Screw Base Jacks – imetalwork

What is Base Jack?

Scaffolding screw base jack base is made of screw tube and sheet metal plate, and assembled with casted nut. The application is support scaffolding system, ringlock scaffolding system, cuplock scaffolding system, kwikstage scaffolding system, haki scaffolding system, tube&clamp scaffolding system and also formwork system, adjusting the construction system height flexibly.

Construction is usually carried out at a height above the ground. Scaffolding is used to provide a stable and secure working platform for construction workers on the ground or where ladders or lifting devices cannot reach.

Scaffolding is usually considered a temporary structure entered by internal or external workers. Many workplaces are uneven, and scaffolding adjustable base jacks help to provide a safe and level working surface at a variety of working heights on the ground.

A base jack is a scaffolding base jack used to hold scaffolding in place horizontally. The adjustable screw jack is mounted on a stable base and contains a large adjustable screw for moving scaffolding up and down. After scaffolding is built, use base jack scaffold to level the working platform before use. Adjustable U-Head Jacks are designed to be used in conjunction with adjustable system scaffolding. The main function of adjustable U-Head jack is to hold timber beams securely in place.

Scaffolding Screw Base Jack Types

Hollow Base Jack

Solid Base Jack

U-head Base Jack

Swivel Base Jack

Base Jack Components Details

A complete set of base jack consists of three parts: screw rod, base plate and screw nut.

Base Jack Classification:

♦ The base jack is used at the bottom of the vertical steel rod and the bottom plate is at the bottom. The bottom plate can be folded or not folded.

♦ According to the lead screw material, can be divided into hollow base jack and solid base jack.

♦ The screw of hollow base jack is made of thick wall steel pipe, which is light in weight.

♦ The base of solid base jack adopts round steel bar, which is heavy in weight.

The Base Jack is manufactured from high tensile steel and fitted with a “Double Podger” collar. It is used as a levelling solution for all types of scaffolding system such as Ringlock Scaffolding, Cuplock Scaffolding and Kwikstage Scaffolding.

Scaffolding Base Jack "Screw Thread " Production

Screw Rod Process:

Raw Materials → Blanking → Pipe Cutting/Sawing → Thread Rolling.

In this process, we need to use a pipe cutting machine and a thread rolling machine. The factory currently has two thread rolling machines, a two-axis thread rolling machine, and a three-axis thread rolling machine.

Base Plate Process:

Shearing → Blanking → Forming (Drumming) → Punching → Welding.

We have shearing machines, forming machines and welding machines to assist in the completion of the bottom plate process.

Screw Nut Process:

Black Parts → Surface Treatment(Electro-Galvanized/Hot-Dip Galvanized) → Screw Nuts → Broken Teeth (Spot Welding/Stamping).

After the nut arrives at the factory, it will first undergo surface treatment, usually electro-galvanized and hot-dip galvanized, then the nut will be screwed onto the screw, and finally the thread will be destroyed on the screw. This process will use spot welding or stamping.

Packing & Loading：

After the above three sets of procedures are completed, the base jack will be packed and boxed, and the completed screw base jack will be shipped to the customers.

Experienced packing & loading team can effectively monitor the loading schedule of scaffolding base jack, make adjustable base jack arrive at the port of shipment within the scheduled time, and promote customers to receive the base jack scaffold on time.

Inspection & Quality Test:

The professional quality inspection team will carry out strict quality inspection in the production process and before delivery to ensure that the base jack scaffold quality meets customer requirements and improve the positioning of iMW adjustable base jack in the market with high quality.

According to customers’ different requirements, we test the products through the professional third-party quality inspection center according to the data and standards provided by customers, so as to prove to meet customers’ requirements.

