803078016 XCMG GR2605 motor grader accumulator pressure switch

803078016 XCMG GR2605 motor grader accumulator pressure switch

Core Product Advantages

Specifically designed and developed for the XCMG GR2605 motor grader, this product perfectly matches the model’s 194kW rated power output and the 9-10MPa nitrogen charging pressure of the accumulator. It precisely meets the demands of harsh working environments such as mining, construction, and other dusty, vibrating, and flammable/explosive environments. Utilizing a high-precision stainless steel diaphragm DMS sensor, the pressure detection accuracy reaches ±0.5% FS (0℃~80℃), offering a 40% faster response time than traditional mechanical switches. Pressure signal conversion and circuit switching can be completed in ≤10ms, ensuring that the charging pump starts immediately when the accumulator pressure falls below the set lower limit (e.g., 9MPa) and automatically stops when it exceeds the upper limit (e.g., 10MPa), maintaining stable pressure. The housing is made of 304 stainless steel in one piece, with a corrosion-resistant and wear-resistant surface treatment. The interior is filled with flame-retardant and anti-static material, with a surface resistance ≤1×10^9Ω, meeting ATEX Zone 22 explosion-proof standards (Ex dⅡCT6). It also has an IP67 protection rating, resisting dust, mud, and high-pressure water washing, and is suitable for a wide temperature range of -40℃ to 125℃. Its service life under harsh outdoor conditions exceeds 10 years. It adopts an M14×1.5 standard threaded interface (compatible with accumulator charging valve specifications) and an M12x1 waterproof plug design, strictly matching the original XCMG accumulator installation dimensions. It supports direct integration into the top of the accumulator or hydraulic lines, simplifying wiring with a contact resistance ≤0.1Ω, ensuring stable signal transmission, and allowing for quick replacement without additional modifications. This significantly reduces maintenance costs and downtime risks, meeting the high reliability and mining safety standards of XCMG accessories.

Key Technical Parameters

Compatible Model: XCMG GR2605 Mining Grader
Product Model: 803078016
Standards: MT/T113-1995 Mining Flame Retardant and Antistatic Standard + GB/T 3836.1-2021 General Requirements for Explosive Atmospheres + EN 60947-5-1 Electrical Equipment Standard + XCMG Original Accumulator System Technical Specifications
Sensor Type: Stainless Steel Diaphragm DMS Pressure Sensor
Rated Working Pressure: 0~25MPa (Compatible with main unit accumulator 9-10MPa nitrogen charging pressure requirement)
Operating Pressure Range: 7MPa~12MPa (Upper and lower limits can be precisely adjusted via touch buttons)
Pressure Detection Accuracy: ±0.5% FS (0℃~80℃); ±1.0% FS (-40℃~0℃) Response Time: ≤10ms (Pressure signal conversion and switch triggering) Applicable Media: Hydraulic oil, nitrogen (suitable for multi-media monitoring needs of accumulators) Operating Temperature: -40℃~125℃ (Strong high-temperature stability, no freezing or jamming at low temperatures) Protection Rating: IP67 (Completely dustproof + short-term immersion protection, suitable for harsh operating environments) Explosion-proof Rating: Ex dⅡCT6 (Complies with ATEX 2014/34/EU directive, meets mining explosion-proof requirements) Electrical Parameters: Power supply voltage DC12V~30V, maximum output current 1.2A, output voltage 4~20mA, analog + digital output Output Form: Dual digital output (normally open NO + normally closed NC) + analog signal output, supports pump start/stop control and pressure data feedback Connection Specifications: Pressure interface M14×1.5-6g (suitable for accumulator charging valve), electrical interface M12x1 Waterproof Plug (Compliant with EN 61076-2-101 Standard)
Safety Features: Flame retardant and anti-static (surface resistance ≤1×10^9Ω), short circuit protection, overvoltage protection
Housing Material: 304 stainless steel (corrosion resistant and wear-resistant), internal flame retardant sealing material
Service Life: Five million full-range cycles without failure

Application Scenarios

Suitable for hydraulic system energy storage pressure monitoring and control in XCMG GR2605 graders in mining, open-pit mining operations, road construction, and large-scale infrastructure projects, especially suitable for harsh mining environments with high-frequency pressure fluctuations, severe vibrations, and flammable and explosive materials. As the “pressure control center” of the accumulator system, its high-precision pressure detection and rapid signal response capabilities ensure that the accumulator pressure is always maintained within the optimal operating range of 9-10MPa. When the pressure is insufficient, it automatically triggers the filling pump to replenish the pressure, and when the pressure is too high, it cuts off the filling circuit to avoid the risk of accumulator overpressure. At the same time, it feeds back pressure data to the vehicle control system in real time, and issues an immediate warning when an abnormal pressure occurs, providing emergency power protection for the hydraulic system and braking circuit. It effectively prevents the hydraulic system from paralyzing due to accumulator failure, significantly improving the continuity and safety of the machine’s operation. It is an original equipment manufacturer (OEM) part for the repair and replacement of the accumulator system of the XCMG GR2605 grader.

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