Post-tensioning system stressed jack mainly used in to tensioning the pc strands/steell wire of the bridge construction. General tonnage of the jacks is based on the anchor's holes to match use . With the electric lift hydraulic jack together use the complete set equipment : anchorage, Electric oil pump,Mixer, Grouting machine,push machine for pc strand/ steel wire . Our post-tensioning system stressed jack tonnage is "22-650 tons, anchor hole is: 2-32 holes. Oil pump is: 3-7.5 kilowatts, the other requirements we can customize. The device can be used widely in post-tensioning operation for immense constructions, prestressed concrete bridges, ground anchorage, marine constructions, foundation anchorage,etc This post-tensioning system stressed jack uses high-strength steel with special process and new sealing technology. Compared with QYC series jack, its structure is compacter, lower weight, shorter axial length, shorter reserving length outside the prestressing steel strand so that it can save a large number of steel strand materials. With a large number of actual construction uses and tests, it proves a good performance, durable service, easy lifting,easy using and easy maintenance. This jack is not applicable to push, lift and drop beams. The oil cylinder ,heading cover(adjusting nut) ,end cover(hold-down ring), front sealing plate,back sealing plate of this jack connect with cross-core socket to form a "motionless body", and the piston of the jack is "motion body", when the hydraulic oil pushes the "motion body" to the right, it begins to tension; When the hydraulic oil pushes the motion body to the left, it is the piston-return after the tension.
Stressing jack is an essential part of post tensioning work. Working with light and versatile stressing tools enables site operators to increase stressing efficiency and productivity. Stressing jacks are designed and manufactured on such principles. With its small, compact and highly efficient design, these post-tensioning system stressed jack and pump can operate in confined spaces. Besides that, Stressing jack can be mix-and-match with any types of anchor configurations. By matching both the Front & Back Plate of the Stressing Jack to corresponding anchor configurations, one Stressing Jack can accomplish the job of stressing a series of different types of anchors. This versatility frees up the additional work for site operator not having to use different stressing jacks for different anchors.
ZB series high pressure electric pump is the power of jack, supporting the use of tension devices with a variety of specialized tonnage jack, upset head device and extrusion machines and other equipment. The post-tensioning system stressed jack is powered by our ZB series high-pressure electric oil pump.