K5V140DTP-9T1L-17T Hydraulic Main Pump for SANY SY235-8 Excavator

Product Overview

The K5V140DTP-9T1L-17T is a dedicated tandem axial piston main hydraulic pump, engineered as a direct drop-in replacement for SANY SY235-8 and SY235C-8 series crawler excavators. Built on the mature Kawasaki K5V series hydraulic platform, this pump delivers steady hydraulic power output and precise flow regulation for 23-25 ton class excavators working in construction, earthmoving, quarrying and municipal engineering sites.

Its tandem dual-pump structure integrates two independent piston pump units into one cast iron housing. The two units supply pressurized hydraulic oil to the excavator’s working circuit (boom, arm, bucket) and travel / swing circuit respectively, matching the original split-flow design of SANY hydraulic systems. The negative flow control architecture aligns fully with factory control logic, requiring no modification to the machine’s hydraulic lines or electrical harness during installation.

Core Design Features

• Swash Plate Variable Displacement: Classic swash-plate axial piston structure supports continuous displacement adjustment based on real-time system load, cutting down unnecessary power loss and improving overall fuel efficiency of the excavator.

• Tandem Dual Pump Configuration: 140cc per unit displacement, delivering combined flow output to support simultaneous compound movements of boom, arm, bucket and swing, without obvious speed drop under heavy load.

• Negative Flow Control System: Equipped with dual pressure regulators and a built-in solenoid valve, the pump responds accurately to pilot control signals, ensuring smooth operation and consistent digging force across different working conditions.

• Standard 17-Tooth Input Shaft: 17-spline drive shaft matches the original engine flywheel housing interface, guaranteeing reliable torque transmission and straightforward bolt-on installation.

• Heavy-Duty Construction: High-strength cast iron body with precision-machined cylinder block, piston assembly and valve plate, designed to withstand long-hour high-pressure operation and dusty, high-vibration job site environments.

Technical Specifications

Compatibility & Application Scenarios

This hydraulic main pump is dimensionally and functionally matched to SANY SY235-8 and SY235C-8 crawler excavators. Its mounting flange, oil port positions, regulator interface and control logic are consistent with the original equipment, making it a suitable replacement option for excavator repair, overhaul and hydraulic system retrofitting.

The K5V140 series pump platform is also widely adopted in other construction equipment such as crawler drilling rigs, medium wheel loaders and material handling machinery. This specific 9T1L-17T variant is calibrated specifically for SANY 23.5 ton excavator hydraulic systems to deliver performance matching factory specifications.

Field Performance & Serviceability

In actual job site operation, the K5V140DTP-9T1L-17T maintains stable volumetric efficiency even under continuous high-load working cycles. Its precision-lapped valve plate reduces internal leakage, ensuring fast response of hydraulic actuators and consistent digging performance.

The built-in pressure and flow regulators automatically adjust pump output according to system demand, lowering excessive heat generation and extending the service life of hydraulic oil and sealing components. For equipment owners, repair workshops and parts distributors, this pump provides a cost-effective replacement solution to restore excavator hydraulic performance and minimize machine downtime.