オックスジャッキ List of Products and Services

We would like to introduce our double twin jack, the '4RM/6RM'. This model adopts a combined system of ram-operated jacks (R jacks) and cylinder-operated jacks (C jacks). With our developed control system, stable continuous operation can be achieved. Additionally, the capacity can reach tens of thousands of kN by using multiple jacks, and the movement speed is determined by the discharge rate of the electric pump unit and the use of multiple jacks, with the maximum operational speeds being 2m/min for the 4RM and 1m/min for the 6RM. 【Features】 - Stable continuous operation can be achieved using our developed control system. - The jacks that are always opposing each other can perform reverse operations, allowing for continuous operation. - Each operating unit is equipped with a special fixation device that enables automatic fixation and release. - When retracting the R jack, the two tension forces are equalized (6RM). - The system incorporates numerous interlock circuits, ensuring high safety for both manual and automatic operations. *For more details, please refer to the PDF document or feel free to contact us.

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The multi electric pump unit "ESP-11" allows for remote operation of the pump while monitoring the jack using a remote control box. It enables centralized control and operation of multiple pump units, and the sensors within the pump allow for the confirmation of displacement data and load data. With four synchronized outlets that discharge the same amount, it can accommodate various applications such as jacking up, lateral movement, feeding, and lifting. 【Features】 ■ Centralized control and operation of multiple pump units ■ Confirmation of displacement data and load data via sensors within the pump ■ Four synchronized outlets that discharge the same amount ■ Capable of handling various applications ■ Remote operation of the pump while monitoring the jack using a remote control box *For more details, please refer to the PDF document or feel free to contact us.

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• Monitoring and Control Equipment
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The PC steel bar tension jack "OX・PW Series" is specially designed and manufactured for the tensioning work of PC steel bars, which are an important part of the PC well construction method. While performing tensioning and nut tightening operations, the elongation of the PC steel bar is measured with a counter, allowing for the management and execution of stress introduction into the PC steel bar. The counter displays 2.0 or 3.0 mm for each rotation of the nut, accurately counting the elongation. Additionally, we also handle the double-acting hydraulic center hole jack "SLP Series," which is used for various stress introduction works such as PC bridges, piles, wells, prefabricated structures, as well as for lifting, lowering, and horizontal movement of heavy objects. 【Features】 ■ While performing tensioning and nut tightening operations, the elongation of the PC steel bar can be measured with a counter, allowing for the management and execution of stress introduction into the PC steel bar. ■ The counter displays 2.0 or 3.0 mm for each rotation of the nut, accurately counting the elongation. ■ The power source uses a DC 3.6V lithium battery, allowing for continuous use for 3 months. ■ Approximately 5 minutes of auto-off function. *For more details, please refer to the PDF document or feel free to contact us.

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The rail clamp jack is used for the purpose of moving heavy objects on the rail. In combination with the JTP, it can be used for both pushing and pulling. It has a built-in fixing device that clamps the rail with the receiving seat and clamp fittings, providing reaction force. Additionally, we also offer the H steel clamp jack 'HC series,' which clamps heavy objects on H steel rails to take reaction force and moves them by pushing and pulling in combination with the horizontal jack JTP. 【Features】 ■ Used for moving heavy objects on the rail ■ Built-in fixing device ■ Clamps the rail with the receiving seat and clamp fittings, providing reaction force ■ Usable for both pushing and pulling in combination with the JTP *For more details, please refer to the PDF document or feel free to contact us.

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The pushing force for bridge girders using the SB series pushing-out device is sufficient at a minimal value of about 1/20 to 1/10 of the total weight of the bridge girder, thanks to the use of non-friction plates. The pushing-out operation for the bridge girders can be entirely controlled hydraulically, simplifying the work and allowing for centralized control. It can also be used for horizontal movement of heavy objects, such as prestressed concrete bridges, and its utility is extremely broad. To operate this device, it is used in conjunction with hydraulic jacks and hydraulic pumps for loading. 【Features】 ■ The pushing force is sufficient at a minimal value of about 1/20 to 1/10 of the total weight of the bridge girder. ■ All pushing-out operations for the bridge girders can be performed with hydraulic control. ■ Simplifies the work and allows for centralized control. ■ Can be used for horizontal movement of heavy objects, such as prestressed concrete bridges, with extremely broad utility. *For more details, please refer to the PDF document or feel free to contact us.

