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LEGO Technic Bucket Wheel Excavator 42055 Construction Toy

4.6 4.6 out of 5 stars 455 ratings

  • Build the highly detailed 2-in-1 model featuring an array of different motorized functions
  • Includes LEGO Power Functions such as forward and reverse driving, rotating bucket wheel, moving conveyor belt and rotating superstructure
  • The largest LEGO Technic set every made
  • LEGO Technic building toys are compatible with all LEGO construction sets for creative building

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LEGO Technic Bucket Wheel Excavator 42055 Construction Toy

LEGO Technic Bucket Wheel Excavator 42055 Construction Toy


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Product Description

Enjoy building and operating this massive 2-in-1 Bucket Wheel Excavator construction toy, 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 color 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.

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From the manufacturer

LEGO Bucket Wheel Excavator

LEGO, Technic, Creative Play
  • Features a LEGO Power Functions motor for multiple motorized functions
  • 2-in-1 model rebuilds into a Mobile Aggregate Processing Plant
  • Contains over 3,900 pieces
  • Finished model perfect for displaying on a desk or shelf
  • Provides a fun, immersive building experience for ages 12 to 16

Experience the Huge Bucket Wheel Excavator!

LEGO Technic Bucket Wheel Excavator is the largest LEGO Technic set to date and a perfect gift for those who love a building challenge. This 2-in-1 model faithfully re-creates a real-life mining excavator with a dark blue and yellow color scheme, hand-railed walkways, huge tracks, and a detailed cab. The Power Functions motor activates the conveyor belts, rotates the massive superstructure, and maneuvers the colossal machine into position. Activating the boom lowers the gigantic, digging bucket wheel and conveys the mined material to the waiting mine truck. The finished model is worthy of display on a shelf or desk, or can be rebuilt into a Mobile Aggregate Processing Plant.

LEGO Technic Bucket Wheel Excavator Features and Functions:

Rebuilds into a Mobile Aggregate Processing Plant

Rotating bucket wheel

Huge tracks, conveyor belt, and detailed cab

Motorized functions include moving conveyor belts and rotating superstructure

Rebuilds into a Mobile Aggregate Processing Plant.

Rotating bucket wheel.

Huge tracks, conveyor belt, and detailed cab.

Motorized functions include moving conveyor belts and rotating superstructure.

LEGO Bucket Wheel Excavator Banner - Excavator and rugged mine truck

Excavator and Rugged Mine Truck

What's in the box

  • LEGO Building Elements
  • Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    455 global ratings

    Customers say

    Customers like the quality, complexity and difficulty of the toy building block set. They mention that it's an amazing, impressive and enjoyable build. They also appreciate the value, and appearance. However, some disagree on performance, and size.

    AI-generated from the text of customer reviews

    48 customers mention44 positive4 negative

    Customers are satisfied with the quality of the toy building block. They mention that it's an amazing set, impressive, and enjoyable to build. Some say that the set is fantastic as all Lego products and fun to build, while others say that it doesn't function as it should.

    "...So, although it is completely awesome, huge, and definitely a must have for the serious Technic builder, I just feel a few small things could have..." Read more

    "These Lego building sets are great toys!! I ordered this one next day and it came fast and on time for my son's birthday...." Read more

    "...Maybe the most enjoyable build of any lego set ever. The instruction book is amazing and makes putting this monster of a kit quite easy...." Read more

    "This was a great build, even based againsy other big lego sets. There is so much detail in this set it was great...." Read more

    37 customers mention26 positive11 negative

    Customers find the toy building block complex and challenging to build. They say it's intricate and rewarding. Customers also say the kit is enjoyable to assemble and has a number of cool functions.

    "...My daughters also love these so great for boys and girls!! It is a smart toy that makes kids use their hands, follow directions and exercise..." Read more

    "...the key word here is "build" I had the best time building this amazing kit. Maybe the most enjoyable build of any lego set ever...." Read more

    "...The engineering behind this piece was also amazing, from how it turns to how the bucket scoops work...." Read more

    "...This is not a simple build do not purchase for a rookie builder. Otherwise buy and have a great time!" Read more

    23 customers mention23 positive0 negative

    Customers find the toy building blocks to be challenging and rewarding. They also say it provides hours of building pleasure and a great learning experience. Some say it's a good toy for teens and keeps the family busy for a while.

    "...It is a smart toy that makes kids use their hands, follow directions and exercise perseverance...." Read more

    "This model was a lot of fun to build and even sometimes confusing as I built it...." Read more

    "...It was a fun build as the instructions were clear and the overall product was impressive to look at...." Read more

    "...Beautifully recreated, incredibly accurate, hours of building pleasure.This is a MUST HAVE for the crazed LEGO fan in your life." Read more

    16 customers mention12 positive4 negative

    Customers like the value of the toy building block. They say it's a great buy, worth the effort, and one of the cheapest sets they can purchase.

