Jining Maxpower Machinery Co., Ltd.
Enterprise dynamics
An excavator finishes loading a truck, then waits for the next one. Elsewhere on the same project, trucks queue beside a machine that cannot load them quickly enough.
Both situations call for a closer look at the loading arrangement—not an automatic equipment upgrade.
For contractors considering the MAXPOWER ME390, excavator truck loading should be assessed as a complete operation: bucket payload, loading time, truck capacity, and the journey to the tipping area.
MAXPOWER lists the ME390 with a 37.5-tonne operating weight, a 1.8 m³ bucket, and rated power of 212 kW at 2,000 rpm.
These figures establish the machine’s size and configuration. They do not establish a guaranteed hourly output. Use the ME390 product specifications as the starting point, then evaluate the material and hauling arrangement.
A 1.8 m³ bucket does not mean a 1.8-tonne payload. Cubic metres measure volume; tonnes measure mass.
For a planning estimate, multiply bucket capacity by the actual fill factor and the material’s loose bulk density. Fill factor describes how fully the bucket fills relative to its rated volume.
Confirm the permitted bucket-and-material load with MAXPOWER. The calculation is not a lifting-capacity rating.
Divide the truck’s permitted material payload by the measured average bucket payload to estimate the required passes.
Do not round up by adding another full bucket if that would overload the truck. The final pass may need a partial load.
HSE’s loading and unloading guidance explicitly warns against overloading vehicles. Truck body volume and payload limits both need checking.
The published ME390 configuration lists a 6,470 mm boom and a 2,900 mm arm. Those lengths alone do not establish clearance above a particular truck.
Request the working-range drawing for the supplied configuration. Compare dumping height and reach with the truck’s sideboard height and planned loading position.
Do not confuse the machine’s transport height with its dumping height.
Time the operation before blaming the excavator.
Record digging, swinging, dumping, truck positioning, and waiting separately. Excessive swing or repeated repositioning can lengthen loading cycles. A truck’s delayed return, meanwhile, can leave the excavator idle even when loading is efficient.
Changing truck arrivals or positioning may be worth testing before changing excavator size.
Ask for a loading demonstration using material and a truck arrangement representative of your project.
Measure completed truck loads and elapsed time, not just one impressive bucket cycle. Note spillage, unnecessary boom movement, and time spent redistributing material inside the body. These are practical sources of wasted movement during loading.
Compare the results against your required output. A demonstration should answer a production question, not simply show that the excavator can dig.
The ME390 has a published overall width of 3,190 mm. Allowing only that width does not establish an adequate operating area.
Plan room for the complete machine movement, truck positioning, and pedestrian separation. HSE recommends firm, level loading areas, even load distribution, and keeping uninvolved people clear.
Use a site-specific loading plan rather than squeezing both machines into the smallest available space.
Provide the material description, truck payload rating, body dimensions, haul distance, and required daily output. Include photographs or a drawing of the proposed loading area.
Ask MAXPOWER to assess the ME390 against that information and confirm the bucket, working range, and supplied configuration. Compare another model from the excavator range when the assessment identifies a genuine capacity mismatch.
The ME390’s specifications are useful, but the purchase decision should connect them to truck payload, loading clearance, and observed cycle times.
An effective loading arrangement keeps material moving without exceeding machine or vehicle limits. The objective is a workable fleet—not the largest bucket or truck.
Contact MAXPOWER with your truck specifications and material-handling requirements. Request a configuration review before selecting the excavator for your loading operation.
MAXPOWER publishes a bucket capacity of 1.8 m³.
No. Payload depends on filled volume and material density.
No. Calculate it from actual bucket payload and truck limits.
No. Check the applicable working-range drawing and loading position.
Only if it remains within all applicable load limits; otherwise reduce the final load.
