150106010111A Double plunger pump unit Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

150106010111A Double plunger pump unit Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

150106010111A is a double plunger pump set with a special part number from Sany, designed specifically for the SY1250H mining excavator. This model has a large operating load, and the hydraulic system has high requirements for high pressure power supply and flow stability. It integrates the core characteristics of high-strength wear-resistant plungers, double pump linkage structure, precision flow distribution control, and high pressure sealing protection, and complies with national and industry standards such as GB50265-2022 “Pump Station Design Standard” and GB/T 25638.2-2025[3][6]. It is equipped with core components such as SSY008119457 hydraulic oil tank assembly, pump room pipeline, and SSY009114936 cooling pipeline. It is suitable for open-pit coal mines and metal mines, and can avoid faults such as high pressure leakage, flow fluctuation, and pump wear. It is a key original part for ensuring continuous operation of the whole machine in the mine.

Core technical parameters

Model: 150106010111A
Main body materials: The pump body is made of 40Cr alloy structural steel with quenching and tempering treatment; the plunger is made of high-strength alloy steel with surface treatment of plasma spraying or hard chrome plating, achieving a hardness of HRC 60-65 and tensile strength ≥1000MPa; the cylinder block is made of ductile iron; the distributor plate is made of wear-resistant alloy material.
Operating temperature: -30℃ to 160℃, suitable for the day-night temperature difference in open-pit mines and the high-temperature working environment of pump units.
Key operating parameters: Working pressure 25-40MPa, meeting the high-pressure power requirements of the SY1250H machine; constant pressure accuracy ≤1mH2O; pressure fluctuation range reduced to ±2Bar; flow rate adaptable to 50-150m³/h; dual pump linkage allows for independent flow rate control or coordinated output; volumetric efficiency ≥95%; total efficiency ≥90%; average energy saving rate over 25%; speed adaptable to 1500-2200r/min; plunger-cylinder clearance controlled at 5-8μm.
Structural design: It adopts an integrated structure of dual plunger pump; built-in precision distribution plate; swashplate and straight shaft structure; the seal adopts a dual structure of mechanical seal + packing seal, with precise fit between the plunger and cylinder; and reinforcing ribs are set in key parts.
Shape and size: Customized to fit the pump room space of SY1250H, featuring an integrated box structure with a regular shape, free of burrs and cracks, and dimensions precisely matched to the pump room installation space.
Surface treatment: The pump body adopts a dual protection process of phosphating and high-temperature anti-rust coating, and the plunger surface is hardened to withstand salt spray for ≥800 hours.

Core functions and roles

As the “high-pressure power core” of SY1250H, its core function is to output high-pressure hydraulic oil through dual pump linkage, convert mechanical energy into hydraulic energy, and drive the excavator’s walking, rotating, digging and other actuators to operate efficiently [6]. At the same time, it can achieve flow and pressure regulation through precise flow distribution and variable control, buffer vibration, and prevent high-pressure leakage. It can avoid the machine’s movement jamming and efficiency reduction caused by insufficient high pressure and flow fluctuation, extend the service life of the core components of the hydraulic system, reduce operation and maintenance costs, and form a high-pressure hydraulic power system for the whole machine together with the hydraulic oil tank, pump room pipeline, cooling pipeline, etc. It is a key power component to ensure stable and efficient mining operations.

Applicable Scenarios

Widely used in the hydraulic system of SY1250H machine, it is adapted to the core link of high-pressure power output in the pump room, and connects to the SSY008119457 hydraulic oil tank, pump room pipeline, and SSY009114936 cooling pipeline. It undertakes the functions of high-pressure hydraulic oil supply and power transmission[3][8]. It can also be adapted to large mining excavators of the same specifications. It is suitable for open-pit mines and earthwork projects with 24-hour continuous heavy load and harsh working conditions. It is an essential hydraulic core component for equipment manufacturing, overhaul, after-sales maintenance and bulk purchase. It can reduce energy consumption and downtime costs and improve work efficiency.

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1. Pump chamber piping
2. Return oil pipeline
3 SSY009114936 Cooling Pipeline
4. Traveling Pipeline
5 Valve body installation
6-turn pipeline
7. Boom piping
8. Boom and Bucket Piping
9 SSY008119457 Hydraulic oil tank assembly
10 12921534 Sheath
11 12921535 Sheath

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