    "...It will take him a few days to get this built and definitely worth the effort." Read more

    "...For an experience like that, it was worth every dollar. Plus it moves (very slowly)." Read more

    "...It took him quite some time to put it together, but is worth it. Really neat how it works." Read more

    "...The 200+ dollar price tag seems steep but in my opinion as a collector of these models was worth the price and as we all know that value will only..." Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the appearance of the toy building blocks. They mention it's awesome, beautifully recreated, and cool.

    "Awesome looking set, kept me busy for the thanksgiving break. However, the set is lacking behind on power functions...." Read more

    "...The gears are smooth & slow, just like the real machine. Beautifully recreated, incredibly accurate, hours of building pleasure...." Read more

    "This thing is beautiful. It's a complex model and has a number of cool functions...." Read more

    "Cool, big. But it just feels as too much for LEGO set. Also, its hard to find a place for it. This thing is really huge!" Read more

    17 customers mention10 positive7 negative

    Customers are mixed about the size of the toy building block. Some mention it's very big and impressed with the size and complexity of the bucket wheel excavator. They say it requires lots of space and is the biggest and best Lego ever. However, others say that it'd be too much for a Lego set.

    "...So, although it is completely awesome, huge, and definitely a must have for the serious Technic builder, I just feel a few small things could have..." Read more

    "...All of them were small pieces, mostly 3-hole beams, but some gears and various other parts...." Read more

    "Is a good build and very big. But as others have said it is underpowered - perhaps two motors would have been better...." Read more

    "...I can't believe how intricate and at the same time so big. Best set ever! As soon as he is done I will post pictures and let him add his thoughts." Read more

    16 customers mention6 positive10 negative

    Customers are mixed about the performance of the toy building block. Some mention that it works very well, the motors work great, and it's really neat how it works. Others say that the set is impressive, but it doesn't function as it should, the bucket wheel did not operate very smoothly, and the set lacks behind on power functions. The single XL motor is just not powerful enough to turn the bucket, run two conveyors, and other functions.

    "...BUT there is one tiny little issue. IT DOESNT WORK. The motor is so under powered the best most people can get it to do is creep along...." Read more

    "...It works fine after assembled, slow and a little jerky but amazingly well for such a little motor...." Read more

    "Is a good build and very big. But as others have said it is underpowered - perhaps two motors would have been better...." Read more

    "...The single XL motor is just not powerful enough to turn the bucket wheel, run two conveyors and rotate the tower all at the same time...." Read more

    Looks great, but doesn’t work too well.
    4 Stars
    Looks great, but doesn’t work too well.
    Awesome looking set, kept me busy for the thanksgiving break. However, the set is lacking behind on power functions. The white “protecting” gears connecting the motor to the gear box kept slipping and I had to replace them with normal 3:1 gears for the thing to run smoothly. The gearbox mechanical designs are also sub-par. The drive train kept skipping gears. However, if you take the time to fix those issues and be a bit creative, it’s a really great set.Oh and forget about scooping up the dirt pieces they provide you. It barely scoops anything up even on a huge pile of Lego.
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    Top reviews from the United States

