Posted to News on 5th Jan 2007, 20:09
Low-noise hydraulic pumps offer durability and efficiency
Designed for use in high-specification stationary hydraulics applications, the new RKP-II second-generation radial piston pump from Moog provides OEMs and end users with a number of important benefits. Of particular interest are those related to noise, durability, efficiency and service life.
An increased number of pistons, modified suction porting and redesigned stroke ring enhances fluid delivery, decreases flow pulsation, increases life and significantly lowers noise levels.
Initially available in 63, 80 and 100cc-per-revolution variants, its 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, lowering the affect of dynamic transverse forces on the housing. This means the RKP-II runs 'virtually stress-free' and 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 those involved with tool production, plastic and metal forming, injection and pressure casting, rubber processing, test-bench construction and mining.
Noise at Work Directive
It is the pump's design that makes it attractive for these noise-sensitive stationary hydraulics applications - the noise intensity for sizes 63 and 80 is
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.
With Moog being a leading manufacturer of servo-hydraulic and servo-electric drive systems for industrial applications, its customers benefit from the company's extensive knowledge of machine integration and system design challenges.
