KP30.29-A8S9-LMD/MB-45-BSH/PLP Gear Pump For Sunward SWE907 excavator

Short Description:

840220120 variable axial plunger pump, upgraded replacement part number 840220140, is aftermarket hydraulic spare part for Komatsu large wheel loader.

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Product Detail

Product Tags

description

product parameters

Part No：KP30.29-A8S9-LMD/MB-45-BSH/PLP
Product Type：High Pressure External Gear Pump
Applicable Equipment：Sunward Intelligent SWE907 Excavator
Control Mode：Fixed displacement external gear structure
Displacement：29 cc/rev
Nominal Working Pressure：22 MPa (220 bar)
Max Instantaneous Peak Pressure：26 MPa (260 bar)
Rated Rotation Speed：2200 rpm
Max Allowable Rotation Speed：2800 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +105℃
Main Material：Cast iron housing, hardened alloy steel gear pair, FKM fluorine rubber seal
Surface Treatment：Precision grinding, surface hardening, stress relief annealing, anti-rust coating
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested

advantage

- Low pulsation gear profile for stable pilot pressure during frequent operation
Optimized gear tooth profile reduces flow ripple, maintaining steady pilot pressure during frequent boom, bucket and swing operations, improving joystick control consistency.
- Compact integrated structure, suitable for limited space of small excavator engine compartment
Highly integrated compact design saves installation space, convenient for disassembly and maintenance inside the tight engine bay of SWE907 small excavator.
- Hardened gear pair improves wear resistance under contaminated hydraulic oil
Surface hardening gear pair tolerates minor solid particle pollution, extending service life under dusty construction site environment.
- Excellent pressure retention prevents pilot pressure drop during intermittent operation
Low internal leakage avoids pilot pressure decay during intermittent operation, eliminating delayed or sluggish machine response.
- Strong anti-vibration cast housing adapts to bumpy site working conditions
Stress-relieved cast body resists continuous vibration generated by uneven ground travel and impact during bucket digging.
- Cyclic pilot load bench test simulating small excavator daily earthmoving work
Each pump undergoes long-cycle pilot load test to verify stable performance under repeated digging, swinging and traveling cycles.

FAQ

Q1: Which machine does KP30.29-A8S9-LMD/MB-45-BSH/PLP gear pump fit?
A1: This hydraulic gear pump fits Sunward Intelligent SWE907 excavator. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this gear pump support?
A2: It provides constant pressure hydraulic oil for pilot control, charge oil and cooling circuit, used for earth excavation, site leveling and small infrastructure construction projects.

Q3: What are typical failure symptoms of worn gear pump?
A3: Typical symptoms: insufficient pilot pressure, slow and sluggish joystick response, fluctuating pilot pressure during compound movements, abnormal noise under high pressure, obvious temperature rise during continuous operation, shaft seal oil leakage.

Q4: What inspections should be done before installing new gear pump?
A4: Inspect pilot control valve, hydraulic hoses and filter elements. Fully flush hydraulic tank and pipelines to remove metal debris. Replace degraded hydraulic oil before assembly.

Q5: Why excavator still has weak pilot control after pump replacement?
A5: The fault may not come from pump. Check relief valve calibration, stuck valve spool, clogged filter, damaged seals or trapped air inside hydraulic circuit. Air bleeding must be completed after installation.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.