LEGO Technic - Bucket Wheel Excavator - 42055

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Product Information

Height 48 cm
Width 17 cm
Depth 58.2 cm
Number of Pieces 3927
Range LEGO Technic
Material Plastic
Minimum Age 12 years
Model Number 42055
Product Type Building Blocks
Type Building Blocks
Weight 5.86 kg
Brand LEGO

Why we love this

Experience the huge Bucket Wheel Excavator! Mine on a massive scale with the colossal Bucket Wheel Excavator, including motorised tracks, conveyor belts, bucket wheel and superstructure, plus a rugged mine truck.

Enjoy building and operating this massive 2-in-1 Bucket Wheel Excavator, the largest LEGO Technic set to date! This awesome, meticulously detailed reproduction of a real-life mining excavator comes with a cool dark-blue and yellow colour scheme and an array of authentic features and functions, including hand-railed walkways, huge tracks and a detailed cab. Switch on the included Power Functions motor and you can activate the conveyor belts, rotate the massive superstructure and maneuver the colossal machine into position. Then activate the boom to lower the gigantic, digging bucket wheel and convey the mined material to the waiting mine truck. When you feel like another building challenge, rebuild it into a Mobile Aggregate Processing Plant.

Product Features:



• Features a LEGO Power Functions motor for an array of motorised functions, including forward and reverse driving, rotating bucket wheel, moving conveyor belts and rotating superstructure, plus a working bucket wheel boom.
• Also features hand-railed walkways, lights, mined-material elements and a rugged mine truck.
• Switch on the LEGO Power Functions motor and maneuver the huge tracked structure into position.
• Activate the motorised conveyor belts and bucket wheel.
• Move the joystickto rotate the massive superstructure.
• Raise and lower the huge bucket wheel boom.
• Follow the mined material from the bucket wheel to the moving conveyor belts and all the way to the waiting mine truck!
• This LEGO Technic model is designed to provide an immersive and rewarding building experience.
• This set includes over 3,900 pieces, making it the largest LEGO Technic set to date.
• 2-in-1 model: rebuilds into a Mobile Aggregate Processing Plant.
• This set offers an age-appropria te building experience for ages 11-16.
• Bucket Wheel Excavator measures over 16” (41cm) high, 28” (72cm) long and 11” (29cm) wide.
• Mobile Aggregate Processing Plant with boom retracted measures over 8” (21cm) high, 34” (88cm) long and 8” (21cm) wide, and over 12” (33cm) high with boom extended.
• Mine Truck measures over 3” (10cm) high, 7” (19cm) long and 3” (10cm) wide.

Number of Pieces: 3929

Our customers say

LEGO Technic - Bucket Wheel Excavator - 42055 is rated 4.6 out of 5 by 56.
Rated 5 out of 5 by from good build Challenging but worth it. Not an easy build for an oldy
Date published: 2017-08-08
Rated 3 out of 5 by from Functions glitchy The bucket wheel doesn't turn smoothly so that I have to push it along at least once per rotation and is constantly stopping. The turning superstructure function didn't work at all and the bottom gear is jammed for no apparent reason. It was a blast to build though and looks great, just wish it was a bit smoother with movement.
Date published: 2017-08-07
Rated 5 out of 5 by from Great set and fun build. Pick this set up now before Lego realizes they made an exact replica of an F-50 fighter jet and discontinue the model. Very detailed set of a F-50 right down to the spinning propeller blades. A must have set for any plane enthusiast or if you're in the military.
Date published: 2017-08-06
Rated 5 out of 5 by from HUUUUGE! I love the high part count and complexity of the set. I said it took me 10 hours to build but, I built it over the course of a few weeks when I had time. I actually bought two sets so I could build the aggregate separator and have them work together. They don't. :-( The conveyor for the BWE is too low to feed the hopper on the MAS. Oh well, the kids LOVE playing with them at the kitchen table. I also bought a half gallon size plastic bag of extra "rock" pieces and put them in a glass cake pan and let the BWE scoop them up. It's a great set and I love looking at them every day as they are on display on my chest of drawers in the master bedroom. Glad the wife is long-suffering!
Date published: 2017-07-27
Rated 5 out of 5 by from Lego Joint Strike Fighter!!! I was surfing through alternate regions on the Lego Shop website and ran across this model, initially only available outside of the USA. Was able to find a UK retailer with a US presence who was offering it, so I got it drop shipped from across the pond, about 6 months prior to its US release. Glad to see it finally coming to stores here! First, it's incredibly similar to the F-35 JSF. Functioning VTOL is really well executed. The landing gear is also powered, and works fine, but doesn't lock in place, so if you have the jet resting on it's wheels and your cat runs into it, it will flop onto its belly (the jet, not the cat). There are numerous well executed details, and the overall build is enjoyable with some interesting approaches and a fairly strong design, so playability should be good (I generally build and display more than play). The power cell is easily removed and replaced, making changing batteries quick and easy. It's also tucked up nicely into the underbelly, not detracting in any way from the aesthetic of the jet. The one detractor to the aesthetic is the lack of a clear plastic canopy. The cockpit is very well detailed, and there is a makeshift open canopy, buy a plastic one on this would have completed the package and would have also been very welcomed by rebuilders who would love to make other jets using many of the parts included in this set. There are plenty of pieces to make it a good weekend project, and lots of light blue pieces, which are fairly rare for technic sets. It also includes the anniversary brick included in the 2017 technic sets. Perhaps due to being sourced overseas, the bags weren't numbered, which made it more of an old school build, having to hunt for that single missing piece a couple of times. Maybe the US release will be numbered, but the instructions on here don't indicate it will. Good job on this one, Lego!
Date published: 2017-07-22
Rated 4 out of 5 by from Close, but ...... A great big set and amazing concept. Impressive work obviously done by the LEGO Design Team on this project. Very well organised instructions and packaging. Speed of finished set very realistic. Although I had read the reviews and took a great deal of care in assembly and checked for freedom of movement and alignment of gears, the set still runs very "jerkily" and appears under-powered when digging and crawling. Can LEGO suggest a solution or are they at least working on a solution to the uneven movement problem? Setting the clearance on the gears may be very difficult for some, perhaps a "shim" or "feeler gauge" could be supplied to get the correct clearance to ensure smoother running? Obviously there is a tiny bit of a chamfer on one side of most parts which I suspect is part of the mould release design when making parts, could this be exasperating the problem of inconstant motion? I have been impressed by the evolution of the crane series over the years in both their functionality and complexity, I hope that the designers continue along that path and learn from some of the issues on the Bucket Wheel Excavator which is very good, but ....
Date published: 2017-07-21
Rated 5 out of 5 by from This thing is HUGE! This is by far the biggest Lego set I have ever assembled. It is built rock solid too. I'm pretty sure it wouldn't suffer much if it fell off a shelf. I read reviews saying it is too slow, but it moves probably 5-10 times as fast as actual scale speed would be. I'm glad I built the motorized excavator (8043) a few years ago, the gearbox in this is every bit as complex as 8043's.
Date published: 2017-07-04
Rated 5 out of 5 by from Great set this set was very fun to build and i love the features.
Date published: 2017-06-28
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