Swing motor · P1
M5X180CHB
M5X180 swing motor / M5X180-FRG14 / FRG20 swing device, 20–25 t hydraulic excavator
M5X180CHB is a swing motor assembly in the FLUTEK catalogue, M5X180 swing motor / M5X180-FRG14 / FRG20 swing device, 20–25 t hydraulic excavator. Catalogue figures: 148.5 / 169.4 / 180.1 cm³ (motor variants) displacement, 34.3 MPa rated pressure, 41.2 MPa peak, 1,210 N·m (max. brake torque) maximum input torque. It is ordered in the field as M5X180, M5X180CHB-10A, M5X180-FRG14, M5X180-FRG20.
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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 | 148.5 / 169.4 / 180.1 cm³ (motor variants) |
|---|---|
| Rated pressure | 34.3 MPa |
| Peak pressure | 41.2 MPa |
| Max. speed | 1,680 min⁻¹ |
| Max. input torque | 1,210 N·m (max. brake torque) |
| Pump line | M5X180 swing motor / M5X180-FRG14 / FRG20 swing device |
| Application class | 20–25 t hydraulic excavator |
| Swing assembly options | Two-stage planetary swing device with built-in relief valve, oil filling valve, anti-rotation valve and mechanical parking brake |
| Assembly reduction ratio | 20.04 (FRG14) / 25.2 (FRG20) |
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.
Cylinder drifts down under load
Boom, arm and cylinder functions
Drift is a leakage question. These checks tell you whether oil is passing the piston seal, the control spool or the holding valve…
Foam or milky hydraulic oil
Oil, filtration and the system as a whole
Foam means air, milkiness means water, and both destroy the lubrication film.
Machine slow or noisy when cold
Oil, filtration and the system as a whole
In low ambient temperatures the oil is the problem, not the pump.
Machine weak when it is hot
Oil, filtration and the system as a whole
In high ambient temperatures the hydraulic system runs near its thermal limits.
Repair the pump or replace it
Oil, filtration and the system as a whole
The decision follows measurable evidence, not the age of the machine.
Swing slow, weak or drifting to one side
Swing, travel and drive assemblies
Slewing feels sluggish or refuses to hold a load. Nine times out of ten it is not the whole swing assembly - this is the order to…
Parts that usually solve them
Catalogue lines from the same families. Search the full library by part number from the parts library.