K3V112DTP-HNOV Hydraulic Piston Pump
1. Product Overview
K3V112DTP-HNOV is Kawasaki tandem variable swashplate Hydraulic piston pump, serving as the core power component of the excavator hydraulic system. This hydraulic pump adopts twin tandem pump construction and is equipped with PTO power take-off port, which is the key distinction compared with K3V112DT hydraulic pump without PTO interface.
The suffix code HNOV defines regulator assembly, oil port layout, spline shaft specification, rotation direction and installation dimensions matched to designated excavator models. High-quality interchange aftermarket hydraulic pump can be used as cost-effective replacement spare parts for equipment maintenance and overhaul.
Model Code Explanation
- K3V: Kawasaki open-circuit tandem axial piston pump series
- 112: Theoretical displacement of each single pump: 112 cc/rev
- D: Dual tandem pump structure
- T: Tandem layout
- P: Equipped with PTO power take-off interface
- HNOV: Special configuration code for mounting flange, oil port position, control valve and shaft parameters
2. Main Technical Parameters
Item Specification
Pump Type Tandem variable displacement swashplate Hydraulic piston pump (with PTO port)
Single pump displacement 112 cc/rev
Rated Working Pressure 34.3 MPa
Maximum Peak Pressure 39.2 MPa
Maximum self-priming speed 2360 rpm
Volumetric Efficiency ≥93% under rated working condition
Control Mode Negative flow control
Applicable Hydraulic Oil ISO VG46, VG68 anti-wear hydraulic oil
Operating Temperature -20℃ ~ +90℃
Standard Seals NBR; FKM high-temperature sealing kit optional
Approximate Weight 126 kg
3. Working Principle
The engine drives the main shaft and cylinder block assembly to rotate. The reciprocating motion of pistons completes oil suction and high-pressure oil discharge inside the Hydraulic piston pump.
The internal servo piston automatically adjusts the tilt angle of swashplate according to load signals from the hydraulic system, changing pump displacement to regulate output flow.
The reserved PTO port can output power to drive auxiliary components such as pilot pump and fan pump. Negative flow control optimizes power matching between engine and hydraulic system, lowering overflow energy loss and fuel consumption during excavation.
4. Core Advantages
1. Tandem double pump structure with reserved PTO interface, convenient for installing auxiliary hydraulic components to enrich the configuration of the whole hydraulic system.
2. Robust cast pump housing, high power density, stable high-pressure output, this hydraulic pump can sustain continuous heavy-duty excavation.
3. Precisely processed internal friction pairs, low internal leakage, stable efficiency during long-hour continuous operation.
4. Optimized flow distribution structure, low vibration and low operating noise.
5. Consistent mounting flange, spline shaft and oil port layout with original Kawasaki hydraulic pump. Direct plug-and-play replacement without pipeline modification.
6. Mature aftermarket production, shorter delivery lead time and competitive price compared with original OEM pumps.
5. Application Range
Main hydraulic pump for 20-ton crawler excavators
Typical applicable models:
Sumitomo SH200, SH210 series;
Hyundai R215, R225 series;
Sany SY215, SY225;
XCMG XE215, XE225;
Other 20-ton excavators adopting K3V112DTP-HNOV hydraulic system.
6. Common Faults & Replacement Suggestion
Typical failures: Insufficient digging force, slow boom & arm movement, excessive internal leakage, abnormal knocking noise, shaft seal oil leakage of the hydraulic pump.
Thoroughly flush hydraulic pipelines and replace all hydraulic filter elements before installation. Strictly control the cleanliness of hydraulic oil in the hydraulic system. Replace the complete pump assembly if cylinder block, piston shoes and valve plate suffer severe abrasion.