The new RKP-II second-generation radial piston pump from Moog provides OEMs and end users with a number of important benefits, particularly in relation to noise, durability, efficiency and service life.
More pistons, modified suction porting and a redesigned stroke ring enhance fluid delivery, decrease flow pulsation, increase life and significantly lowers noise levels.
Initially available in 63, 80 and 100cc/revolution variants, the pump's radial design offers many advantages compared to axial piston pumps, such as low output pressure pulsation. In most model sizes, an increase in the number of pistons from seven to nine reduces the piston diameter, which lowers the affect of dynamic transverse forces on the housing. This means the RKP-II is less subject to piston wear and detaching slipper pads. Volume, flow and pressure pulsations on the high-pressure side are also noticeably lower.
The RKP-II, with its completely re-engineered power train, is suitable for integration into a wide variety of machines and installations. According to Moog, these include applications involved with tool production, plastic and metal forming, injection and pressure casting, rubber processing, test-bench construction and mining.
It is the pump's design that makes it attractive for noise-sensitive stationary hydraulics applications (the noise intensity for sizes 63 and 80 is <70dB at any working point). In addition, it is designed to be highly resistant to wear and, as a result, is more tolerant of negative suction pressure. This is due to all the parts associated with fluid flow dynamics being hardened - which helps to eliminate pitting caused by cavitation.
Approved for use with a variety of operating fluids, the RKP-II has a number of control options to guarantee optimum flexibility - no matter what the application. It has significantly reduced maintenance requirements and its virtually unlimited storage life addresses many issues related to stocking spares, which is especially important for manufacturing environments that are operating using modern lean principals.
The introduction of a larger suction port (SAE 2inch, 3000psi) together with an improved flow path in the housing and new porting in the journal means the RKP-II can offer extremely robust suction behaviour with optimum intake, less pressure loss along the suction path, lower flow noise and reduced risk of cavitation.
For more information, visit www.moog.com/industrial
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