Komatsu Excavator Iran

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

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.

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.

complete wiring harness for Komatsu excavators

The complete wiring harness for Komatsu excavators includes power, control, and signal cables with total length between 5 and 12 meters. Cable diameters range from 2 to 10 mm, supporting currents from 5 to 60 A. Conductors are 99.9% pure copper with electrical resistance under 0.02 ohms per branch. PVC insulation is heat- and oil-resistant up to 120°C, with UV protection, ensuring over 8 years of service life. Connectors feature vibration-resistant locks up to 15g, allowing quick installation without structural modifications.

This wiring harness can connect to hydraulic, electrical, lighting, and control systems of Komatsu excavators. Operating temperature ranges from -30 to +120°C, with vibration resistance up to 15g. Cable routing uses standard clamps and protective channels to ensure safety and prevent abrasion. All connections comply with UL 758 and ISO 6722 standards, with over 1000 hours of current, resistance, and durability testing. Power transmission efficiency exceeds 95 percent, and minimum bend radius is under 50 mm.

filter base for Komatsu excavators

The filter base for Komatsu excavators is made of aluminum alloy with 8 mm thickness and 250 MPa mechanical strength. Total base length ranges from 200 to 300 mm, with a filter mounting diameter of 80 mm. Bolt holes follow M12 standard with 60 mm center-to-center spacing for quick installation without structural modifications. The filter contact surface has an anodized corrosion-resistant coating, and operating temperature ranges from -30 to +120°C. The base includes oil and water guide grooves to prevent leakage and sediment accumulation.

This base can directly mount oil, hydraulic, and fuel filters for Komatsu excavators. Total weight ranges from 1.2 to 1.5 kg, with vibration resistance up to 15g. Chemical resistance against oil, fuel, and lubricants is high, with estimated service life over 8 years. All bolts follow DIN 931 standard with 25 Nm torque. Pressure, durability, and corrosion resistance tests comply with ISO 16232, with fluid flow efficiency above 95 percent.

complete cabin of a Komatsu excavator

The complete cabin of a Komatsu excavator is constructed from ST52 steel sheets with thicknesses of 3 to 5 millimeters to resist operational pressure, impacts, and vibrations. Cabin dimensions are typically 2.2 meters long, 1.5 meters wide, and 2.3 meters high, with a total weight including equipment of 450 to 650 kilograms. The structure includes reinforced pillars, a slip-resistant roof, and 8-millimeter tempered glass to ensure operator safety against falling objects and heavy vibrations.

Internal wiring uses heat-resistant 105°C, 24V DC cables. The cabin features control switches, pressure and temperature displays, ventilation system, adjustable hydraulic seat, and multi-axis control levers. Installation of electronic equipment follows ISO 13766 standards, and hydraulic and electrical functional tests are performed before delivery to ensure full safety and operational efficiency.

Komatsu excavator buckets

Komatsu excavator buckets are made from chrome-molybdenum steel with a surface hardness of 55-60 HRC, ensuring resistance to wear and repeated impacts from soil and rock for up to 10,000 operational hours. Bucket lengths range from 500 to 1200 mm, widths from 150 to 400 mm, and wall thicknesses from 20 to 50 mm depending on the excavator model. The cutting edge is designed with a 45-degree angle and curved profile to improve soil penetration and increase digging efficiency by up to 20%.

The bucket attachment system includes steel bolts and pins with 1000 MPa tensile strength and a standard spacing of 200 mm. Surface treatment with nitriding and 200-micron epoxy coating ensures corrosion and industrial moisture resistance. Impact and mechanical load testing up to 50 kN is performed, guaranteeing operational life of over 8 years under harsh environmental conditions.

Komatsu excavator engine speed sensor

The Komatsu excavator engine speed sensor is made of stainless steel and engineering-grade plastic, with thermal resistance from -40°C to 125°C, ensuring measurement accuracy of ±0.5% over 0 to 3000 rpm. The sensor diameter is 20 mm, body length 60 mm, and weight approximately 120 grams. The internal structure includes a permanent magnet and nickel-coated magnetic core, providing a noise-free output signal with frequency ranging from 0.1 to 5 kHz.

Sensor connections use vibration- and oil-resistant industrial connectors, and the signal cable is shielded against electromagnetic interference. Installation is press-fit at 1 mm distance from the flywheel to maintain measurement accuracy. Performance testing includes output signal verification under operational temperatures, 5 g vibration, and 95% humidity, guaranteeing a service life exceeding 8 years.

electrical system of a Komatsu excavator

The electrical system of a Komatsu excavator includes the starter, alternator, battery, and control boards, made from stainless steel, aluminum, and pure copper with thermal insulation to ensure stable operation from -20°C to 80°C. The starter operates at 150 A and 24 V, delivering an initial torque of up to 600 Nm. The alternator is designed for 24 V and 80 A output, featuring automatic charge control and overload protection.

Electrical connections include PVC-insulated copper cables, corrosion-resistant metals, 100 A fuses, and vibration-resistant relays. The battery has a 150 Ah capacity and over 5 years of operational life. Performance testing includes vibration, thermal shock, EMC, and full-load current according to ISO 16750, ensuring safety and longevity of electrical components under harsh working conditions.

KOMATSU excavator separator filter

KOMATSU excavator is among the most well-known manufacturers of excavators in the world that have high performance and durability. separator filters that are used on KOMATSU excavators help eliminate not only solid particles from the fuel which is gas-oil for most heavy duty machines but also removes liquid drops of water, oil and ..
by removing the liquid drips that is absobed first and stored on the top head cap of the separator filter that can later be discharged, separator filters help KOMATSU excavators have better combustion within the engine and have higher external torque. there are various manufacturers of KOMATSU excavator fuel separator filter including international brands such as FLEETGUARD, DONALDSON, MANN, SAKURA , ...

KOMATSU excavator donaldson oil filter

KOMATSU excavator donaldson oil or lube filter is produced in two different designs including the standard design that starts in part number with P and the blue lube filters starting in part number with DBL which stands for donaldson blue lube. the blue filters have higher absorption ability and standard that leads to longer life time. not only DONALDSON lube filters are design for providing the highest efficiency of the engine by eliminating the unwanted particles but they also are produced international environmental standards. Heavy duty components of DONALDSON lube filters for KOMATSU excavators such as baffle pates, springs and can housing are all produced according to the highest standards.

KOMATSU excavator fuel filter

KOMATSU excavator fuel filter that is produced in different brands and in different capacities for all available KOMATSU excavators including PC200, PC220, PC200-5, PC200-6, PC200-7, PC210LC, PC300, PC400-7, PC600 is used in order to eliminate the pollutants that are rampant within Gas-oil prior to being injected into the ignition chamber of KOMATSU excavators. two different types of fuel filters are used on KOMATSU excavators including old generation of fuel filters and water separator filters. KOMATSU excavator filters are available in various brands including DONALDSON, FLEETGUARD and MANN filters.