Excavator Iran

hyundai excavator 210 swing pump M2X146

The swing pump of the Hyundai 210 excavator, Kawasaki M2X146 model, is an axial piston motor with a swash plate design, engineered for the rotational movement of the excavator’s swing arm. This pump has a displacement of 145.7 cm³ per revolution, a nominal operating pressure of 30 MPa, and a maximum pressure of 37 MPa. Its maximum flow rate reaches 210 liters per minute, and rotational speed is up to 1650 rpm. These specifications enable the pump to deliver a torque of 12,800 Nm while ensuring precise control of the swing movement. The swash plate design and precise pressure and flow control maintain hydraulic system efficiency even under heavy operating conditions.

During repair, the pump is first removed from the hydraulic system and thoroughly cleaned to eliminate any suspended particles or contaminants. The cylinder block, drive shaft, swash plate, pressure plates, and springs are inspected using precision tools such as micrometers and gauges. O-rings, seals, and other consumable components are replaced, and friction surfaces are carefully refurbished. Pump pressure and flow are tested after repair to ensure performance meets factory standards, with no leakage or power loss.

After replacing and repairing damaged components, the pump is reassembled with precise torque

KOMATSU excavator pc300 swing pump

The swing pump of the Komatsu PC300-7 excavator is a precision hydraulic unit responsible for supplying oil to the swing motor of the upper structure. This pump is a gear-type design with a volumetric capacity of approximately 45 to 55 liters per minute and an operating pressure of 280 bar. The housing is made of alloy steel with a hardness of 210 to 230 Brinell, ensuring excellent wear and fatigue resistance. Its drive shaft is supported by rolling bearings with a diameter of 45 millimeters for stability and durability.

In terms of type, the Komatsu PC300-7 swing pump operates as an internal gear hydraulic unit that directs oil into the swing motor circuit through the rotation of its driving gear. Heat-resistant O-rings capable of withstanding up to 120 degrees Celsius prevent leakage under high pressure. The pump achieves a volumetric efficiency greater than 92 percent under standard conditions, which ensures smooth and precise swing system performance during heavy-duty excavation tasks.

The repair process of the swing pump involves complete disassembly of the housing, inspection of the gears for wear or micro-cracks, and measurement of radial clearance with a feeler gauge. If the clearance exceeds 0.08 millimeters, gear replacement becomes necessary. Bearings and seals m

Caterpillar Excavator Model 330DL

The Caterpillar 330DL excavator is equipped with a CAT C7 diesel engine producing 204 horsepower at 1,900 RPM. The engine displacement is 7.2 liters, delivering a maximum torque of 930 N·m at 1,400 RPM. The hydraulic system features a 250 L/min pump with 280 bar working pressure, providing precise control of the boom, cabin rotation, and bucket operation. The standard boom measures 6.0 meters, and the 1.2 cubic meter bucket can move large volumes of soil and mineral materials. The hydraulic swing system offers a rotational speed of 11 RPM with a torque of 6,000 N·m, ensuring stable and precise digging operations. The high-strength steel frame withstands bending stress up to 4,500 N·m and increases the machine’s overall durability.

The operating weight of the excavator is 33.2 tons, and its overall length is 9.8 meters, providing stability and maneuverability on rough and sloped terrain. The cabin features an ergonomic vibration-absorbing seat, air conditioning, and a digital display for machine monitoring. The dual-circuit hydraulic braking system and precise joystick controls ensure operator safety and full control. Fuel consumption is approximately 20 liters per hour, and the fuel tank capacity is 450 liters, ensuring high operational efficiency and fewer refueling stop

Excavator accumulator

The accumulator in heavy-duty cranes is typically manufactured in capacities of 6, 10, 20, and 32 liters, with the ability to withstand working pressures up to 350 bar. It is widely used in the hydraulic systems of cranes such as Liebherr 200–1200 tons lifting capacity and Tadano 100–600 tons. The primary role of the accumulator is to absorb hydraulic shocks, store compressed energy, and provide instant pressure for precise boom movements.