    Reviewed in the United States on March 10, 2017
    I saw this featured on YouTube before Christmas and couldn't wait to get it. After all this time checking the Tru stores I figured I was going to have to buy it online.
    Of course, no issues with Amazon, but paid $25 for 2 day shipping, and the carrier dropped the ball, got it in 3 days.
    The box is absolutely massive. Cut the seals and dump out alot of bags, and then a box. Inside the box, more bags!! Almost 3000 parts compose this model.
    Bags are numbered 1-8, corresponding to the phase of build. Phase 1 builds the dump truck, and contains the material for play. Phase 2 builds the frame. Phase 3 builds the tracks. Phase 4 builds the machine frame. Phase 5 builds the exit conveyor. Phase 6 builds the digger wheel. Phase 7 builds the rear of the digger and the power functions. Phase 8 builds the accessories.
    Built the model over 4 days. Being almost 3000 parts, I thought it would be a grueling build, but it wasn't the case. I recently built the Arocs truck, which was tedious. I just wanted to get it built. The Wheel Excavator was fast and enjoyable.
    I checked things as I went, seeing there are a lot of axles and gears in this set. With the motor being at the rear end of the digger frame, getting to the tracks takes a lot of mechanics.
    Finishing the build, I have to say it is quite impressive. However, I have to say using 1 motor for all the functions kind of was a let down. I built the Volvo loader, and it has 4 motors. There are really only 3 functions powered: tracks, wheel/conveyors, and turning the machine. Turning the machine requires the conveyors and wheel running. You can't run the tracks with anything else engaged. Raising/lowering the digger wheel is manually operated, as is rotating the discharge conveyor, which has a locking mechanism, which, from gear backlash is kinda, pointless.
    I realize most of this was engineered to mimick the real machine, but, being a Flagship model, I think things like the railings, the goofy rear access ladder, and the multiple gear boxes could have been reduced to add a couple more motors and some better functuality. IR remote capability like the Volvo loader would have sent this over the top.
    I suppose being Lego it could be reworked to add these in, but I really don't want to take apart the models I have to get the parts to do this.
    So, although it is completely awesome, huge, and definitely a must have for the serious Technic builder, I just feel a few small things could have made this the biggest, baddest set ever made, period.
    Reviewed in the United States on April 20, 2017
    These Lego building sets are great toys!! I ordered this one next day and it came fast and on time for my son's birthday. My ten year old loves to build these!! If you have a child who likes to build things this is the toy to get. My daughters also love these so great for boys and girls!! It is a smart toy that makes kids use their hands, follow directions and exercise perseverance. It will take him a few days to get this built and definitely worth the effort.
    7 people found this helpful
    Report
    Reviewed in the United States on May 1, 2017
    This is a really great build. the key word here is "build" I had the best time building this amazing kit. Maybe the most enjoyable build of any lego set ever. The instruction book is amazing and makes putting this monster of a kit quite easy. And when its finished you will have something that really is a wonder to behold. BUT there is one tiny little issue. IT DOESNT WORK. The motor is so under powered the best most people can get it to do is creep along. And forget trying to get the buckets and belt to move. Ive read several posts on other sites saying the same thing so its not just me. Do I feel I wasted my money on this NO. Do I wish it would work as described, of course. But fot me I can live with it. Bit if youre the type who has to have it run...
    7 people found this helpful
    Report
    Reviewed in the United States on July 4, 2018
    This was a great build, even based againsy other big lego sets. There is so much detail in this set it was great. It took me about 2 weeks to put this whole set together, but I was not rushing it and was doing a little at night after work. The engineering behind this piece was also amazing, from how it turns to how the bucket scoops work. I 100% recommend this for oldrr amd more advanced builders.
    One person found this helpful
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    Reviewed in the United States on November 19, 2018
    Is a good build and very big. But as others have said it is underpowered - perhaps two motors would have been better. I do like how you can easily disconnect three bits to take the motor out of the loop so you can manually move it about. Also it would be cool if there were an alternate set of instructions for the same model that did not quite spoon feed the steps so much. Maybe have 'standard' and 'advanced' sets of instructions? Anyway still good - still five stars!
    One person found this helpful
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    Reviewed in the United States on September 12, 2018
    This model was a lot of fun to build and even sometimes confusing as I built it. As the headline indicates this took me about a week of nights to put together. The 200+ dollar price tag seems steep but in my opinion as a collector of these models was worth the price and as we all know that value will only go up. This is not a simple build do not purchase for a rookie builder. Otherwise buy and have a great time!
    4 people found this helpful
    Report
    Reviewed in the United States on November 29, 2016
    This is the best set ever. I have given my 10 year old grandson many Lego sets--far beyond his age range. He always has them done the first weekend. Not this one! He has been working on it for 3 weeks! He is loving it! On about the 8th bag and 350+ pages into the directions. I can't believe how intricate and at the same time so big. Best set ever! As soon as he is done I will post pictures and let him add his thoughts.
    10 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    crispo
    5.0 out of 5 stars Très bien
    Reviewed in France on June 3, 2021
    Très bien
    Roberto
    5.0 out of 5 stars Un LEGO Technic magnífico!
    Reviewed in Mexico on December 15, 2018
    Un set increíble!! Comencé a comprar LEGO nuevamente después de algunos años y la línea Technic es impresionante. Son productos con precios relativamente elevados, pero que valen cada peso invertido; las piezas son robustas y todo encaja a la perfección.
    Después de aproximadamente 20 horas he ensamblado la excavadora, que es el modelo principal; el manual para construir la separadora de piezas puede encontrarse en el sitio web de LEGO.
    Si eres fan de la marca, esta compra es muy recomendada. El producto final es muy grande, asegúrate de tener un espacio adecuado para lucirlo.
    Con respecto al proveedor, ninguna queja. El paquete llegó en buen estado y a tiempo.
    3 people found this helpful
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    Ale O
    5.0 out of 5 stars fantastica
    Reviewed in Italy on June 4, 2020
    fantastica, come tutti i prodotti di casa lego
    Marcos M. Sáez Baena
    5.0 out of 5 stars Horas de entretenimiento
    Reviewed in Spain on January 17, 2020
    A mi hijo le ha encantado.
    Anita Stalder
    5.0 out of 5 stars Super
    Reviewed in Germany on January 10, 2020
    Vollständig und schnell geliefert