Selection of Precision Disc Spring in Hydraulic Pump Valve

Selection of Precision Disc Spring in Hydraulic Pump Valve

Product Highlights: Series 001 069 and 001 081 (Nominal Diameter D=22.523mm) – Precision disc spring solutions specifically engineered for core control valve assemblies in high-pressure hydraulic systems.

In complex hydraulic system designs, pressure control valves and flow control valves serve as the "neural hub" of hydraulic circuits, where their performance directly determines system control accuracy and operational safety. These critical components require extremely stringent specifications for force value deviations of internal elastic elements (typically ≤±5%), load attenuation rates during 100,000 cycles (≤3%), and millisecond-level dynamic response speeds. The DIN2093-certified 22.523mm series disc springs, manufactured using German-imported 50CrV4 spring steel materials and precision stamping processes, achieve thickness tolerance control at the 0.02mm level. These springs demonstrate exceptional performance in high-pressure hydraulic applications, significantly enhancing valve body adjustment precision and reliability. Field tests confirm stable control errors within ±0.5% at 16MPa working pressures.

Detailed specifications for a typical product model (using 001 070B as an example) are as follows (compliant with the latest DIN2093-2017 standard):

Outer diameter D: 22.50 mm (tolerance range ±0.05 mm, 100% full inspection using laser diameter gauge)

Inner diameter d: 11.20 mm (concentricity tolerance ≤0.03 mm, ensuring precise fit with the valve core)

Single chip thickness t: 0.80 mm (thickness uniformity error ≤0.01 mm, ensuring load curve linearity)

Free state height H₀: 1.45 mm (measured under standard 20°C conditions with a temperature compensation coefficient of 0.0012 mm/°C)

Load required for compression to 25% stroke: 306 N (corresponding deformation of 0.36 mm, load error ≤±2%)

Load required to compress to 50% stroke: 533 N (corresponding to deformation of 0.73 mm, compliant with ISO 10243 dynamic load standard)

In practical hydraulic valve designs, disc springs are typically mounted at the rear end of the valve core or within corresponding chambers. Their tight engagement with the valve core provides rapid and precise reset force (response time ≤15ms). With a high stiffness coefficient (typical value of 1200N/mm), these springs ensure the valve core swiftly returns to and stabilizes at the set position even under ±10% pressure fluctuations or 5000psi instantaneous shocks, effectively preventing control deviations and enhancing the hydraulic system's response stability and control accuracy. The product series is also available in corrosion-resistant materials such as 304/316 stainless steel and Inconel 718, demonstrating rust-free performance after 480-hour neutral salt spray testing. Capable of withstanding various corrosive hydraulic fluids including water-containing hydraulic oils, emulsions, and phosphate ester hydraulic fluids, these springs achieve a service life 3-5 times longer than conventional springs in harsh environments like metallurgical applications and offshore engineering operations.

The key technical advantages demonstrated in hydraulic system applications include:

The system demonstrates ultra-fast dynamic response (≤15ms action delay), perfectly suited for high-frequency reciprocating operations above 10Hz, and fully meets the rapid switching requirements of servo valves.

The output force value curve exhibits stability (nonlinear error ≤3%) and high repeatability (force value deviation within the same batch ≤2%), facilitating precise hydraulic parameter control.

Multiple material options are available (carbon steel/stainless steel/high-temperature alloy), featuring excellent corrosion resistance (salt spray test ≥480 hours) and environmental adaptability (operating temperature range from-40°C to +200°C), capable of withstanding media conditions with varying chemical compositions.

For detailed hydraulic valve disc spring selection, finite element mechanical simulation calculations, or specific operating condition adaptation analysis, please feel free to contact our professional technical team (equipped with hydraulic system simulation software and material testing laboratory) and business support personnel. We provide sample testing services and customized technical solutions.