Simson Power Tools' Compact jack em-ploys a closed hydraulic system, which allows the jack to be operated at all angles – including upside down – for lifting, pushing, and pulling operations. Typical applications include stretching cables, rods, bolts, and drawing off of bearings and sleeves.
The system is also suitable for use underwater for repair or maintenance tasks. In this case, the closed hydraulic system protects the jack against corrosion, as the space around the piston is filled with oil, which provides constant lubrication when the piston is pressed down to the bottom of its stroke.
The piston is made of through-hardened ball bearing steel, and the cylinder is manufactured from tempered, high strength, chromium-nickel steel. The cylinder bottom is intentionally over-sized to improve its ability to cope with uneven loading. This also improves its resistance to high temperatures, the company claims. An external screw facilitates setting of the cylinder.
Unlike competing systems, the Compact jack is a single-piece unit, which brings benefits in terms of weight and compactness, the company says. Its low height makes it especially effective in confined area applications, such as positioning of machines, mounting of tools and load tests. The jack is available as standard in a wide range of sizes, ranging from 3.7 kg with a 15-metric-ton handling capacity to 41 kg with a 150-metric-ton handling capacity. For safety purposes, each jack is equipped with a safety valve located on the pump side of the circuit, set to trip at 825 bar. The Compact is designed with a factor of safety of 3 against overloading and of 4 against failure, i.e., breaks.
Simson's Compact jack.
Among its accessories, Simson also offers a tool for separating flange joints for tasks such as gasket or valve change-out operations, all of which can be performed by one person. The tool is connected to a Simson jack with an internal thread, for fitting to a Compact type 1575 or 1575B. Four different wedges with respective openings of 2, 10, 18, and 25 mm are matched to the gap sizes between the flanges. Twelve different, exchangeable pairs of pulling bolts with diameters of 16-50 mm can also be matched to various flange bolt-hole diameters. Weight of the system, including the jack, is 32 kg.
For more information, contact Helen Norberg, Simson Power Tools. Tel: +46 290 230 80, fax: +46 290 244 034, email@example.com, www.simsonpowertools.se.