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This product is a jack that continuously pulls the stay cables of cable-stayed bridges and extradosed bridges without damaging their coverings, using a center hole jack. Operators can control the jack while monitoring it from a short distance using a lightweight control panel. An automatic rotation device is installed on the nut of the tension rod, allowing for safe operation. Additionally, the pulling jack is available in five capacities: 3,000 kN, 4,000 kN, 5,000 kN, 6,000 kN, and 8,000 kN. 【Features】 ■ Continuously pulls stay cable coverings without damage ■ Allows operation while monitoring the jack from a short distance with a lightweight control panel ■ Equipped with an automatic rotation device on the tension rod nut for safe operation ■ Available in five pulling jack capacities *For more details, please refer to the PDF document or feel free to contact us.

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Our company's technology, which has a proven track record in civil engineering jacks, is consolidated in the "Jacking Hoist," which excels in lifting and lowering various heavy objects and in pulling operations. The center hole type hydraulic jack is equipped with hydraulic rotating nuts at the top and bottom, through which a fully threaded rod connected to heavy objects passes, featuring a mechanism where the hydraulic rotating nut and the fully threaded rod engage with threads. As a result, it enables safe and reliable installation work for lifting and lowering heavy objects and pulling operations. 【Features】 <Ensuring Safety> ■ The hydraulic rotating nut mounted at the bottom of the jacking hoist follows the rod that moves with the jack stroke. ■ In the event of an oil leak or other accidents, the heavy object remains stationary at its current position due to the screw function (nut lock), holding the load. ■ During operation, emergency stops and automatic stops also ensure that the nut lock state remains stationary at the current position, holding the load. ■ A spherical seat is incorporated at the bottom of the jack to automatically align with changes in the lifting point, allowing for safe use. *For more details, please refer to the PDF document or feel free to contact us.

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The device uses PC steel wire for the suspension material and employs a split conical natural bite-type wedge shape as the holding mechanism to secure the load of the PC steel wire. It performs lift-up and down operations through the extension and contraction of the jack. The lift-up and down distance is unlimited depending on the length of the suspension material used. Each center hole jack at the suspension points is fundamentally configured with a one-to-one electric pump unit, ensuring that the speed remains the same regardless of the number of suspension points or the magnitude of the reaction force. In cases with multiple suspension points, remote operation can be performed while monitoring the jack's operating status via a remote operation box or a centralized control panel. 【Features】 ■ Uses PC steel wire for the suspension material ■ Performs lift-up and down through the extension and contraction of the jack ■ Unlimited lift-up and down distance depending on the length of the suspension material used ■ Speed remains the same regardless of the number of suspension points or the magnitude of the reaction force ■ Remote operation can be performed while monitoring the jack's operating status via a remote operation box or a centralized control panel *For more details, please refer to the PDF document or feel free to contact us.

• Work tools

We would like to introduce our "Load Displacement Automatic Control System." This system automates the jack control for lifting and lowering heavy objects, allowing for precise management of point discrepancies down to a minimum of 0.01mm, even for heavy objects with poor load balance, enabling highly accurate lifting and lowering. Moreover, in recent large-scale underpinning projects, there has been a demand for advanced construction precision and safety management, leading to the advancement of automated jack control. For projects with high difficulty, please consult us. Our specialized staff will assist you. 【Features】 ■ Automation of jack control for lifting and lowering heavy objects ■ Management of point discrepancies down to a minimum of 0.01mm, even for heavy objects with poor load balance ■ Capability for highly accurate lifting and lowering *For more details, please refer to the PDF materials or feel free to contact us.

• Automatic Control Equipment
• Monitoring and Control Equipment
• Power distribution and control panels

The "RM type" is a standard type jack that is connected to a hydraulic pump with two hydraulic hoses for pushing and returning (double-acting). The extension and retraction of the hard chrome-plated ram (piston) can be easily operated with the switching valve of the hydraulic pump, allowing for quick remote operation. Additionally, the return side of the OX brand double-acting hydraulic jack is equipped with a safety valve to prevent abnormal pressure generation. 【Features】 ■ Standard type ■ Connected to a hydraulic pump with two hydraulic hoses for pushing and returning ■ The extension and retraction of the ram (piston) can be easily operated with the switching valve of the hydraulic pump ■ Quick remote operation is possible ■ Equipped with a safety valve to prevent abnormal pressure generation *For more details, please refer to the PDF document or feel free to contact us.

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This catalog is a comprehensive catalog of OX Jack Co., Ltd., a specialist that supports the progress of large-scale projects through the leasing and rental of jacks for civil engineering and construction. We offer jacks with capacities ranging from 100 kN to 12,000 kN to accommodate various applications, such as lifting, suspending, moving, and securing bridges and various structures weighing tens of thousands of tons in civil engineering projects. [Contents] ■ Hydraulic jacks, special jacks & accessories ■ Pumps & accessories ■ Mechanical jacks ■ Various measurement and control devices ■ Various construction examples *For more details, please download the PDF or feel free to contact us.

• Roller Jack