A compact excavator with an auxiliary hydraulic circuit is not limited to digging. The same carrier can break, drill, rake, grab, cut and handle materials, which changes what a small machine can be used for across a working week.
MINGYI builds multi-function mini crawler excavators in the 0.8 to 6 tonnes class, with the hydraulic arrangements for attachments fitted during assembly. The attachment list is agreed at the ordering stage and recorded against the machine.
One carrier covering several duties
Digging, breaking and drilling are the three duties that most often share a machine. A digging bucket removes the material, a breaker hammer reduces concrete or rock, and an auger drills for piles, posts and anchors, all from the same arm.
Groundcare duties extend the list further. A rake or flail mower cuts and gathers growth, a rotary tiller and soil loosener work the surface, and a grabber, plant grabber or front fork moves the material that results.
Coupler and attachment planning
The coupler decides how quickly the machine changes role. A mechanical coupler keeps the front end simple and light, while a hydraulic coupler allows the change to be made from the seat when the work alternates through the day.
Planning the attachment set is a matter of listing the tasks a contract will actually contain, then working out which of them can be covered by one tool. Items that will rarely be needed are better left off, because the carrier still has to be stable with each tool fitted.
A multi-function machine earns its keep by removing the need for separate plant. Specified around a realistic list of duties, one compact excavator with a coupler and a settled attachment set can cover the greater part of a varied workload.
Working a multi-function mini excavator in confined spaces Confined sites are decided by dimensions. Overall width, tail swing and the space needed to work the arm are what let the excavator operate inside a building, between walls or in a courtyard. Ventilation is the other indoor constraint. Running this class of machine inside a closed structure needs air movement, and that is a planning item rather than something to discover after the first hour. Running multi-function mini excavator in a rental fleet Rental fleets buy for utilisation, not for a single job. The unit in daily use with a quick coupler and a common attachment standard is hired more often because it suits more of the calls that come in. The specification that rents best is usually the simplest one to explain at the counter. A machine of this size with rubber tracks, a canopy and a coupler covers the majority of weekend and short-term hires. Export packing and shipping of multi-function mini excavator Machines leave the factory prepared for container or flat rack shipment. The equipment on site is normally shipped with the attachment set and the spare parts list agreed in advance so the container is planned once. Export documentation, decals and paint are settled before packing. Asking for them with the machine itself order avoids a second handling session and keeps the machine on the booked vessel. Parts, service and support for multi-function mini excavator Support after delivery is a parts question. Wearing items for the model in question - filters, belts, track components, bucket teeth and pins - are the items a buyer should plan to hold before the first service interval. Engine parts availability usually drives the engine choice. The machine in that duty built with an engine the local network already carries is serviced from stock rather than from an international order. Quick coupler practice on multi-function mini excavator Couplers are specified early because they affect the arm and the hydraulic kit. Adding one to the unit on the job after delivery means new pins, new hoses and a fitment session; adding it at build time is a line on the sheet. For a fleet that shares attachments between machines, a common coupler standard matters more than the coupler brand. A machine built for the work that picks up the same tools as the larger machines keeps the rack usable across the yard. Hydraulic circuits on a multi-function mini excavator Auxiliary hydraulic lines are what let a machine drive a tool rather than only a bucket. The equipment in service specified with the right circuits and flow runs a breaker or an auger without an add-on power pack bolted to the frame. Hydraulic specification is easier to settle at build time than to correct later. The excavator delivered without auxiliary lines can still dig, but every additional tool becomes a retrofit project. Landscaping and ground care with this class of machine Landscape contractors use the unit in daily use for planting holes, pond excavation, grading and retaining work. The machine is light enough to cross finished lawn and narrow enough to work between established trees. Grass cutting heads, rakes and tillers extend a machine of this size into ground care. The same carrier that digs a border in spring can cut and clear the same area later in the season. Operator technique for the equipment on site The second habit is tool discipline. Running the machine itself with the right bucket width for the trench means less spoil, less reinstatement and a cleaner job than a wide bucket and a lot of trimming. Stability is the third. The model in question working across the tracks rather than over the corners keeps the machine steady and the undercarriage loaded evenly, which shows up as track life at the end of the season. Engine options behind the machine in that duty Power unit selection is settled against the service network the buyer already uses. MINGYI offers Kubota D722, Kubota D902, YANMAR, Changchai, Laidong, Runtong, YARMAX, Youpu 2V80 and Youpu 195, so a fleet running one brand of engine can keep the same filters, the same parts supplier and the same mechanic. Engine choice is also an emissions and documentation question for some markets. Listing the available units with the unit on the job enquiry lets the factory confirm what can be supplied and documented for the destination country. Working on slopes and uneven ground with a machine built for the work Slope work is a stability question before it is a traction question. Knowing the gradient the equipment in service is rated for, and working across rather than straight up where the ground allows, removes most of the risk. Ground that looks level often is not. The excavator crossing a filled trench, a soft edge or a hidden void behaves differently from one on undisturbed ground, and those are the places worth walking before driving. Working near live services with this class of machine Digging near water, gas and cable is a precision job. The unit in daily use is used here because the operator can work in short controlled cuts and because the machine can be positioned without driving over the run being exposed. The risk on utility work is not machine power but machine placement. A machine of this size that fits the working width leaves the surrounding ground undisturbed, which keeps the trench stable and the reinstatement small. Canopy or enclosed cab on the equipment on site A canopy keeps the machine light and the operator aware of the surroundings, which suits short jobs in warm weather. A fully enclosed cab is specified where rain, dust or cold are part of the working year, and it can be added to the machine itself as a retrofit rather than only at build time. Enclosure also changes noise and dust exposure. A sealed cab on the model in question keeps dust out on dry sites and lets the machine work through weather that would otherwise stop a canopy machine for the day. Specification data for the machine in that duty Buyers comparing the unit on the job usually start from four numbers - weight, digging depth, reach and transport width - because those are the ones that decide whether the machine can be delivered and whether it can do the job once it is there. Figures are factory figures and are confirmed on the build sheet for a machine built for the work. Where a job sits between two models, the larger machine usually takes less time than the smaller one spends on rework. Hard and abrasive ground reverses the specification. On rock, demolition rubble or sharp gravel, steel tracks with rubber blocks on the equipment in service survive conditions that cut a rubber belt quickly. Mixed sites are common and argue for a compromise specification. Most buyers choose rubber for the excavator and accept the wear, unless the majority of the work is on material that will damage it.