Scaffolding Hollow Adjustable Base Jack

Scaffolding hollow adjustable base jack made by high strength steel structure in hollow tube diameter 35/38/48mm with screw thread. Usually used at the bottom of scaffolding system verticals, it makes the whole scaffold system more stable. More >>

High Load Carrying Capacity Scaffolding Hollow Adjustable Base Jack
Name	Base Jack Type	Hollow Adjustable Base Jack Size		Hollow Adjustable Base Jack Weight (KG)
Name	Base Jack Type	Screw Rod (MM)	Base Plate (MM)	Hollow Adjustable Base Jack Weight (KG)
Hollow Adjustable Base Jack	Hollow	354600	1501505	3.32
Hollow Adjustable Base Jack	Hollow	384600	1501505	3.50
Hollow Adjustable Base Jack	Hollow	484600	1601606	4.41
Hollow Adjustable Base Jack	Hollow	355400	1501505	2.96
Hollow Adjustable Base Jack	Hollow	355500	1501505	3.33
Hollow Adjustable Base Jack	Hollow	355600	1501505	3.70
Hollow Adjustable Base Jack	Hollow	385500	1501505	3.52
Hollow Adjustable Base Jack	Hollow	385750	1501505	4.55
Hollow Adjustable Base Jack	Hollow	455400	1501505	3.46
Hollow Adjustable Base Jack	Hollow	455500	1501505	3.95
Hollow Adjustable Base Jack	Hollow	455600	1501505	4.44
Specifications can be customized according to requirements

Scaffolding Solid Adjustable Base Jack

Scaffolding solid adjustable screw base jack with base plate in 150*150*5mm or customized, screw rod made from high strength steel rod structure with casting or forging scaffolding jack nut for scaffolding system as ringlock scaffolding system, cuplock scaffolding system, kwikstage scaffolding system, haki scaffolding system, tube&fitting scaffolding system and others. More >>

High Load Carrying Capacity Scaffolding Solid Adjustable Base Jack
Name	Base Jack Type	Solid Adjustable Base Jack Size		Solid Adjustable Base Jack Weight (KG)
Name	Base Jack Type	Screw Rod (MM)	Base Plate (MM)	Solid Adjustable Base Jack Weight (KG)
Solid Adjustable Base Jack	Solid	30*400	1201205	3.10
Solid Adjustable Base Jack	Solid	30*600	1201205	4.07
Solid Adjustable Base Jack	Solid	32*400	1201205	3.39
Solid Adjustable Base Jack	Solid	32*600	1201205	4.50
Solid Adjustable Base Jack	Solid	34*400	1201205	3.70
Solid Adjustable Base Jack	Solid	34*600	1201205	4.95
Solid Adjustable Base Jack	Solid	35*400	1501505	4.17
Solid Adjustable Base Jack	Solid	35*500	1501505	4.84
Solid Adjustable Base Jack	Solid	35*600	1501505	5.51
Solid Adjustable Base Jack	Solid	38*500	1501505	5.48
Solid Adjustable Base Jack	Solid	38*750	1501505	7.48
Solid Adjustable Base Jack	Solid	45*400	1501505	6.04
Solid Adjustable Base Jack	Solid	45*500	1501505	7.18
Solid Adjustable Base Jack	Solid	45*600	1501505	8.32
Specifications can be customized according to requirements

Scaffolding Adjustable U-head Jack

Scaffolding adjustable U-head jack is designed for use in combination with adjustable system supports. The main function of the Scaffolding adjustable U-head jack is to hold the wooden beam in place. The Scaffolding adjustable U-head jacks we offer are of high quality standard, and these have a pure zinc plated finished, thus adding to its gloss. These are all adjustable and therefore the greatest advantage of these products. This was done under the scrutiny of experts, thus ensuring superior performance. More >>

