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Base Jack: A Screw Jack with A Base Plate, Used for Leveling Scaffolding Systems

Publish Time: 2026-05-22     Origin: Site

The scaffolding base jack is a type of screw jack featuring a base plate at its bottom. Serving as the foundational component of a scaffolding system, it allows for the adjustment of scaffolding height on uneven terrain while ensuring the entire structure remains level and stable. The large base plate effectively distributes the weight of the scaffolding system evenly across the ground, providing enhanced stability and structural support. Manufactured from high-quality galvanized steel, these base jacks are robust, durable, and possess excellent corrosion-resistant properties.

Scaffolding base jacks are widely utilized across a diverse range of projects, including general construction, industrial production, and home renovation. With their simple design, installation is effortless and efficient; furthermore, their user-friendly interface makes them exceptionally easy to operate and master.

Key Specifications of Scaffolding Base Jacks:

Load Capacity: Capable of supporting weights ranging from 6,000 lbs to over 10,000 lbs.
Adjustability: Offers a vertical height adjustment range of 15 to 18 inches.
Material: Manufactured from hot-dip galvanized steel or cold-rolled steel.
Screw Types: Available in various configurations, including solid base jacks, hollow base jacks, U-head jacks, adjustable fork heads, and more.

Classification of Scaffolding Base Jacks

Hollow Base Jack

Threaded Rod: Hollow

Thread Type: Coarse pitch and ACME threads (4 TPI)

Diameter: 30 – 48 mm (Outer Diameter)

Weight: Lightweight

Applications: Various mainstream scaffolding systems


Solid Base Jack

Threaded Rod: Solid

Diameter: 26 to 38 mm

Weight: Heavy

Load Capacity: High-load applications

Applications: Frame scaffolding and quick-erect platforms


Swivel Base Jack

Diameter: 38 mm

Wall Thickness: 4 mm and 5 mm

Base Plate Thickness: 5 – 8 mm

Height: 600 – 800 mm

Applications: Sloped ground; Cuplock Scaffolding, Ringlock Scaffolding, and Kwikstage systems


U head Base Jack

Diameter: 26-48mm

Tube Wall Thickness: 5 mm

Height: 0-800 mm

Surface Finish: Hot-dip galvanized


Fork Head Jack

Diameter: 38 mm

Plate Size: 240x155mm

Wall Thickness: 4 mm

Base Plate Thickness: 5 mm

Surface Finish: Hot-dip galvanized


1500mm Base Jack

Diameter: 48 mm

Tube Wall Thickness: 5 mm

Height: 1500 mm

Surface Finish: Hot-dip galvanized

Scaffolding System: Support frames


Caster Screw Jacks

Diameter: 32 – 38 mm

Threaded Rod: Hollow and Solid

Height: 400 – 600 mm

Casters: PU, Rubber, and Iron

Applications: Mobile scaffolding towers


Scaffolding Base Plates

Plate Dimensions: 120x120 mm to 200x200 mm

Plate Thickness: 4 – 10 mm

Socket Type: Solid Rod and Hollow Tube

Socket Outer Diameter: 16 mm to 48 mm

Surface Finish: Zinc-plated


Scaffolding Base Jack Nut

Manufacturing Process: Forging, Cast Iron, Cast Steel

Surface Finish: Zinc-plated

Applicable Tube Diameter: 26 mm to 48 mm

Material: Q235, C25, QT 450-10


Compatibility of Adjustable Base Jacks with Scaffolding Systems

Ringlock Scaffolding Base Jack Dimensions

Diameter

Height

Max. Extension

Thread Pitch

Surface Finish

38mm

600mm

450mm

8mm

Galvanized

38mm

600mm

450mm

6.35mm

Galvanized

38mm

800mm

600mm

8mm

Galvanized

38mm

800mm

600mm

6.35mm

Galvanized

Cuplock Scaffolding Base Jack Dimensions

Diameter

Height

Max. Extension

Thread Pitch

Surface Finish

38mm

600mm

450mm

6.35mm

Galvanized

38mm

650mm

500mm

6.35mm

Galvanized

38mm

760mm

610mm

6.35mm

Galvanized

Kwikstage (Q-stage) Scaffolding Base Jack Dimensions

Diameter

Height

Max. Extension

Thread Pitch

Surface Finish

38mm

730mm

610mm

6.35mm

Painted& Galvanized

38mm

708mm

550mm

6.35mm

Galvanized

38mm

600mm

450mm

6.35mm

Galvanized

34mm

650mm

500mm

6.35mm

Galvanized

Frame Scaffolding Base Jack Dimensions

Diameter

Height

Max. Extension

Thread Pitch

Type

26mm

600mm

450mm

6.35mm

Solid

28mm

600mm

450mm

6.35mm

Solid

30mm

600mm

450mm

6.35mm

Solid

32mm

600mm

450mm

6.35mm

Solid

34mm

24 inches

450mm

6.35mm

Solid

34mm

600mm

450mm

6.35mm

Hollow

For more detailed technical specifications or to discuss procurement options, please contact us; we will provide you with a tailored solution.

Advantages of EK Scaffolding Base Jacks

1. Precise Adjustment: Featuring a helical screw design, our base jacks allow for easy adjustment of scaffolding height, ensuring the structure remains level and stable.

2. High-Quality Materials: Manufactured from high-strength steel, our base jacks are capable of withstanding heavy loads.

3. Surface Treatment: We offer a variety of surface treatment options to choose from, including painting, coating, electro-galvanizing, and hot-dip galvanizing. These treatments provide effective corrosion resistance—even in harsh weather conditions—thereby extending the product's service life.

4. Certified Standards: EK Scaffolding is an ISO 9001 certified scaffolding manufacturer. Our base jacks comply with EN 12811, AS/NZS 1576, CSA, and ANSI standards.

5. Versatile Application: Our base jacks integrate seamlessly with various standard scaffolding systems and are widely applicable across commercial, residential, and industrial scaffolding projects.

6. Quality Reports Available: We provide product quality inspection reports (SGS) to our clients upon request.

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