In mobile and all-terrain cranes, the accumulator is essential to prevent pressure drops during repetitive lifting cycles. For example, in a Grove 400-ton crane, a 20-liter accumulator operating at 300 bar can supply the necessary energy to safely move the boom in case of a temporary pump shutdown. This function not only enhances safety but also reduces wear on hydraulic pumps, thereby extending their service life.

Reputable manufacturers such as Hydac Germany, Parker USA, and Olaer France supply bladder- and piston-type accumulators specifically for heavy lifting equipment. Typically, the nitrogen pre-charge pressure is set between 0.9 and 1.0 times the system’s working pressure. Compliance with international standards like ISO 4413 and DIN 4807 during installation and maintenance ensures up to 10 years of service life and improves

Komatsu PC300 excavator main pump

The main hydraulic pump of the Komatsu PC300 excavator is typically an axial piston pump with a variable swashplate design, capable of delivering high operating pressure. This pump provides a flow rate of approximately 2×240 liters per minute at a rated working pressure of 320 bar, supplying the necessary power for boom, arm, and swing operations. Its dual-circuit configuration increases efficiency and minimizes pressure losses in heavy-duty hydraulic systems.

The head of the PC300 main pump is generally set between 280 and 320 bar, with a maximum pressure capacity up to 350 bar. The internal design includes hardened steel pistons with a diameter of around 22 to 24 millimeters, operating at a rotational speed of 1800 to 2000 RPM. Precision sealing within the cylinder block reduces internal leakage, ensuring a volumetric efficiency greater than 90 percent.

The repair process of the PC300 hydraulic pump involves complete disassembly, inspection of pistons and the cylinder block, and replacement of worn components. Common failure signs include wear on piston shoes and sliding plates. After reconditioning or replacement, reassembly must be performed with specified torque values, followed by calibration on a hydraulic test bench at 300 bar pressure and 240 liters per minute flo

Komatsu Excavator Relief Valve – Pressure Reducing Valve

The Komatsu excavator relief valve is a hydraulic pressure-reducing valve designed to protect the hydraulic system from excessive pressure. Its standard operating pressure ranges from 250 to 280 bar and can be precisely adjusted via the control screw. The valve body is made of high-strength alloy steel with anti-corrosion coating and can withstand burst pressures up to 400 bar. The inlet and outlet ports have a diameter of 25 millimeters, allowing hydraulic oil flow up to 320 L/min. The internal design includes durable springs and high-pressure-resistant sealing components, extending the valves service life to over 10,000 operating hours.

This relief valve can be directly installed in the boom and bucket hydraulic circuits and performs reliably under heavy, continuous operation. Its precise operation prevents damage to pumps and hydraulic cylinders, ensuring system safety and durability. The valve weighs 3.2 kilograms and measures 180 millimeters in length, facilitating easy installation. Its robust design withstands vibration and shock, operating in temperatures from -20 to 80°C, with simple and quick maintenance. Stable performance under variable pressures maximizes efficiency and the overall hydraulic system lifespan.

HEPCO HL200 excavator exhaust

The HEPCO HL200 excavator exhaust is engineered to discharge combustion gases efficiently and reduce noise under heavy-duty operating conditions. The main body is constructed from heat-resistant alloy steel with an Fe-Cr-Mo composition, capable of withstanding temperatures up to 720°C. The shell thickness ranges from 2.2 to 2.8 mm, coated with a high-temperature silicone-based corrosion-resistant finish. The total length is approximately 910 mm, with an outlet diameter of 112 mm. The multi-stage internal expansion chamber design minimizes back pressure and enhances engine breathing efficiency.

The HEPCO HL200 exhaust features a dual-layer structure with 15 mm compressed rock wool insulation that prevents heat transfer to the outer body. The connection section includes a reinforced 10 mm thick steel flange with a high-temperature graphite gasket for sealing. It provides vibration resistance up to 170 Hz and corrosion endurance verified through 1200-hour salt spray testing. The total exhaust weight is about 10.8 kg, designed for direct installation on the engine manifold. This configuration ensures long service life, reduced emissions, and stable operation under demanding working environments.

