Jack Product List and Ranking from 43 Manufacturers, Suppliers and Companies

The number of adoptions is increasing for rack-type jacks (without screws) with load-holding features.

No need for brakes or stoppers! You can work or conduct experiments while maintaining the position even after stopping the lift. Unlike screws, it offers lightweight operability and is lightweight, smart, and compact!

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast ascent and descent speed due to its high efficiency, making it easy to operate. It is equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a revolutionary jack. In emergencies, it can operate and maintain loads even without a power source. It is available in a manual type with a rated thrust load of 50 kgf. Additionally, it has a large stroke, making it a highly versatile rack jack and linear actuator, suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted as a lab jack or table lifter, it can hold its position while loaded, and when the handle is turned again, it resumes ascent and descent without any motion delay. (For more details, please refer to our website or catalog.) The basic surface treatment features a black Teflon coating that is resistant to rust. *For more information, please visit our official website or feel free to contact us.

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Disaster Response Jack: Can be raised and lowered manually or with a rechargeable electric tool, even without power!

Elevate and stop the work at the desired position to hold the load! This is a disaster prevention rack jack that can be operated manually or with a commercially available electric screwdriver. It can be used even during a power outage!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tools such as drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and by turning the handle again, it can resume raising and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation for load retention compared to screw type! Compact rack-style jack for labs and research facilities.

No need for brakes or stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster elevation speed! Additionally, it can save space!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by a power tool drill driver. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and once the handle is turned again, it resumes lifting and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation with load holding compared to screw-type! Compact rack jack for semiconductor devices.

No need for brakes or stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster elevation speed! Additionally, it can save space!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Additionally, its lightweight and compact design allows for space-saving, making it widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tool drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster prevention, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position with the load applied, and by turning the handle again, it can resume lifting and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation compared to screw-type for load retention! Compact rack jack for machinery use.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed! Additionally, space-saving!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by a power tool drill driver. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and once the handle is turned again, it resumes lifting and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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[For vacuum devices and technology] Lightweight operation for load retention! Compact rack-type jack.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tool drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and in defense and military applications. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold the position with the load applied and resume lifting seamlessly by simply turning the handle again. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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[For Medical Devices and Manufacturing] Lightweight operation with load retention! Compact rack-type jack.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tool drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications without a power supply. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. Recently, more customers are considering it as an alternative to small hydraulic jacks, taking environmental issues into account. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Railway-related use: Load retention with lighter operation than screw type! Compact rack-type jack.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tools such as drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster prevention and energy-saving measures without a power supply, as well as in defense and military applications. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. Recently, more customers have been considering it as an alternative to small hydraulic jacks, taking environmental issues into account. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Disaster prevention and disaster response with lighter operability than screw-type, load retention! Compact rack jack.

No need for brake stoppers! Self-locking at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers significantly faster lifting and lowering speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, we also offer electric models (SLE series) that can be driven by power tool drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster prevention, energy-saving measures, and defense/military applications without a power source. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. Recently, more customers are considering it as an alternative to small hydraulic jacks, taking environmental issues into account. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight load holding with easier operation than screws! Compact rack jack for plants.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed! Additionally, it can save space!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can restart from any position without releasing the brake, whether in upward or downward rotation. Its lightweight and compact design allows for space-saving, making it widely adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tool drill drivers. The surface features a standard black Teflon coating that is resistant to rust. It can be widely used for disaster prevention and energy-saving measures without a power source, as well as in defense and military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position with the load applied, and by turning the handle again, it can resume raising and lowering without any motion. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation for load retention, lighter than screws! Compact rack jack.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed! Additionally, space-saving!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Additionally, its lightweight and compact design allows for space-saving, making it widely adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tool drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and by turning the handle again, it can resume lifting and lowering without any motion. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation with load retention compared to screw-type for defense and military use! Compact rack-style jack.

