ENERPAC - Industrial Tools Page 13
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The Enerpac Lightweight Aluminum Cylinders ▼ Shown: RAC, RACL, RACH, and RAR RA Series Capacity: 10 - 150 tons Stroke: 1.97 - 9.84 inches Maximum Operating Pressure: 10,000 psi Think Safety Manufacturer’s rating of load and stroke are maximum safe limits. Good practice encourages using only 80% of these ratings! 80% Page: 400 Aluminum vs. Steel • Lightweight, easy to carry and position to allow a higher cylinder capacity-to-weight-ratio • Non-corrosive by design, aluminum has always been a good material for use in many caustic environments • Composite bearings on all moving surfaces guarantee NO metal-to-metal contact, to resist side loads and increase cylinder life Removable Hardened Saddle protects plunger from being damaged by abrasive surface contact. Stop-Ring on all models absorbs eccentric loading and prevents plunger over-extension. Aluminum cylinders, while offering the most lightweight solution also have some unique limitations due to material properties. It differs from steel in that it has a lower finite fatigue life. Aluminum cylinders should NOT be used in high-cycle applications such as production. These cylinders are designed to provide 5000 cycles at their recommended pressure. This limit should not be exceeded. In normal lifting and many maintenance applications, this should provide a lifetime of use. Composite Bearing material to prevent metalto-metal contact, reducing side-load issues and increasing life. Hard-coated Plunger and Base resist wear and prevent galling. Steel Base Plate 7075-T6 Aluminum Alloy Components for maximum strength and minimum weight. Plunger Return Spring on all single-acting models for prompt cylinder return. Composite Bearing material to prevent metalto-metal contact, reducing side-load issues and increasing life. Steel Base Plate protects cylinder base from abrasive surfaces and load induced damage. The steel base plate protects the cylinder base from damage, it should not be removed. The base holes in these aluminum cylinders are designed for securing the steel base plate. They will not withstand the capacity of the cylinder. Do not use the base holes in these aluminum cylinders to attach any device to the cylinder. 11
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