HEPCO HC100B excavator exhaust

The HEPCO HC100B excavator exhaust is designed to efficiently discharge engine gases while reducing noise and vibration in heavy-duty working environments. The exhaust body is made from heat-resistant alloy steel with an Fe-Cr-Mo composition, capable of withstanding temperatures up to 720°C. The wall thickness ranges from 2.2 to 2.7 mm and is coated with a high-temperature corrosion-resistant silicone paint. The total length is approximately 900 mm, with an outlet diameter of 112 mm. Its multi-stage internal expansion chamber design reduces back pressure and improves exhaust gas flow efficiency.

The HEPCO HC100B exhaust features a dual-layer construction with 14 mm compressed rock wool insulation that minimizes heat transfer to the outer shell. The connection uses a reinforced 9 mm thick steel flange with a high-temperature graphite gasket. It offers vibration resistance up to 170 Hz and corrosion durability tested through 1200-hour salt spray exposure. The total weight is about 10.5 kg, designed for direct mounting on the engine manifold. This configuration ensures extended lifespan, reduced emissions, and stable operation under harsh working conditions.

HEPCO 912 excavator exhaust

The HEPCO 912 excavator exhaust is designed to efficiently channel engine gases while reducing noise and vibration in heavy-duty operating environments. It is manufactured from heat-resistant alloy steel with an Fe-Cr-Ni composition, capable of withstanding temperatures up to 700°C. The shell thickness ranges from 2 to 2.6 mm and is coated with a high-temperature silicone paint. The total exhaust length is approximately 890 mm, with an outlet diameter of 108 mm. Its multi-stage internal flow design with directional baffles minimizes back pressure and enhances combustion efficiency.

The HEPCO 912 exhaust features a dual-wall structure with 12 mm compressed fiberglass insulation to prevent heat transfer to the outer shell. The connection is reinforced with an 8 mm thick steel flange and sealed using a graphite gasket. It offers vibration resistance up to 160 Hz and corrosion endurance verified through 1000-hour salt spray testing. The total weight is around 9.6 kg, designed for direct installation onto the engine manifold. This configuration provides enhanced durability, reduced emissions, and optimized exhaust performance under demanding field conditions.

HEPCO HC100 excavator exhaust

The HEPCO HC100 excavator exhaust is engineered to efficiently discharge engine gases while minimizing noise and vibration under heavy-duty operating conditions. The body is made of heat-resistant alloy steel with an Fe-Cr-Mo composition, capable of withstanding temperatures up to 720°C. The wall thickness ranges from 2.2 to 2.6 mm and is coated with high-temperature corrosion-resistant silicone. The total length is approximately 905 mm, with an outlet diameter of 110 mm. Its multi-stage internal expansion chamber design reduces back pressure and optimizes engine exhaust flow.

The HEPCO HC100 exhaust features a dual-layer construction with 13 mm compressed rock wool insulation that minimizes heat transfer to the outer shell. The connection uses a reinforced 9 mm thick steel flange with a high-temperature graphite gasket. It provides vibration resistance up to 165 Hz and corrosion endurance tested for 1150 hours in salt spray conditions. The total system weight is about 10.2 kg, designed for direct installation on the engine manifold. This design ensures long-term durability, reduced emissions, and stable performance in demanding work environments.

Excavator and Bulldozer Tooth

Excavator and bulldozer teeth are made of wear-resistant alloy steel with a surface hardness of 50-55 HRC, ensuring long service life under heavy-duty conditions. The weight of the tooth varies between 15 and 35 kg depending on the model, with a length of 400 to 600 mm. The ground contact surface is wear-resistant with a 5 mm heat-treated layer, increasing shear and compressive strength. The conical and blade-like design allows easy penetration into soil, sand, and rock, and the 30-degree mounting angle optimizes shear forces. Attachment to the bucket uses standard bolts and pins, ensuring safety and quick replacement in heavy-duty work sites.

The tooth structure includes stress-relief grooves and lateral reinforcements, providing bending resistance up to 2500 N·m. Corrosion-resistant coating and UV-resistant paint extend the part’s service life. Mounting hole spacing is 120 mm with 25 mm bolt diameter for all standard models. The ergonomic blade design and curved tip reduce fuel consumption and improve excavation efficiency. These features ensure optimal performance, reduced bucket wear, and increased overall durability of heavy equipment.

