HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts

HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts Featured Image
  • HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts
  • HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts
  • HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts
  • HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts
  • HMSO72 Hydraulic Pump for 70-75 Ton Super Heavy Excavator spare parts

Short Description:

The HMGF68FA hydraulic pump is a top-tier ultra-large-tonnage energy-saving adaptive main pump independently developed for 65-70 ton super-large mining excavators, belonging to the flagship FA-series high-efficiency low-loss upgraded model of the HMG super-heavy-duty pump family.

Product Detail

Product Tags

description

The HMSO72 hydraulic pump adopts industrial top-tier SO-series steady-state low-pulse variable axial plunger structure, comprehensively optimized for the 70-75 ton super heavy excavator’s long-cycle full-load mining characteristics. It abandons the common defect of conventional heavy-duty pumps that prioritize high power at the cost of poor stability, and achieves perfect balance of ultra-high pressure, super-large flow and ultra-low pulsation steady-state output. The core cylinder block and piston shoe friction pair adopt integral die-forging forming and ultra-fine low-pulse mirror finishing technology, matched with deep vacuum stress-relief quenching treatment, featuring ultra-high structural rigidity and uniform friction clearance. It effectively suppresses flow fluctuation and pressure jitter caused by long-term ultra-heavy load circulation, ensuring consistent hydraulic output stability throughout the full service life. The exclusive SO constant-pressure closed-loop control system realizes real-time micro-compensation of pressure and flow, automatically calibrating drift errors generated by long-hour operation, maintaining zero-drift steady-state working conditions all year round.

product parameters

Product Model: HMSO72 Hydraulic Pump
Product Type: SO-Series Steady-State Low-Pulse Ultra-Heavy-Duty Long-Life Variable Axial Plunger Main Pump
Applicable Equipment: Universal for 70-75 Ton Domestic & Imported Super Heavy Mining Excavators
Structural Features: SO Constant-Pressure Steady-State Architecture, Ultra-Low-Pulse Mirror Friction Pair, Reinforced Anti-Deformation Steady-Pressure Swash Plate, Heavy-Duty Long-Life Bearing System, High-Temperature Pressure-Resistant Anti-Fatigue Sealing, Full-Time Drift-Free Closed-Loop Compensation
Core Material: Ultra-High-Rigidity Die-Forged Cylinder Block, Low-Pulse High-Stability Alloy Piston Shoe, Integrally Thickened Forged Pump Housing, High-Strength High-Temperature Resistant Composite Seal
Working Performance: Full-Time Steady Pressure Output, Ultra-Low Flow Pulsation, Zero Long-Term Drift, Strong Ultra-Heavy Load Adaptability, Near-Zero Internal Leakage, Low Vibration & High Durability
Core Functions: Provide ultra-stable and consistent super-heavy-load hydraulic power for 70-75 ton super heavy excavators, eliminate pressure floating and flow jitter during long-hour mining operation, stabilize compound action coordination, and improve long-term operation reliability of extreme mining equipment.
Applicable Scenarios: Ultra-Large Open-Pit Continuous Mining, Thick Hard Rock Layer Stripping, Ultra-Heavy Massive Earthwork Transfer, Round-The-Clock Full-Load Uninterrupted Operation, Long-Cycle Extreme Heavy-Duty Working Conditions
Matching Parts: Compatible with mainstream 70-75 ton super heavy excavator hydraulic valve groups, pilot systems and complete hydraulic auxiliary components.

advantages

  • Exclusive SO Constant-Pressure Steady-State Technology, Zero Long-Term Drift: Different from FA adaptive energy-saving, VB impact-resistant and VL high-flow single-performance structures, HMSO72 adopts dedicated full-time steady-state closed-loop compensation logic. It automatically calibrates pressure and flow errors caused by long-hour full-load operation, solving the industry problem of gradual performance degradation of ultra-large excavators after months of continuous mining.
  • Ultra-Low-Pulse Mirror Friction Pair, Super Smooth Compound Action: The die-forged high-rigidity cylinder block and low-pulse uniform-gap piston shoe are processed by ultra-fine mirror finishing and deep stress-relief quenching. The flow pulsation rate is greatly reduced, effectively eliminating equipment jitter and uncoordinated actions during ultra-heavy rock breaking and thick layer stripping.
  • Reinforced Anti-Deformation Structure, Strong Ultra-Heavy Impact Resistance: Upgraded thickened integral swash plate and heavy-duty long-life bearing assembly enhance structural rigidity and fatigue resistance, effectively resisting deformation and failure under long-term ultra-heavy full-load impact, maintaining stable output in extreme mining working conditions.

FAQ

  • Q1: What is the core positioning of HMSO72 in the full series?
  • A: The HMSO72 is the ultra-heavy-duty steady-state low-pulse flagship model of the HMG/GM full series. Positioned higher than HMGF68FA, it focuses on long-cycle zero-drift stability and ultra-smooth operation, specially developed for 70-75 ton super heavy excavators that require year-round uninterrupted full-load mining.
  • Q2: What core faults can HMSO72 solve?
  • A: It targets typical stubborn faults of 70-75 ton super heavy mining excavators: long-hour working pressure floating, excessive flow pulsation, jitter during ultra-heavy stripping, uncoordinated compound actions, gradual power attenuation and chronic oil seepage of old pumps.
  • Q3: Is parameter debugging or pipeline modification required after installation?
  • A: No modification and debugging are required. The HMSO72 is factory pre-calibrated with super heavy-duty steady-state parameters, supporting 1:1 lossless plug-and-play replacement, fully compatible with the original hydraulic system of 70-75 ton super heavy excavators.
  • Q4: What working conditions is HMSO72 most suitable for?
  • A: It is exclusively suitable for 70-75 ton ultra-large open-pit mines, thick hard rock continuous stripping, ultra-heavy earthwork accumulation and round-the-clock full-load long-cycle uninterrupted operation, being the best choice for long-term stable mining scenarios.
  • Q5: What are the maintenance tips to maintain steady-state performance?
  • A: Keep the hydraulic oil clean and replace high-precision filter elements regularly to ensure uniform friction pair clearance; avoid frequent extreme overload impact in short term; control hydraulic oil temperature during long-shift operation to maintain ultra-low pulsation and zero-drift steady-state output.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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our warehouse

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