Description
The US Army is seeking a contractor to provide a Shaft Assembly, Flex, with a part number of 11463732. The assembly will be used to support depot manufacturing and repair operations for the PATRIOT system. The contractor must provide a Certificate of Conformance and ensure that the material meets the government's requirements. The shaft assembly must be capable of 8,000,000 revolutions minimum at a torsional load of 122 lb/inch while curved through a 25.0 inch radius without failure or evidence of damage.
Key requirements include:
• The shaft assembly must have a core made of multi-layer, helically wound, steel wire, left-hand lay casing, and neoprene-covered, corrosion-resisting steel wire.
• The couplings must be made of aluminum alloy, 2024-T4, per SAE-AMS-QQ-A-225/6.
• The ferrules must be made of CRES alloy, bar, UNS30300 (303), condition A (annealed), ASTM A582.
• The finish must be passivate, ASTM A967, lot testing required, practice optional or in accordance with SAE-AMS-2700, class 2.
• The minimum operating radius must be 8.0 inches, and the maximum operating load at 1000 RPM must be 122 inch-pounds either direction at a 25-inch bend radius.