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The excavator track chain is used to connect the track used in construction machinery such as bulldozers and military machinery such as tanks. Process: bar sawing - heating - forging - after heat quenching - cooling - magnetic particle inspection - milling end face - high frequency quenching - tempering - milling Material: 35MnBM is now commonly used, and the hardenability of this steel is very good. Model: The model of the chain link is determined according to the center distance of the two holes. There are mainly 135, 154, 171, 190, 228 and so on.excavator track chain suppliers

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.

Hitachi bucket cylinders are widely used for the engineering machinery industries, hitachi bucket cylinder is an important actuator in the hydraulic transmission system, which is an energy conversion device that converts hydraulic energy into mechanical energy. Kyushan provide high quality hitachi bucket cylinder, including boom cylinder, arm cylinder and bucket cylinder, hitachi bucket cylinder. Our products are produced according to original drawings and can guarantee the replacement with the OEM parts.

Common cat excavator cylinder connection forms: (1) Flange type connection has simple structure, convenient processing and reliable connection, but requires sufficient wall thickness at the end of the cylinder to install bolts or screw in screws. It is a commonly used connection form. (2) The half-ring connection is divided into two connection forms: the outer half-ring connection and the inner half-ring connection. The half-ring connection has good manufacturability, reliable connection and compact structure, but weakens the strength of the cylinder. The application of half ring connection is very common, and it is often used in the connection of seamless steel tube cylinder and end cover. (3) There are two types of threaded connection: external thread connection and internal thread connection, which are characterized by small size, light weight and compact structure, but the structure of the cylinder end is complex. light occasions. (4) The tie rod connection has simple structure, good manufacturability and strong versatility, but the volume and weight of the end cover are large, and the tie rod will stretch and become longer after being stressed, which will affect the effect. Only suitable for medium and low pressure hydraulic cylinders with small lengths. (5) Welded connection, high strength, simple manufacturing, but easy to cause cylinder deformation during welding.

The hydraulic excavator arm cylinder of the excavator is one of the executive components of the hydraulic system of the excavator. The excavator arm cylinder is used to perform linear reciprocating motion. It is characterized by simple structure, convenient maintenance, small mass, large force transmission, and small motion inertia. Realize remote control and automatic control.

Application of hydraulic breakers for excavators： 1. Mining: mountain opening, mining, grid screen crushing, secondary crushing 2. Metallurgy: ladle, slag cleaning, furnace dismantling, equipment foundation dismantling 3. Railway: mountain driving, tunnel excavation, road and bridge demolition, roadbed consolidation 4. Highway: highway repair, cement pavement crushing, foundation excavation 5. Municipal gardens: concrete crushing, water, electricity, gas engineering construction, old city renovation 6. Construction: Demolition of old buildings, broken reinforced concrete 7. Ships: hull removal of mussels and rust 8. Others: ice breaking, frozen soil breaking, sand vibrating

Precautions after replacing the new cat 320d hydraulic pump (1) Pay attention to the discovery of abnormal phenomena at any time Abnormal sounds, vibrations, or abnormal signals of the monitoring system must have their reasons. When an abnormal phenomenon is found, immediately find the circuit diagram, follow the diagram to find out, and carefully observe whether the abnormal phenomenon is caused by a temporary error. Assess the need for parking. For example, pressure, load, temperature, time, start-up, and stop all include the reasons that may cause abnormal phenomena. Usually, it should be analyzed and discussed item by item.

Our company specializes in selling a full range of Komatsu spare parts for Komatsu excavators: various supporting connecting rods, rockers, pins, bushings, tensioning devices, bucket teeth, side teeth, drive gear rings, rollers, supporting rollers, Idler, final drive assembly, slewing bearing, computer board, display screen, solenoid valve, relay, pressure switch. Cab door assembly, inner parts, hydraulic oil tank, seat assembly, PC200/300/400 original horse head, engine cover, glass, sealing strip, original maintenance filter element (air filter, diesel filter, machine filter, water filter) filter, hydraulic filter, etc.), wiper motor assembly, wiper assembly, ignition switch, glass block, radio, air conditioning panel, etc.

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