Doosan K1029621 hydraulic pump for Doosan DX235 midi excavator
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+86 189 289...
+86 189 2896 5241
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Product Overview
This aftermarket axial piston main pump K1029621 is the core hydraulic power unit engineered for Doosan DX235 series excavators. It transforms engine torque into adjustable high‑pressure hydraulic flow to support digging, lifting, swinging, traveling and combined multi‑action operations under heavy‑load construction scenarios. This replacement pump is widely sourced by overseas repair workshops, equipment rental companies and spare‑part distributors for on‑site pump swap and full hydraulic system refurbishment.
During long‑term harsh site operation, the original pump will suffer from contaminated hydraulic oil, frequent pressure surges and continuous heavy loading. Common defects include cylinder block wear, piston shoe erosion, valve plate scratches and amplified internal leakage. Typical machine malfunctions cover insufficient digging power, slow compound actions, traveling weakness, excessive hydraulic oil temperature, noticeable pump humming vibration and sharp pressure drop under excavation load. Once the main pump fails, the whole machine will stop working and bring extra repair losses to project owners.
Our aftermarket pump strictly copies original installation dimensions, shaft spline specifications, port layout and regulator setting parameters. Direct replacement is achievable without any modification, shortening equipment downtime effectively. Comparing with high‑cost genuine parts with unstable lead time, this aftermarket hydraulic pump delivers dependable performance and meets mass purchasing demand for Doosan mid‑size excavator spare‑part dealers.
Core Selling Points
1. High interchangeability for DX235 original hydraulic assembly
All mounting sizes, spline teeth quantity, oil hole position and regulator installation face are produced according to original sample standards. Maintenance technicians can finish replacement work directly without re‑drilling or adaptor adjustment, greatly improving maintenance efficiency for job‑site repair.
2. Reinforced friction pair for tough working circumstances
Many low‑cost substitute pumps wear rapidly when working with aged hydraulic systems containing tiny impurities. Our key friction parts adopt enhanced heat‑treatment process, boosting anti‑impact and anti‑abrasion capability, lowering failure frequency for machines working in mining, earth‑moving and stone‑loading sites.
3. Full‑off‑bench inspection before delivery
Every finished pump goes through complete pressure resistance test, flow detection and sealing check on professional hydraulic test bench before packing. Potential defective units are filtered in factory side, minimizing rework risk for end users and avoiding unexpected construction halt.
4. Cost‑effective aftermarket solution for equipment fleet management
Genuine original pump carries high procurement cost and long delivery cycle. Our aftermarket pump balances reliable performance and competitive price, helping machinery owners and repair shops control overall overhaul budget for DX235 fleets.
5. Flexible shipping solution for wholesale buyers|
Products in stock support fast delivery after payment confirmation. Air shipping is available for urgent breakdown repair orders; sea consolidated shipment and FCL options help bulk importers cut overall logistics expenditure.
Manufacturing Capacity
Our factory focuses on aftermarket hydraulic component production for Korean and Japanese brand excavators, covering main hydraulic pumps, travel gearboxes and swing motors. We own complete production chains including raw material forging, precision machining, heat‑treatment processing and finished‑product bench testing. Simulated heavy‑load working tests are conducted to verify component durability matching real‑world construction conditions. Our spare parts are exported to many overseas markets, building stable long‑term cooperation with global construction machinery spare‑part wholesalers.
Customer FAQ
Q1: Can K1029621 hydraulic pump fit other Doosan excavator models?
A1: We do not recommend cross‑model installation. Different pump models differ in shaft spline, regulator setting and pressure parameters. Please confirm your machine model and OEM part number before ordering.
Q2: What machine problems can this hydraulic pump solve?
A2: It solves malfunctions caused by inner component wear: weak digging force, lag‑combined movements, overheated hydraulic oil, internal leakage and abnormal pump noise.
Q3: Can I get volume discount for large‑quantity purchase?
A3: Tier‑based preferential price is available according to purchase quantity. Full container sea transport arrangement is supported to reduce comprehensive logistics cost.
Q4: How about export‑oriented packaging?
A4: Anti‑rust grease is coated on all metal working surfaces. Pump is wrapped with waterproof shock‑absorbing PE film, then fixed inside reinforced export plywood case, preventing rust and collision damage during long‑distance ocean transportation.