Doosan DX260LC DX260 中型バックホーのためのKawasaki K3V112DTP-9N24 K1056909 油圧ポンプ

DX260 DX260LC Hydraulic Main Pump | K1056909 K3V112DTP‑9NM9 Axial Piston Pump | Doosan Excavator Aftermarket Replacement Parts

Product Brief

This K3V112DTP‑9NM9 dual‑variable axial piston main pump, part number K1056909, acts as the core hydraulic power source for Doosan DX260 and DX260LC medium‑large excavator units. Optimized for heavy earth‑moving, road construction, landfill backfill and quarry secondary crushing works, it transforms engine mechanical torque into adjustable high‑pressure hydraulic flow to support digging, boom movement, slewing and travelling operations. As a direct aftermarket replacement assembly, this hydraulic pump is widely sourced by local repair centers, equipment rental operators and cross‑border spare‑part merchants across Africa, Southeast Asia and Middle East for machine overhaul and component renewal.

Working under continuous variable‑load and high‑temperature operating conditions, medium‑large excavator main pumps are prone to cylinder block galling, piston shoe wear, valve plate surface damage and progressive internal leakage. Typical failure symptoms include reduced digging breakout force, unresponsive combined movements, poor travel climbing performance, sustained hydraulic oil overheating, vibrating abnormal noise from pump housing and obvious power drop once the machine reaches working temperature. Unexpected pump breakdown will interrupt construction schedules and bring extra emergency repair costs for project contractors and equipment owners.

Our manufactured aftermarket hydraulic pump strictly follows OEM drawing standards for mounting flange dimension, spline specification, solenoid installation position and system pressure calibration. No cutting, welding or extra adapter modification is required for field replacement, enabling direct drop‑in fit and minimizing equipment downtime. Compared with high‑cost original pump assemblies with long procurement lead‑times, this factory‑supplied aftermarket pump delivers stable hydraulic output performance at competitive wholesale price, perfectly matching bulk‑order demands for medium‑large excavator spare‑part distributors.

Unique Product Competitive Advantages

1. Fully dimension‑matched for Doosan DX260 / DX260LC electronic‑controlled hydraulic system, not interchangeable with other excavator series
Produced according to original installation technical specifications, this main pump keeps consistent oil port layout, solenoid mounting position and pressure setting parameters. Precisely matched friction pairs greatly suppress internal leakage after assembly. No secondary machining work is needed for on‑site installation.
2. Upgraded friction‑pair craftsmanship to extend service life under medium‑heavy cyclic working conditions
Many low‑cost substitute pumps suffer obvious pressure attenuation after short running hours due to inferior raw materials of internal friction components. Our core functional parts adopt standardized quenching and fine‑grinding processing, improving wear resistance under frequent load fluctuation. It helps fleet owners reduce overall pump replacement frequency for heavily‑operated DX260‑series excavators.
3. Multi‑dimensional bench testing before shipment to eliminate hidden on‑site failure risks
Every finished hydraulic pump undergoes pressure endurance test, flow calibration and tightness leakage inspection on professional hydraulic test bench before packing. Defective units are screened out at factory, avoiding maintenance rework burden and unexpected site shutdown losses for end‑users.
4. Reliable aftermarket manufacturing solution to control medium‑large machine maintenance expenditure
Genuine OEM main pumps for DX260 series come with high purchase expense and lengthy delivery cycle. Our factory‑direct aftermarket pump achieves comparable working stability, helping enterprises managing multiple excavator units cut annual overhaul budgets.
5. Diversified global logistics solutions for wholesale purchasers
In‑stock items can be dispatched rapidly upon payment confirmation. Air freight supports urgent breakdown repair orders; consolidated sea freight and full‑container service provide cost‑saving options for long‑term bulk importers.

Factory Production Strength

Our manufacturing base specializes in R&D and volume production of aftermarket hydraulic main pumps, travel motors and swing motors for mainstream excavator brands. We have complete production workflows covering alloy steel forging, precision grinding, professional heat‑treatment and finished‑product hydraulic bench test. Dedicated simulation test equipment replicates real‑world construction variable‑load working conditions to continuously optimize component wear resistance and pressure stability. Our hydraulic assemblies are exported to multiple overseas regions and maintain long‑term stable cooperative relationships with global construction machinery spare‑part wholesalers.

Frequently Asked Customer Questions

Q1: Can this K1056909 K3V112DTP‑9NM9 main pump fit excavator models other than Doosan DX260 and DX260LC?
A1: Cross‑model installation is not supported. Different excavator models adopt main pumps with different flange sizes, solenoid parameters and pressure calibration values. Please double‑check machine model and OEM part number before placing orders.

Q2: What hydraulic malfunctions can this main pump resolve?
A2: It fixes faults caused by worn pistons, scratched valve plate and damaged internal components: weak digging power, sluggish compound movements, poor climbing performance, high hydraulic oil temperature, internal leakage and abnormal knocking noise of main pump.

Q3: Do you offer tiered preferential price for large‑volume bulk orders?
A3: Yes, volume‑based discount policy applies according to purchase quantity. We are also able to arrange full‑container sea shipment to reduce comprehensive logistics costs.

Q4: What packaging measure is adopted for long‑distance ocean‑going transportation?
A4: Anti‑rust oil is evenly coated on all metal surfaces. The whole pump is wrapped by waterproof shock‑resistant PE film, then secured inside reinforced export‑grade plywood case, to prevent collision deformation and moisture corrosion during long overseas transit.