K3V112DTP-9C32 Hydraulic Piston Pump
2 month ago
Product details
K3V112DTP-9C32 Hydraulic Piston Pump
1. Product Overview
K3V112DTP-9C32 is Kawasaki tandem variable swashplate Hydraulic piston pump, serving as the core power component of excavator hydraulic system. This hydraulic pump adopts twin tandem pump construction and is equipped with a PTO power take-off port, which differentiates it from the K3V112DT hydraulic pump without PTO interface.
The suffix code 9C32 defines the regulator assembly, oil port layout, spline shaft specification, rotation direction and installation dimensions, specially matched for Sany excavator series. 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
- 9C32: Special configuration code for regulator, mounting flange, oil port position 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 realizes oil suction and high-pressure oil discharge inside the Hydraulic piston pump.
The built-in servo piston automatically adjusts the tilt angle of swashplate according to load feedback signals from the hydraulic system, changing pump displacement to regulate output flow.
The reserved PTO port can output power to drive auxiliary components including pilot pump and fan pump. Negative flow control optimizes power matching between engine and hydraulic system, effectively reducing overflow energy loss and fuel consumption during excavation operations.
4. Core Advantages
1. Tandem double pump structure with reserved PTO interface, convenient for installing auxiliary hydraulic components to enrich the overall configuration of the hydraulic system.
2. Robust cast pump housing and high power density, this hydraulic pump delivers stable high-pressure output and adapts to continuous heavy-duty excavation working conditions.
3. Precisely processed internal friction pairs, low internal leakage, maintaining stable working efficiency under long-hour continuous operation.
4. Optimized flow distribution structure, featuring low vibration and low operating noise.
5. Mounting flange, spline shaft and oil port layout fully consistent with original Kawasaki hydraulic pump. Direct plug-and-play replacement without modifying pipelines.
6. Mature aftermarket manufacturing, 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:
Sany SY205, SY215, SY225, SY235 series;
Also compatible with other 20-ton excavators equipped with K3V112DTP-9C32 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.
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