LEGO Technic - Bucket Wheel Excavator - 42055

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LEGO Technic - Bucket Wheel Excavator - 42055 features in our LEGO collection

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Product Information

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

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Our customers say

LEGO Technic - Bucket Wheel Excavator - 42055 is rated 4.6 out of 5 by 65.
Rated 4 out of 5 by from Amazing! The wow factor is huge! I thoroughly enjoyed building this set, its a good test of patience and organisation as you build one structure after another. There are a few problems though, one motor to power the entire system is only just enough if it ran smoothly, and even though I made sure the gears were free running as I built, it still had trouble running smoothly afterwards. Unfortunately, making the large yellow gear wheel in sections has meant the teeth don't match up at the join. The 'base tan' of the teeth at that join doesnt match the rest of the gear, causing it to skip at that point. It ran with the lightest of persuasion, just the weight of my finger did it. The only other issue I had was that the tower leans forwards a lot, as you can see in the picture. I've checked the assembly, but can see nothing wrong, is there something that I've missed? Other than those issues, it's impressive. Truly a feat of Lego engineering.
Date published: 2018-04-03
Rated 5 out of 5 by from Mine is eh When I go to actually use it it goes very slow and I hoped that with a xl motor it would go a little faster but other wises its a great set and its worth the money. I've been working with legos since I was 6 and this set was one of the biggest sets I've ever built.
Date published: 2018-04-03
Rated 5 out of 5 by from Wow, this is a great one! TLDR? To summarize, this is the most fun and challenging technic build I have ever done. The scale of the set is just amazing. Right out of the gate the dump truck is a fun build by itself. The working steering and latching dump mechanism make it a great addition to the set. Then you start in on the crawler base. The mechanisms were surprisingly complex, as there are four mechanical functions in the base alone. Here you have the track drive, the superstructure rotation, the output chute rotation and the output chute conveyor drive. There is even a transmission selector here to engage auto rotation of the output chute. Next we build the digging arm with the bucket wheel, main conveyor and tilt mechanism, and the power section with the battery pack, motor and transmission. Finally we pull them all together and add the adornments. By the time it is completed, it is a mechanical marvel. The movement is slow and realistic, and thoughtful design prevents it form damaging itself if it gets bound up. There are a few ares for improvement. First, there is a single motor for the entire model, and it can only power some functions at the same time. You can either engage the tread drive, or the bucket wheel and rotation functions, not both at the same time. Even in crawler drive mode, it drives both treads at the same time with no differential or steering, so it can only travel in a straight line. Upgrade #1, add a differential, or another pair of motors to enable skid-steering. The next issue is the output chute auto rotation. This is selected with a technic shift mechanism, which is cool, but they have a lot of lash (almost 90 degrees) so there can be alot of play in the position of the output shaft. Upgrade #2, find a better coupling for the output chute rotation to eliminate the lash. And while we are at it (Upgrade #3) we should also make the output chute angle adjustable as well. It is just a bit too high for the included dump truck, and parts have a tendency to bounce out. And finally, the model is adorned with lots of simulated lights. These are just begging for a light kit Upgrade (#4). I have no doubt this set will provide me with endless hours of enjoyment making upgrades and modifications. And in the unlikely event I ever get tired of that, the shear volume and variety of parts in this kit are amazing fodder for the grandest of technics machines!. Overall I give this set 5 bricks.
Date published: 2018-02-22
Rated 5 out of 5 by from What a set! After spending hours on the internet to find which set should I buy I found 42055 BWE. At first I wasn't impressed with it as there is a small amount of Power Functions here. BUT... don't be decevied, the mechanism you build is very sophisticated and it gives you so much fun! It was my first set in a while and I bought it as a dream come true (when I was young I wanted to have those big sets but always got small ones). As for the build itself; I don't have much experience with Lego Technic but if you carefully build and always check if the gears can move freely you will have no problems with the end result. A must have!
Date published: 2018-01-29
Rated 5 out of 5 by from Good, But not functioning as advertised. It is a great Lego set, but some parts in the bucket wheel system broke the whole system, and I had to remover them. I'm also very upset about the instructions, as some steps were printed wrong. Like step says (Example I made up), place a 1x2 here, and in the picture you see a 2x6, but the next step does not have the new 1x2, it is saying only at that moment to place the 2x6 in whatever position. No photo until I find the page :P . Please reply and say something as then I know that Lego is taking notice of this issue.
Date published: 2018-01-14
Rated 5 out of 5 by from Bucket Wheel Excavator Great model lots of functions, normally I only buy construction models but I`m glad I got this set.
Date published: 2018-01-13
Rated 5 out of 5 by from Great Challenge for any enthusiast I decided to revisit my favourite childhood toy as an adult and decided on this as it represented the biggest challenge (as the biggest ever lego technic product). I was not disappointed. I thoroughly enjoyed the build which took me roughly 20 hours spread over a few days with the instructions as easy to follow as I remember them. There were a few challenging parts to the build and upon completion, I did need to troubleshoot for a few hours due to a movement issue. The tracks moved backwards easily but forward caused some clicking sounds. This turned out to be a loose yellow rood which wasn't quite holding the gears in place that directed the power down through the model. As soon as the gears were secure, the model moved fine. As a toy, I assume it won't be able to excavate my garden but it looks amazing and I can't wait to build the B model.
Date published: 2018-01-08
Rated 5 out of 5 by from Buy two! Based on the sheer amount of parts and the scale of this set, it's incredible value for money. From reading some of the other reviews I can see some are having issues with this set; this is testament to its challenge - it does work, flawlessly, if you take care to test the gear trains and moving parts as you build them. Some of the movement is slow and the bucket wheel itself sits a bit tight in its guides; may need to dismantle and adjust - to my mind the slow movement is needed to shift the sheer weight of this set with the XL motor. Very enjoyable; especially when you're adding things to the sub-assemblies (baffled) just to find out they're there just for the details at the end! Anxious to build the alternative instructions but can't bear to disassemble it, so I suppose I'll have to buy the set again!
Date published: 2017-12-16
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