HEPCO HE100B excavator exhaust

The HEPCO HE100B excavator exhaust is designed to efficiently guide engine gases while reducing noise and vibration under heavy-duty operating conditions. The exhaust body is made from heat-resistant alloy steel with an Fe-Cr-Mo composition, capable of withstanding temperatures up to 710°C. The wall thickness ranges from 2.2 to 2.6 mm, with an external high-temperature silicone coating. The total length is approximately 895 mm, and the outlet diameter is 110 mm. Its multi-stage internal expansion chamber design reduces back pressure and improves exhaust gas flow.

The HEPCO HE100B exhaust features a dual-layer construction with 13 mm compressed rock wool insulation, minimizing heat transfer to the outer shell. The connection uses a reinforced 9 mm thick steel flange and high-temperature graphite gasket. It provides vibration resistance up to 165 Hz and corrosion durability verified through 1100-hour salt spray testing. The total weight is around 10 kg, designed for direct installation on the engine manifold. This structure ensures extended durability, reduced emissions, and optimized engine performance in demanding work environments.

HEPCO HL115 excavator exhaust

The HEPCO HL115 excavator exhaust is engineered for efficient gas discharge and noise reduction under heavy-duty working conditions. It is made from heat-resistant alloy steel with an Fe-Cr-Ni composition, capable of withstanding temperatures up to 700°C. The wall thickness ranges from 2 to 2.5 mm and is protected by a high-temperature silicone coating. The total length is approximately 880 mm, with an outlet diameter of 108 mm. Its multi-stage internal design with expansion plates reduces back pressure and improves engine exhaust flow efficiency.

The HEPCO HL115 exhaust features a dual-layer construction with 12 mm compressed fiberglass insulation that prevents heat transfer to the outer shell. The connection is reinforced with an 8 mm thick steel flange and sealed using a graphite gasket. It provides vibration resistance up to 160 Hz and corrosion durability tested for 1000 salt spray hours. The total exhaust weight is around 9.5 kg, designed for direct installation on the engine manifold. This structure ensures higher durability, reduced emissions, and consistent performance under harsh operating conditions.

Komatsu excavator washer fluid reservoir

The Komatsu excavator washer fluid reservoir is designed with a capacity of 5 to 10 liters and pump operating pressure of 1.5 to 2 bar. The body is made of impact-resistant UV-stabilized polyethylene, with an operating temperature range from -20 to 80 degrees Celsius. Inlet and outlet connections have 8 mm diameter and are compatible with 6–10 mm standard hoses. The reservoir cap includes a silicone seal for leak prevention and mechanical strength up to 150 N/cm². Mounting brackets feature 120 mm bolt spacing, and total reservoir weight is 1.2 kg.

This reservoir can be connected to hydraulic or electric windshield washer systems in Komatsu excavators. Pump output ranges from 1 to 3 liters per minute, with a spray height of up to 1.2 meters. Vibration resistance up to 10g ensures durability. Internal pump and valve materials are chemical-resistant plastics and operate without oil lubrication. Quick installation with standard fittings and easy maintenance are provided. Pressure and durability tests comply with ISO 9001, and service life exceeds 5 years.

Original bearings for Komatsu excavator pumps 200, 220, and 400

Original pump bearings for Komatsu 200, 220, and 400 excavators are designed with 30–50 mm inner diameter and 62–90 mm outer diameter. The balls are made of chromium steel with 60 HRC surface hardness and tensile strength of 2000 N/mm². Inner and outer rings are alloy steel with anti-corrosion coating, supporting radial loads up to 4000 kg and axial loads up to 1200 kg. Lubrication uses industrial NLGI 2 grease, with an operating temperature range from -30 to +120°C. Bearing installation precision meets ABEC P5 class, with vibration below 0.02 mm.

These bearings are compatible with hydraulic pumps of 200, 220, and 400 excavators, ensuring smooth and quiet operation. Maximum rotational speed ranges from 3000 to 6000 rpm, with service life over 50,000 hours. Impact and vibration resistance reaches 15g, with corrosion resistance in oily and humid environments. Installation uses standard bolts and shafts without structural modifications. All internal components comply with ISO 492, with successful pressure and durability testing.