3 Tonne Maximum Load Capacity. Jcb Contractor and Power Tools. These linked sites are only for your convenience and therefore you access them at your own risk. With safety in mind, the JCB-TH33007 features a built-in safety valve to protect against overloading and exceeding the jack’s capacity, as well as a hydraulic oil by-pass system, which safeguards the ram from over-extension.
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