High Load Carrying Capacity Scaffolding Adjustable U-head Jack
Name	U-head Jack Type	Adjustable U-head Jack Size		Adjustable U-head Jack Weight (KG)
Name	U-head Jack Type	Screw Rod (MM)	Base Plate (MM)	Adjustable U-head Jack Weight (KG)
Solid Adjustable U-head Jack	Solid	30*400	15012050*5	3.11
Solid Adjustable U-head Jack	Solid	30*600	15012050*5	4.08
Solid Adjustable U-head Jack	Solid	32*400	15012050*5	3.40
Solid Adjustable U-head Jack	Solid	32*600	15012050*5	4.51
Solid Adjustable U-head Jack	Solid	34*400	15012050*5	3.71
Solid Adjustable U-head Jack	Solid	34*600	15012050*5	4.97
Solid Adjustable U-head Jack	Solid	38*500	15012050*5	5.18
Solid Adjustable U-head Jack	Solid	38*750	15012050*5	7.17
Hollow Adjustable U-head Jack	Hollow	303.0400	15012050*5	1.98
Hollow Adjustable U-head Jack	Hollow	303.0600	15012050*5	2.38
Hollow Adjustable U-head Jack	Hollow	323.0400	15012050*5	2.04
Hollow Adjustable U-head Jack	Hollow	323.0600	15012050*5	2.47
Hollow Adjustable U-head Jack	Hollow	343.0400	15012050*5	2.04
Hollow Adjustable U-head Jack	Hollow	343.0600	15012050*5	2.47
Hollow Adjustable U-head Jack	Hollow	384.0500	15012050*5	2.86
Hollow Adjustable U-head Jack	Hollow	384.0750	15012050*5	3.70
Specifications can be customized according to requirements

Scaffolding Base Plate

Scaffolding base plate is a type of footplated for scaffold system and tube&clamp scaffolding. The spigot for scaffolding base plate can be made from round rod or scaffolding hollow tube. The size of scaffolding base plate can be divided into 50mm, 110mm, 120mm, 140mm, 150mm and so on according to EN74 / BS1139 standard and can customize according to your requirements. Depending on the usage and size of spigot, scaffolding base plate can be in insert type and socket type. More >>

High Load Carrying Capacity Scaffolding Base Plate
Name	Base Plate Type	Scaffolding Base Plate Size		Scaffolding Base Plate Weight (KG)
Name	Base Plate Type	Rod / Tube (MM)	Base Plate (MM)	Scaffolding Base Plate Weight (KG)
Scaffolding Base Plate	Rod	12*80	1201205	0.62
Scaffolding Base Plate	Rod	12*100	1201205	0.63
Scaffolding Base Plate	Rod	12*80	1201206	0.73
Scaffolding Base Plate	Rod	12*100	1201206	0.74
Scaffolding Base Plate	Rod	12*80	1501505	0.94
Scaffolding Base Plate	Rod	12*100	1501505	0.95
Scaffolding Base Plate	Rod	12*80	1501506	1.11
Scaffolding Base Plate	Rod	12*100	1501506	1.13
Scaffolding Base Plate	Tube	353.050	1201205	0.67
Scaffolding Base Plate	Tube	363.050	1201205	0.69
Scaffolding Base Plate	Tube	384.050	1201206	0.85
Scaffolding Base Plate	Tube	384.0100	1201206	1.02
Scaffolding Base Plate	Tube	353.050	1501505	1.01
Scaffolding Base Plate	Tube	363.050	1501505	1.02
Scaffolding Base Plate	Tube	384.050	1501506	1.23
Scaffolding Base Plate	Tube	384.0100	1501506	1.40
Specifications can be customized according to requirements

How to install base jack to level the floor

If the building is built on expansive soil, therefore, with regular movement, a scaffold screw jack can replace concrete piers between solid wood columns and girders that support the floor joists.

A scaffolding base jack is a metal support column that can be adjusted to make the floor level. It consists of two heavy steel tubes, one inside the other. The inner tube is threaded and adjusted up and down by turning a large wing nut. Screw jacks are fixed with nails to the underside of the girder and to wooden blocks on top of the concrete wharf.

Here’s how to install a base jack

1. In this process a hydraulic jack and a short column are used to support the floor.

2. Use hammers, nail pullers and sledgehammers to remove existing supporting posts and nails.

3. Place the scaffolding adjustable screw jacks under the beams and the wooden blocks on the concrete piers in the middle.

4. Adjust the scaffolding screw base jack so that the top and bottom panels are flush with the top and bottom wood surfaces.

5. Drive the 16 -penny nail through the hole in the plate and into the wooden frame.

6. Lower the hydraulic jack and transfer the floor load to the new scaffolding screw jack.

7. Adjust the adjustable base jack scaffold up and down to make the surface smooth.