Single-acting Hollow (Center-hole) Jack

	It is widely used in construction, bridge building, highway and railway construction, power station construction, equipment lifting, and mechanical disassembly. The hollow jack has both lifting and pulling functions, and the central hole allows cables, steel bars, and other items to pass through. The central hole can be processed according to user requirements. Customized hollow jacks with different specifications and stroke lengths can be made according to the user's needs. Hydraulic stations and single-acting manual oil pumps are available as optional accessories.
Model Load Capacity (T) Working Stroke (mm) Working Pressure (MPa) Height (mm) Extension Height (mm) Outer Diameter (mm) Center Hole Diameter (mm) QKD10/60 10 60 1-63 208 268 108 32 QKD20/60 20 60 220 280 121 34 QKD30/70 30 70 229 299 121 34 QKD50/90 50 90 270 360 168 45
Three types of connectors are available: straight connector, leak-proof connector, and quick connector. The user can choose the type, and the length of the high-pressure hose is selectable.