Tail swing is the part of the machine that causes trouble on confined sites. On a conventional excavator the rear counterweight swings beyond the tracks and can strike a wall, a parked vehicle or a road. A short tail design keeps the rear closer to the undercarriage.
MINGYI builds short tail swing compact excavators to order. Buyers working along boundaries, in lanes or inside buildings usually specify this layout so the machine can rotate without a bank of spotters watching the rear.
Short tail swing working near walls and roads

On road maintenance and urban work the machine often sits within a lane with traffic passing. Reduced tail swing means the counterweight stays closer to the tracks, so the excavator can turn and load without closing more of the road than necessary.
The same benefit applies beside buildings. When digging footings parallel to a wall, the operator can swing the upper structure to place spoil without the rear overhanging the structure being worked on.
Boom swing and tail radius on confined sites

Tail swing is only one half of the problem. A swing boom lets the operator offset the digging line to one side, so a trench can be cut alongside a wall while the tracks remain clear of it.
Together, the two features let a compact excavator work in places that would otherwise need hand digging. Buyers should confirm the tail radius they need and the boom type when the order is placed.
A short tail swing machine is chosen to keep the rear out of trouble on tight sites. MINGYI supplies compact excavators built to order with the boom layout the work requires.

Lifting and material handling with a short tail swing mini excavator Stability changes with reach. A load the excavator handles close in becomes a different proposition at full extension, so the working radius belongs in the plan before the lift rather than during it. Ground condition under the machine is part of every lift. Soft or uneven support is the common factor in handling incidents, and checking it takes less time than recovering this class of machine that has settled. Orchard, vineyard and farm use of short tail swing mini excavator Orchard and vineyard work is carried out between rows. The unit in daily use with a narrow chassis and a swing boom works down the row without damaging the trees, which is the reason a full-size machine is not used at all. Ditching, fertilising and drainage on farmland suit a machine of this size because the work is spread over a large area in short bursts. The machine travels behind a pickup and works where it stops. Specifying short tail swing mini excavator against a job list The practical way to specify is to write the job list first: the narrowest access, the deepest trench, the heaviest tool and the surfaces the machine must cross. The equipment on site is then matched to those four numbers. Buyers who skip this step either over-buy or under-buy. The machine itself specified only from machine size tends to arrive without the coupler, the circuits or the track type the work actually needs. Hiring versus owning a short tail swing mini excavator Availability is part of the decision. Owning the model in question means it is there on the day the ground is ready; hiring means competing for the same machine at the same time as everyone else in the season. Ownership brings obligations that hiring does not. Storage, servicing, insurance and an operator are the items to set against the hire rate before deciding which way the machine in that duty should be supplied. Operator technique for short tail swing mini excavator Output on a compact machine comes from placement rather than power. An experienced operator keeps the unit on the job working inside the swing arc, positions once and digs a full run instead of repositioning for every bucket. Stability is the third. A machine built for the work 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. Hydraulic circuits on a short tail swing 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. Flow and pressure are matched to the tool, not to the machine size. Asking for the attachment list first means the excavator leaves the factory with circuits that suit the heaviest tool the buyer intends to run. Getting this class of machine through a narrow gap The first question on most job lists is whether the machine can reach the work at all. The unit in daily use is chosen against the narrowest point on the route - a garden gate, a doorway, a gap between two walls - because a machine that arrives and then cannot pass loses a day, not an hour. Access decides the machine before output does. With a machine of this size the limiting dimension is usually the widest point on the way in, so measuring the gate, the corridor and the turning space first saves a wasted delivery and a second visit. What owners should plan for beyond the equipment on site Purchase decision is the visible part of the effort. Fuel, filters, tracks or tyres, the operator and the transport between sites are the items that decide what the machine itself actually demands over a few seasons, and they are worth listing before the order. The useful comparison is demand per working hour, not demand per machine. The model in question that works more hours a year spreads its standing takes over more output, which is why utilisation usually matters more than the invoice figure. Working the machine in that duty in confined spaces Clearance above matters as much as around. Door heights, pipework and overhead services set the limit for the unit on the job indoors, and measuring them first avoids a machine that arrives and cannot be used. Ventilation is the other indoor constraint. Running a machine built for the work inside a closed structure needs air movement, and that is a planning item rather than something to discover after the first hour. Trailering and moving the equipment in service Loading practice matters as much as the numbers. The excavator is driven up ramps under its own power with the boom lowered and the tracks aligned, and secured at the points the manufacturer specifies. Detachable components reduce transport length. This class of machine built with a removable arm section or a folding step fits a shorter trailer and may avoid an oversize movement permit. Parts, service and support for the unit in daily use Support after delivery is a parts question. Wearing items for a machine of this size - filters, belts, track components, bucket teeth and pins - are the items a buyer should plan to hold before the first service interval. Remote support is handled by video. The equipment on site fault can often be diagnosed on a walk-around call with the panel open, which is faster than waiting for a visit and avoids shipping a part that is not needed. Specification data for the machine itself Where the model in question is being specified for a job list, the table below gives the factory figures that matter most: what the machine weighs, how deep and how far it works, and what it measures on a trailer. Every value shown is as built for the machine in that duty; options such as cab, side swing or a telescopic undercarriage change the transport dimensions and are confirmed at order stage. Municipal crews work on streets, footpaths and parks where the public is present. The unit on the job is specified because it occupies little space, works inside a small exclusion zone and can be moved on a standard trailer. Noise and surface protection matter on public work. A machine built for the work on rubber tracks across paving, with a sealed cab for the operator, suits the conditions better than a larger tracked machine.