No need for brake stoppers! Self-locking at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Additionally, its lightweight and compact design allows for space-saving, and it has been adopted and well-received in various fields. Unlike conventional screw jacks, the rack-type jack offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by a power tool drill driver. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster prevention and energy-saving measures without a power supply, as well as in defense and military applications. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. Recently, more customers are considering it as an alternative to small hydraulic jacks, taking environmental issues into account. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Safety measures: Load retention with lighter operability than screw type! Compact rack-type jack.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster elevation speed, and space-saving achieved!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in forward or reverse rotation (up or down). Additionally, due to its lightweight and compact design, it saves space and has been adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tools such as drill drivers. The surface features a standard black Teflon coating that is resistant to rust. It can be widely used for disaster prevention, energy-saving measures, and in defense and military applications without a power supply. It is also suitable for universities, research institutes, testing facilities, and explosion-proof measures. Recently, more customers have been considering it as an alternative to small hydraulic jacks, taking environmental issues into account. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation for load retention compared to screw type! Small rack jack for machine work and processing.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed! Additionally, it can save space!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the stopped position while raising and lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Additionally, its lightweight and compact design allows for space-saving, and it has been widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by a power tool drill driver. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and by turning the handle again, it can resume lifting and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Explosion-proof measures: Load retention without power! Inline reducer, winch, jack.

Self-locking winches, rack jacks, and reducers require no brakes. Ideal for work in locations without power! Lightweight and compact with multiple applications!

We have developed numerous applied products featuring a unique load-holding function with a deceleration mechanism (shoji-lock), which have been well received by our customers. <Features of shoji-lock products> - When rotation is applied from the input side, the output side decelerates and transmits power, but rotation is not possible from the output side = self-locking function. This means that no brake is needed, and the load can be held at the desired position. - Compared to worm gear reducers with the same self-locking function, it is highly efficient. Additionally, while the worm has input and output axes that are orthogonal, our design has the input and output shafts aligned in a straight line (in-line), making it considerably more compact and space-saving, as well as lightweight. - Unlike ratchets or one-way clutches, it can hold the load at any position when motion is stopped, regardless of the direction of rotation. Furthermore, there is no ratchet noise, making it suitable for use in quiet environments. - It has a basic sealed structure (IP65) and is maintenance-free. - We offer a variety of applied products, including gear reducers that utilize this self-locking mechanism, winches, and linear actuators (rack jacks). - Stainless steel versions are also available for each model, suitable for cleanroom applications. *For more details, please feel free to contact us.

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation compared to screws for load retention! Compact rack jack for logistics applications.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed! Additionally, it allows for space-saving!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising or lowering the workpiece. Furthermore, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Additionally, its lightweight and compact design allows for space-saving, making it widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tools such as drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster response, explosion prevention, energy-saving measures, and defense or military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position with a load applied, and by turning the handle again, it resumes lifting or lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight operation with load retention compared to screw-type! Compact rack jack for automotive factories.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operability than screw types, faster lifting speed! Additionally, it can save space!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising and lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike traditional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, there are also electric models (SLE series) that can be driven by power tools like drill drivers. The surface comes standard with a black Teflon coating that is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold the position while loaded, and by turning the handle again, it can resume raising and lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Lightweight load holding with operation easier than screws! Compact rack jack for the aerospace industry.

No need for brake stoppers! Self-locks at the stopped position during work elevation! Lighter operation than screw types, faster lifting speed! Additionally, space-saving!

This is a compact and lightweight rack-type jack (linear actuator) equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load in place while raising or lowering the workpiece. Additionally, it can be restarted from any position without releasing the brake, whether in the upward or downward direction. Due to its lightweight and compact design, it saves space and has been widely adopted and well-received in various fields. Unlike conventional screw jacks, the rack type offers overwhelmingly faster ascent and descent speeds, characterized by its high efficiency and ease of operation. In addition to the manual-only (SLM series) models, we also offer electric models (SLE series) that can be driven by a power tool drill driver. The surface is standardly coated with black Teflon, which is resistant to rust. It can be widely used for disaster preparedness, energy-saving measures, and defense/military applications. It is also suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted on a lab jack or table lifter, it can hold its position while loaded, and by turning the handle again, it resumes lifting or lowering without any motion delay. It is compatible with commercially available round rack rods (manufactured by KHK). (Rack rods are not included.)

Company：庄司歯車エンジニアリング
Price：Other

Small baggage lift
Jack

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Underpinning Renovation Work | A Plan for Jacking Up Detached Houses to Restore Client Trust

A construction plan for jack-up work on single-family homes to maintain the residents' living conditions. This is a site management guideline for contractors to promptly respond to complaints and defects while the owner is still residing in the home.

