shoring Tripod is designed to fit a wide range of post shores or shoring props from 1.5" up to a 3.5" nominal 4x4 Ellis Shore.

The Ellis Hydraulic Bottle Jacks are a great complement to the Ellis Screw Jacks and Steel Shores. If extra lifting power is needed use one of our 12 Ton or 20 Ton Hydraulic Jacks to assist your heavy lifting needs before shoring with Ellis Jacks.