Reference specification — mini excavator range 09W 12W 20-3W 30-2W Operating weight 1100 kg (2425.08 lb) 1200 kg (2645.55 lb) 1900 kg (4188.78 lb) 2700 kg (5952.48 lb) Transport size (L×W×H) 1800 × 750 × 1970 mm 2200 × 930 × 2250 mm 2550 × 1100 × 2200 mm 3000 × 1100 × 2700 mm Max digging depth 1250 mm (49.21 in) 1630 mm (64.17 in) 1800 mm (70.87 in) 2200 mm (86.61 in) Max digging height 2800 mm (110.24 in) 2750 mm (108.27 in) 2820 mm (111.02 in) 3000 mm (118.11 in) Max dumping height 1700 mm (66.93 in) 1960 mm (77.17 in) 2050 mm (80.71 in) 2000 mm (78.74 in) Max digging radius 2570 mm (101.18 in) 2900 mm (114.17 in) 3050 mm (120.08 in) 3800 mm (149.61 in) Max digging distance 1869 mm (73.58 in) 2100 mm (82.68 in) 2300 mm (90.55 in) 3050 mm (120.08 in) Minimum turning radius 1000 mm (39.37 in) 1300 mm (51.18 in) 1450 mm (57.09 in) 1750 mm (68.9 in) Travel speed 3 km/h (1.86 mph) 3 km/h (1.86 mph) 5 km/h (3.11 mph) 7 km/h (4.35 mph) Gradeability 30° 30° 30° 30° Fuel consumption 1-1.3 L/h (0.264—0.343 gal) 1-1.3 L/h (0.264—0.343 gal) 2-3 L/h (0.528—0.793 gal) 2-3 L/h (0.528—0.793 gal) Fuel tank capacity 8 L (2.11 gal) 10 L (2.64 gal) 16 L (4.23 gal) 16 L (4.23 gal) Hydraulic oil tank 16 L (4.23 gal) 16 L (4.23 gal) 18 L (4.76 gal) 20 L (5.28 gal) Dozer blade lift height 180 mm (7.09 in) 180 mm (7.09 in) 180 mm (7.09 in) 230 mm (9.06 in) Dozer blade drop depth 210 mm (8.27 in) 210 mm (8.27 in) 210 mm (8.27 in) 280 mm (11.02 in)
Q. What is this class of machine?
A. The compact class exists for the jobs in between - too much for hand tools, too tight or too short for a full-size machine. Tracks, cab and attachments are options across the range, so the core decision is simply where the machine must fit. MINGYI builds the 08, 12 and 18 models covering the 0.8 to 6 tonne class, and the unit in daily use is where that range meets multi-function.
Q. How do I choose the right machine for mixed work?
A. List the jobs in a normal month, find the narrowest access and the deepest dig, then size the machine to both. Send the list to the factory by email or LINE and the recommendation comes back matched to the work, not to the stock.
Q. Does MINGYI supply attachments with the machine?
A. Yes - buckets, breakers, augers, rakes and the rest of the working set ship with the carrier, matched to the hydraulic flow and the coupler. For multi-function the package is confirmed on the build sheet, so machine and tools arrive together and start work together.
Planning the season around a machine of this size
The calendar decides more than the specification does. Planning when the equipment on site will be working, when it will be serviced and when it can be spared keeps the maintenance out of the weeks that matter.
Packing, loading and shipment of the machine itself
How a machine travels decides how it starts on arrival. Securing the model in question against movement, protecting the exposed cylinders and keeping the battery and fluids in the right state for the voyage all belong to the packing list.
Storage and long idle periods for the machine in that duty
A stored machine should be brought back carefully. Before the unit on the job returns to work the fluids, the brakes and the controls are checked, because months of standing change more than a weekend does.
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