This is a technical and management guide for house lifting construction plans specifically designed for construction companies and house manufacturers, aimed at maintaining the residents' quality of life. It comprehensively covers the process management guidelines for professionals to correct building tilt in the shortest time possible while residents continue to live in the property, without imposing the burden of moving or temporary housing on the owners when issues of differential settlement are discovered after handover. Based on ground investigation data, it accurately combines the use of existing columns, steel pipe jacking methods, and pressure slab methods to detail the process of returning the entire building to a level position without distortion. It includes a checklist of management considerations unique to occupied sites, such as attention to noise reduction, selection of low-noise and low-vibration equipment, and dust prevention measures. This practical document is essential for builders to restore trust and address warranty issues, covering everything from dialogue techniques to alleviate the psychological stress of owners, to various procedural steps for reattaching ground guarantees and insurance application processes.

Company：ジオテック
Price：Other

Renovation and repair methods
Pile and foundation work
Other earthworks, foundation works, and exterior floors
Jack

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Subsidance Correction Work | House Jacking-Up Construction Plan Without Stopping Lifelines

A plan for jack-up construction of a single-family home to maintain the residents' living conditions. The building's tilt will be precisely corrected in three dimensions using lasers while the water and gas systems remain operational.

This is a cutting-edge engineering document that focuses particularly on technical management and safety within the house-jacking construction plan aimed at maintaining the residents' living conditions. It encompasses a special "pipe-following" construction process that safely corrects differential settlement while residents continue to live in the house, without ever interrupting essential lifelines such as city gas, water supply and drainage, electricity, and internet during the construction period. By controlling multiple hydraulic jacks with a computer and monitoring the building's behavior in real-time using a three-dimensional laser level measuring device, the lifting is performed with millimeter precision, preventing undue deformation stress on the structure. The on-site material storage area is optimized for space, and by adopting low-noise and low-vibration systems such as electric hydraulic pumps and soundproof generators, it perfectly prevents neighborhood troubles during construction in densely populated areas. This technical specification document promises the highest safety quality, explaining methods to reinforce foundation concrete cracks with carbon fiber sheets that possess ten times the strength of steel plates.

Company：ジオテック
Price：Other

Renovation and repair methods
Residential foundations
Consulting companies
Jack

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Settlement correction work | Settlement cracks in the mat foundation addressed with SWS investigation and partial jacking.

We will conduct pinpoint analysis of partial subsidence and cracks in the foundation using SWS investigation! We will rationally restore it through targeted jack adjustments and foundation reinforcement, eliminating waste.

This proposal is a settlement correction and structural reinforcement solution that effectively repairs partial settlement of the mat foundation and structural cracks without incurring excessive construction costs. By conducting a preliminary SWS (Screw Weight Insertion) test, we can pinpoint the specific soft layers or settlement areas causing the subsidence. By applying a "partial jack-up method" that selectively lifts and corrects only the necessary areas without jacking up the entire building, we minimize construction equipment and personnel, significantly reducing construction costs and time. Furthermore, for structural cracks in the foundation, we combine high-viscosity epoxy resin injection, carbon fiber sheet application, and additional foundation reinforcement to dramatically enhance the durability and toughness of the foundation structure beyond its original level. After jacking up, we will perform steel pipe pile insertion, pressure plate installation, and mortar filling to completely eliminate the risk of future subsidence recurrence. We provide a rational option that balances cost-effectiveness with reliable safety structures and the preservation of the building's asset value.

Company：ジオテック
Price：Other

Renovation and repair methods
Pile and foundation work
Other earthworks, foundation works, and exterior floors
Jack

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Comparison of Aluminum Gear Support and Hydraulic Support

Easily extendable with an electric screwdriver or wrench! Safe to use even for nighttime or emergency repairs.

The "Aluminum Gear-Type Support (Super SS Jack)" is a jack used for earth retention work that can be easily extended and contracted with an electric screwdriver or wrench, suitable for gas pipe installation and water supply and drainage construction. Unlike hydraulic jacks, it does not stop work on site due to water leaks, pump failures, or freezing. It can be safely used during night work, emergency work, and in cold regions. Additionally, it excels in safety, workability, and maintenance. 【Safety Comparison】 ■ Aluminum Gear-Type Support (Super SS Jack) - Can be installed and removed from the ground using a dedicated work rod - The gear and screw-type extension structure eliminates the risk of contraction ■ Hydraulic Support - Requires connection to a hydraulic pump, making it impossible to install or remove from the ground - There is a risk of contraction due to water leaks *For more details, please refer to the PDF document or feel free to contact us.

Company：Hoshin Co., Ltd.
Price：Other

Sewerage facilities
Earth retaining support
Scaffolding and Support Materials
Jack

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