Piston pump
K5V80S
K5V80S single pump, 6–10 t hydraulic excavator and industrial open circuits
K5V80S is an axial piston pump assembly in the FLUTEK catalogue, K5V80S single pump, 6–10 t hydraulic excavator and industrial open circuits. Catalogue figures: 80 mL/r displacement, 34.3 MPa rated pressure, 39.2 MPa peak, 529 N·m maximum input torque. It is ordered in the field as K5V80, K5V80DT.
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Photo pending: currently shows a K3V112S unit from the same series. A K5V80S photo is being prepared.
Compatibility — which machines this fits
Fitment lists are compiled from public market data; contact us to confirm your exact machine and shaft / control variant.
Specifications
| Displacement | 80 mL/r |
|---|---|
| Rated pressure | 34.3 MPa |
| Peak pressure | 39.2 MPa |
| Max. speed | 3,000 min⁻¹ |
| Max. self-priming speed | 2,460 min⁻¹ |
| Max. input torque | 529 N·m |
| Pump line | K5V80S single pump |
| Application class | 6–10 t hydraulic excavator and industrial open circuits |
Cross reference / interchange
Buying against a number from a dismantled machine or an old invoice? Send it to us — we map it to the correct unit.
Key features
- Catalogue-verified specifications
- Shaft, regulator and control variant confirmed before dispatch
- Genuine-grade Korean build
- Full spare parts support (cylinder block, valve plate, swash plate, seal kit, regulator)
Supply & commercial terms
Lead time, packing, freight terms, payment and warranty are confirmed per order on the quotation — ask us and you get them in writing together with the price.
Request a quotation
Model and quantity are pre-filled. Add your machine, destination port and contact details — we reply with price, lead time and shipping options.
Where these figures come from
Specifications on this page are taken from the FLUTEK English catalogue dated 2024-11-25 and match the pumps and swing units we ship as China general agent. Machine fitment lists are cross-checked against our parts books before dispatch — send us your machine and pump nameplate and we confirm the correct shaft and control variant.
Reference data for selection purposes. Please confirm the exact shaft, regulator and control variant with our team before ordering.
Common faults on this unit, and what to check first
The diagnosis guides below start from the symptom, list the checks in the order a workshop should work through them, and say which parts usually solve it. Full index: diagnosis guides.
Noise, vibration and rising oil temperature
Pump and pressure supply
Noise plus heat usually means air, starvation or internal leakage. Which one you have changes what you order.
Case drain flow above specification
Pump and pressure supply
Case drain flow shows how worn a pump or motor is without removing it.
Engine stalls or smokes under load
Pump and pressure supply
When the engine pulls down, the pump is usually asking for more torque than the engine can deliver.
Oil temperature keeps rising
Oil, filtration and the system as a whole
Over-temperature thins the oil and shortens seal life, so every function weakens.
Metal particles, dirty oil, short component life
Oil, filtration and the system as a whole
Contamination is the number one cause of repeat failures. Here is what to do after a failure so the new pump is not destroyed by…
Hoses burst, seals blow, the gauge needle jumps
Valve and pilot control
Hoses failing in the same place, filters splitting or a gauge needle that jumps are transient problems.
Parts that usually solve them
Catalogue lines from the same families. Search the full library by part number from the parts library.