Reference specification — mini excavator range 13W 15W 20-1W 20-1WL Operating weight 1300 kg (2866.01 lb) 1400 kg (3086.47 lb) 1800 kg (3968.32 lb) 1900 kg (4188.78 lb) Transport size (L×W×H) 2200 × 930 × 2250 mm 2200 × 930 × 2250 mm 2550 × 1100 × 2200 mm 2550 × 1100 × 2200 mm Max digging depth 1630 mm (64.17 in) 1630 mm (64.17 in) 1800 mm (70.87 in) 1800 mm (70.87 in) Max digging height 2750 mm (108.27 in) 2750 mm (108.27 in) 2820 mm (111.02 in) 2820 mm (111.02 in) Max dumping height 1960 mm (77.17 in) 1960 mm (77.17 in) 2050 mm (80.71 in) 2050 mm (80.71 in) Max digging radius 2900 mm (114.17 in) 2900 mm (114.17 in) 3050 mm (120.08 in) 3050 mm (120.08 in) Max digging distance 2100 mm (82.68 in) 2100 mm (82.68 in) 2300 mm (90.55 in) 2300 mm (90.55 in) Minimum turning radius 1300 mm (51.18 in) 1300 mm (51.18 in) 1450 mm (57.09 in) 1450 mm (57.09 in) Travel speed 3 km/h (1.86 mph) 3 km/h (1.86 mph) 5 km/h (3.11 mph) 5 km/h (3.11 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 10 L (2.64 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) 18 L (4.76 gal) Dozer blade lift height 180 mm (7.09 in) 180 mm (7.09 in) 180 mm (7.09 in) 180 mm (7.09 in) Dozer blade drop depth 210 mm (8.27 in) 210 mm (8.27 in) 210 mm (8.27 in) 210 mm (8.27 in)
Q. What is the equipment in service used for?
A. Zero tail swing, retractable frames and short-radius booms exist for one reason: to put a real digging machine through a gap and let it work at full rate on the other side. Inside a basement or behind a boundary the machine digs footings, breaks floors and grades the sub-base at rates hand work cannot touch. MINGYI builds the 08, 12 and 18 models covering the 0.8 to 6 tonne class, and the excavator is where that range meets short tail swing.
Q. How does the machine get through a narrow opening?
A. Retractable or variable-width frames narrow for the passage then widen for stability, and zero tail swing keeps the counterweight inside the track line. Measure the gap first, then match the class - the smallest machines pass where a wheelbarrow would struggle.
Q. How do I get a specification?
A. Send the model, the destination and the attachment list by email or LINE - the channels listed just below this section. The reply covers the specification, lead time, packing and freight in one document, with the short tail swing build sheet attached.
Packing, loading and shipment of this class of machine
Export packing is part of the machine, not an afterthought. The unit in daily use is blocked and braced inside the container so that it arrives in the same condition it left, and the load plan is decided by the dimensions rather than by what fits loosely.
Handover and getting familiar with a machine of this size
The first day with a new machine sets the pattern for the next five years. Handover for the equipment on site covers the control layout, the daily check points and the limits the operator needs to know before the first real load is lifted or carried.
Storage and long idle periods for the machine itself
A stored machine should be brought back carefully. Before the model in question 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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