LFA63H2-7X/FDR

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth LFA63H2-7X/FDR (R900955776) is a sophisticated way cartridge valve designed for seamless integration into compact block systems. This valve offers versatile applications, allowing it to be used for pressure, directional, and throttle functions or a combination thereof. The efficiency of this valve is enhanced by its ability to be sized according to the flow requirements of different actuator paths, leading to cost-effective solutions when implementing multiple functions. The model features a modular composition that includes a control cover and an installation kit. The control cover houses the necessary control bores and may include additional functions such as stroke limitation, hydraulically controlled directional seat valves, or shuttle valves depending on the overall function required. Furthermore, it can accommodate electrically operated directional spool or seat valves. The installation kit comprises components such as a bushing, ring (up to NG), valve poppet with optional damping nose configurations, and a closing spring. One of the unique capabilities of the LFA63H2-7X/FDR is its pressure-dependent functionality which creates three distinct pressurized areas: A1, A2, and A3. These areas are crucial in determining the operational dynamics of the valve. Area ratios between A1 : A2 can either be 0.7:1 or 2:1 depending on the version of the valve in use. This difference in area ratios leads to variable annulus areas A2 which influence the force direction and ultimately determine the spool position within the way cartridge valve. In operation, areas A1 and A2 are influential in opening directions while area A3 combined with spring action dictates closing direction. The resulting force's direction determines whether the spool allows passage from port A to B or vice versa. Additionally, this model provides leak-free blocking when pilot oil pressurizes area A3 from channel B or via an external supply without leakage. Moreover, this specific model includes features like remote control port capability and stroke limitation options that enhance its functionality for various hydraulic system requirements.