excavator hydraulic pump pressure

hitachi hydraulic pump parts: 1. The composition of the external feedback pressure-limiting variable vane pump: shell, bushing, stator, pump shaft, rotor, flow adjustment screw, control piston, needle roller bearing, slider, pressure limiting spring, pressure adjustment screw; 2. The hydraulic pump is a hydraulic power component in the hydraulic system. Its function is to convert the mechanical energy of the system {internal combustion engine or motor} into liquid pressure, and it is the power source of the hydraulic system. Hydraulic pump can be divided into tooth cooling pump, vane pump, plunger pump according to the structure; 3. There are many different uses of each pump. According to the different circuits, it can be divided into open pump, closed pump and so on. The core principle of hydraulic pump {Pastor's principle}: the liquid pressure is equal everywhere. That is, the pressure in the working pump cavity changes and reciprocates the oil suction and oil discharge. Kyushan got all kinds of Hitachi excavator hydraulic pumps and pump parts for sale， you can send your inquiries with the excavator model numbers you need， we will reply as soon as possible.

As one of the "three major parts" (engine, cat 330 hydraulic pump, distribution valve) of an excavator, the "cat 330 hydraulic pump" can be regarded as an energy conversion device more often, which converts the mechanical energy from the engine into hydraulic energy, for The hydraulic system provides a certain flow of pressure oil to drive the hydraulic cylinder and hydraulic motor. It can be said that the hydraulic pump is the power source of the entire hydraulic system.

1) Function and role of komatsu pc200 hydraulic pump The hydraulic pump is also called the working pump, commonly known as the main pump. The hydraulic pump is an energy conversion device that converts the mechanical energy from the engine into hydraulic energy, providing Supply a certain flow of pressure oil to drive the hydraulic cylinder and hydraulic motor, which is the power source of the entire hydraulic system. The hydraulic pump is mainly composed of shell, cylinder block, plunger, swash plate, valve plate, slide plate, drive shaft, servo piston, PC valve, LS valve, solenoid valve and other accessories. The specific application may be different, and the actual product shall prevail for specific use. 2) Applicable models: PC200-8M0, PC200LC-8M0, PC210-8M0, PC210LC-8M0; HB205-1, HB205LC-1, HB215-1, HB215LC-1, HB205-1M0.

Komatsu PC130 hydraulic pump provides hydraulic pump overhaul package original Kyushan ensures to provide our customers with high quality and affordable products and services. The main supply models are: Komatsu excavators: PC50MR-2, PC55MR-2, PC60-7, PC70-8, PC130-7, PC200-7, PC210-7, PC220-7, PC200-8, PC220-8, PC240-8, PC200- 8M0, PC220-8M0, PC240-8M0, PC300-7, PC300-8, PC360-7, PC400-7, PC450-7, PC450-8 Komatsu Loaders: WA320-3, WA380-3, WA380-6, WA420-3, WA470-3, WA470-6, WA500-3, WA600-1, WA600-3 Komatsu Bulldozers: D65A-8, D65-12, D85A-21, D155A-1/-2

What should I do if the excavator walks slowly and deviates? - Check the kobelco sk60 hydraulic pump! What should I do if the digging motor does not move and the car is seriously stuck? - Check the hydraulic pump! What should I do if the whole vehicle of the excavator moves slowly or does not move at all when it is serious - check the hydraulic pump!

When the hyundai 210 excavator hydraulic pump of the excavator is seriously worn, it has a fatal impact on the excavator, so such problems in the excavator must be solved in time. When repairing the hydraulic pump of the excavator, find the cause of the failure from the following three points:

hitachi hydraulic pump maintenance instructions When the hitachi hydraulic pump of the excavator is first used, pay attention to whether the pump has abnormal noise? Because it is easily affected by air bubbles and dust at the beginning of operation, poor lubrication at high temperature or overloading of conditions, etc., make the hydraulic pump emit abnormal sound. Pay attention to the displayed value of the pressure gauge of the hydraulic circuit of the excavator at any time. Understand the function of each valve inside the hydraulic pump system of the excavator. The speed of the hydraulic pump is also related to the control pressure. The control pressure comes from the valve group, with positive control and negative control. The positive control oil pressure signal comes from the differential pressure, the higher the pressure, the greater the hydraulic pump flow, which is a proportional signal.

What k3v112dt main pumps do: 1) k3v112dt main pump has high transmission efficiency to give full play to the power and fuel economy of the engine. 2) The hydraulic system and hydraulic components have sufficient reliability under the action of large load changes and sharp vibration and impact. 3) Coordinate lightweight and vibration-resistant coolers to reduce the total heat generation of the system, so that the hydraulic oil temperature does not exceed 80 degrees when the main engine continues to work, or the temperature rise does not exceed 45 degrees. 4) Due to the dust in the excavator operation site, the hydraulic oil is easily polluted. Therefore, the sealing performance of the hydraulic system is better, and the hydraulic components are less sensitive to oil pollution. The entire hydraulic system should be equipped with an oil filter and a dust-proof device. 5) Hydraulic or electro-hydraulic servo control device is adopted, so that the excavator can set up an automatic control system, thereby improving the technical performance of the excavator and reducing the labor intensity of the driver.

Performance Character of k5v80dtp hydraulic pump 1.High-strength aluminium alloy housing, light weight;  2.Alloy steel gear transmission, stable and durable  3.Flange installation mode: SAE Standard  4.Oil inlet and outlet connection: Screw thread  5.Input axis connection: Woodruff key;  6.Auto-compensation unit of axial and radial clearance;  7.SP series gear design, small fluctuation, high pressure, low noise;  8.High volume efficiency and mechanical efficiency of k5v80dtp hydraulic pump;