Hydraulic and Automation Warehouse (HAW) recently expanded its range of Intertraco hydraulic hose with the addition of three new wire spiral hydraulic hoses. The additions to the range consist of the Intertraco 4ST and 4ST+, each with a four wire spiral, and the 6ST which consists of a six wire spiral. The 4ST is designed for high pressure hydraulic systems, for use with mineral and biological hydraulic oils, polyglycol base oils, water-oil emulsions and water. Both the 4ST+ and 6ST variants have the same features, but for high pressure hydraulic systems with extreme high pressure peaks. Used mainly on earth moving machines and underground mining machines, all three hoses have a hydraulic oil temperature range of -40 to 121°C, with occasional peaks up to 125°C.
The hoses are made of synthetic rubber tube, either four or six wire spirals as denoted by the hose name, and an abrasion-resistant synthetic rubber cover which is MSHA flame retardant approved. Internal hose diameter on the 4ST range is from 16 to 50 mm with working pressure ranging from 250 to 350 bar and bend radius from 100 to 315 mm. The 4ST+ has internal hose diameter ranging from 10 to 30 mm, working pressure varying from 400 to 450 psi and bend radius from 80 to 250 mm. Internal hose diameter on the 6ST measures from 30 to 50 mm, working pressure is from 400 to 450 bar, while the bend radius is from 260 to 395 mm.
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