K3V112DT-9N24 Hydraulic Pump for Volvo EC210 Excavator spare parts

Short Description:

Kawasaki K3V112DT‑9N24 EC210 hydraulic pump is an original electronically controlled variable piston pump purpose‑built for EC210 medium‑size excavator hydraulic system. Optimized for digging, slewing and traveling composite movements of 21‑ton‑class excavators, it converts engine power into matched hydraulic output. This main pump delivers dual‑loop oil supply for bucket, boom, arm, swing and travel actuators. With dedicated power‑matching calibration for EC210 host parameters, it guarantees agile compound‑action response and stable output under frequent alternating loads of earth‑moving construction, serving as the core power source for the whole excavator hydraulic circuit.

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Product Detail

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description

K3V112DT‑9N24 EC210 hydraulic pump belongs to the mature K3‑series electronically controlled variable pump family. It adopts 9N24 special control valve assembly, revising the power‑adjustment curve to fit EC210 host torque characteristics. The dual‑pump independent variable structure realizes flow redistribution during multi‑action compound operation, reducing power waste caused by mismatched flow demand. The built‑in negative‑flow sensing module captures real‑time valve‑port pressure signals to adjust pump displacement dynamically, balancing digging force and operating speed. The pump body adopts high‑strength cast housing, paired with wear‑resistant valve plate and plunger friction pairs. Sealing groups are optimized for excavator frequent impact conditions, restraining internal leakage growth under long‑term cyclic loading. Inferior replacement pumps usually suffer from mismatched power curve, poor compound‑action coordination, rapid wear of internal components, which will trigger slow boom lifting, weak digging force, obvious heating and efficiency drop during continuous excavation work.

product parameters

Brand: Kawasaki (Genuine Original)

Model: K3V112DT‑9N24 EC210

Product Name: Electronically Controlled Variable Piston Main Hydraulic Pump Assembly

Applicable Equipment: EC210 21‑ton medium‑size excavator and matched engineering machinery

Structural Type: Axial variable‑displacement double‑piston pump (negative‑flow control)

Core Structure: 9N24 dedicated control valve group, negative‑flow signal sensing unit, dual‑pump swash‑plate variable mechanism, high‑precision plunger assembly, anti‑abrasion alloy valve plate, built‑in pressure‑limiting valve, multi‑layer high‑pressure sealing set, integral cast pump housing

Main Material: High‑strength cast‑steel pump shell, wear‑resistant alloy plunger pair, anti‑impact valve plate, high‑aging‑resistance sealing elements, precision hydraulic control components

Core Function: Dual‑loop hydraulic power supply, negative‑flow variable adjustment, power curve matching for host, supplying power for boom, arm, bucket, swing and travel, keeping coordinated compound‑action performance of excavator

Working Characteristics: Fine flow response, good compound‑action compatibility, reasonable power distribution, low heating value, moderate internal leakage, stable pressure output, strong anti‑impact performance

Working Condition Adaptation: Adapt to frequent alternating load excavation, cyclic start‑stop, impact load, dust‑filled and high‑temperature open‑air construction environment

Matching Parts: Main control valve assembly, hydraulic motor for travel and swing, hydraulic oil tank, return‑line filter, high‑pressure rubber hoses, engine flywheel housing connection end

advantages

• Original 9N24 valve group adopts tailor‑made power adjustment curve, perfectly matching EC210 host output characteristics to avoid power mismatch loss.

• Negative‑flow sensing control optimizes flow distribution for multi‑joint compound movements, making digging and traveling operation smoother.

• Dual‑pump independent variable design can automatically redistribute output according to actual load demand, improving fuel economy during light‑load operation.

• Built‑in multi‑level pressure‑limiting protection can release peak impact pressure instantly to shield internal precision friction pairs from overload damage.

• Wear‑resistant internal matching parts slow down performance degradation under long‑time earth‑moving cyclic operation, restraining excessive temperature rise.

• Optimized sealing configuration resists hydraulic‑oil aging erosion, lowering risk of external oil leakage under vibration‑intensive working conditions.

• Strictly consistent mounting dimensions with original pump, supporting direct field replacement without extra modification.

maintenance & replacement tips

• Regularly inspect pump housing, sealing faces and pipe joints for oil seepage caused by vibration in frequent‑shock excavation scenarios.

• Strictly follow maintenance cycle to replace hydraulic oil and return‑line filter, preventing particle contamination from scratching plunger and valve‑plate friction pairs.

• Pay attention to compound‑action smoothness during excavation work; troubleshoot insufficient digging force and slow movement caused by aging of 9N24 control valve components.

• Check fastening condition of flywheel‑end connecting bolts, avoid abnormal vibration and noise induced by loose installation during frequent start‑stop cycles.

• Do not keep excavator under long‑term overload digging, to prevent premature fatigue damage of internal variable mechanism and friction pairs.

• Install genuine Kawasaki K3V112DT‑9N24 EC210 hydraulic pump when persistent pressure drop, obvious internal wear and large‑area external leakage occur.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.