4.5 Ton Hydraulic Load Capacity : The hydraulic jack has a 4.5 ton load capacity, and the rated compression force is 1 ton. Perfectly suited for spring disassembly and shock absorber maintenance. Strut Spring Compressor 4.5 Ton / 9920 LBS Hydraulic Jack 1 Ton Rated Compression Force Auto Strut Coil Spring Compressor.