To Top
Cart 0
   
The item(s) you want to add may not be available for purchase from your Wish List in the future. Consider purchasing the item(s) now, and check your local store if we are out of stock online.
Do you still want to add these items to your Wish List?

LEGO Technic Bucket Wheel Excavator (42055)

More Images

LEGO Technic Bucket Wheel Excavator (42055) -  LEGO - Toys"R"Us
LEGO Technic Bucket Wheel Excavator (42055) -  LEGO - Toys"R"Us
LEGO Technic Bucket Wheel Excavator (42055) -  LEGO - Toys"R"Us
Limit 3 Items per customer
The item is unavailable and cannot be added to your cart.
Please make a selection to add to registry.
Add To Registry
Please make a selection to add to wish list.
Add To Wishlist
Shipping:

Multiple shipping options available. Details


Things to Know

  • Don't forget the batteries. (Click here)

  • Gift wrap is not available for this item.

  • Gift givers, please note that this item may be shipped in the manufacturer's original packaging, which may reveal what's inside.

  • This item is sold in our stores. Please check your local store for availability.

Special Offers

FREE Shipping on ANY purchase of $29 or more. Surcharges may apply on heavy/large items. - Free Shipping (See Details)


LEGO® Technic Bucket Wheel Excavator 2-in-1 Building Set

Junior builders can role-play construction scenarios and discover a gold mine all their own with the LEGO Technic Bucket Wheel Excavator 2-in-1 Building Set. This heavy piece of machinery comes with a LEGO Power Functions motor, which runs an array of motorized functions, including forward and reverse driving, a rotating superstructure and a working boom with revolving bucket wheel. The rugged mine truck can wait under the moving conveyor belts to gather and transport the rare material for advanced processing. When young construction workers have had their fill, they can rebuild the 3,929 pieces in this set to construct the awesome Mobile Aggregate Processing Plant.

Product Highlights

  • LEGO Power Functions motor supplies power to the forward and reverse driving, rotating bucket wheel, moving conveyor belts, rotating superstructure and working bucket wheel boom
  • Includes hand-railed walkways, lights, mined-material elements and a rugged mine truck
  • Two-in-one model rebuilds into the Mobile Aggregate Processing Plant
  • Mined material moves from the bucket wheel to the conveyor belts to the waiting mine truck
  • Rotate the massive superstructure with the joystick
  • Bucket Wheel Excavator measures over 28"L x 11"W x 16"H
  • Mobile Aggregate Processing Plant measures over 34"L x 8"W x 12"H with boom extended
  • Contains 3,929 pieces
  • Requires six AA batteries (not included)
  • Suitable for ages 12 - 16 years

What's Included

  • LEGO Technic Bucket Wheel Excavator
  • LEGO Power Functions motor
  • Mine truck
  • Additional accessories
Mechanical operation
Equipped with a LEGO Power Functions motor, this excavator boasts a wide array of motorized functions, including forward and reverse driving, a rotating bucket wheel, moving conveyor belts and a working bucket wheel boom.
A day at the worksite
This set also comes with hand-railed walkways, lights, mined-material elements and a rugged mine truck to add to junior excavators' realistic role play.
Two-in-one model
Young builders can reconstruct the wheel excavator into a Mobile Aggregate Processing Plant for additional jobsite fun.
Out of the quarry
The mine truck can transport the precious gems and rare finds around the worksite.

Product Description

CHOKING HAZARD - Small parts. Not for children under 3 yrs.

Enter the world of mining on a colossal scale with the massive Bucket Wheel Excavator the largest LEGO® Technic set to date! This highly detailed 2-in-1 model has been designed to provide an immersive and rewarding build and play experience, and comes with array of motorized functions, including forward and reverse driving, moving conveyor belts, working boom with revolving bucket wheel, and a rotating superstructure. You can even rebuild the model to create a Mobile Aggregate Processing Plant.

The LEGO Technic Bucket Wheel Excavator (42055) Features:
  • Features a LEGO® Power Functions motor for an array of motorized functions, including forward and reverse driving, rotating bucket wheel, moving conveyor belts and rotating superstructure

  • Also features hand-railed walkways, lights, mined-material elements and a rugged mine truck

  • Activate the motorized conveyor belts and bucket wheel

  • 2-in-1 model: rebuilds into a Mobile Aggregate Processing Plant

  • Bucket Wheel Excavator measures over 16 inch (41 centimeter) high, 28 inch (72 centimeter) long and 11 inch (29 centimeter) wide

Features

  • Features a LEGO Power Functions motor for an array of motorized functions, including forward and reverse driving, rotating bucket wheel, moving conveyor belts and rotating superstructure
  • Also features hand-railed walkways, lights, mined-material elements and a rugged mine truck
  • Activate the motorized conveyor belts and bucket wheel
  • 2-in-1 model: rebuilds into a Mobile Aggregate Processing Plant
  • Bucket Wheel Excavator measures over 16 inch (41 centimeter) high, 28 inch (72 centimeter) long and 11 inch (29 centimeter) wide

Additional Info

396634

0289D21D

673419248723

6137063

12.9 pounds

22.9 x 18.9 x 6.6

How to Get It


  • This item can be shipped to the entire United States including Alaska, Hawaii, and all U.S. territories including Puerto Rico
  • This item can also be shipped to APO/FPO addresses and to P.O. Boxes in all 50 states
  • Due to shipping restrictions, Ship Charges will be separate from other items in your order
  • This item will ship by itself


  • This item may be shipped via Standard Shipping, Expedited Shipping or Express Shipping
  • Please Note: Some addresses are eligible for Standard Shipping only (APO/FPO, P.O. Boxes, U.S. Territories and Puerto Rico)

(learn more):


  • Please wait for the Ready for Pickup e-mail before proceeding to the store; orders must be picked up within 5 Days upon the receipt of this email
  • You will have the option to designate someone else to pick up your order during the checkout process
  • You will be able to change the Store Pickup location during the checkout process
  • In-stock status is approximate and may not reflect recent sales
  • Orders placed for Store Pickup will receive online pricing and promotions
This item may be shipped in the manufacturer's original packaging, which could reveal the contents of the box

Average Customer Rating:

by PowerReviews
LEGO Technic Bucket Wheel Excavator (42055)
 
4.7

(based on 55 reviews)

Ratings Distribution

  • 5 Stars

     

    (41)

  • 4 Stars

     

    (11)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (0)

96%

of respondents would recommend this to a friend.

Pros

  • Creative (5)
  • Fun (3)

Cons

No Cons

Best Uses

  • Imaginative play (4)
  • Motor skills development (4)
    • Reviewer Profile:
    • Grandparent (4), Collector (3)
    • Was this a gift?:
    • No (4), Yes (3)

Most Helpful Positive Review

 

Good set with a few drawbacks.

The goods: 1. Loads of parts!! Just too many parts in the box and the weight almost breaks the yellow LEGO vinyl bag. If you ordered it from Internet, give some praise...Read complete review

The goods: 1. Loads of parts!! Just too many parts in the box and the weight almost breaks the yellow LEGO vinyl bag. If you ordered it from Internet, give some praise to your delivery people. 2. It's not just many parts. This set contains loads of square frame parts and gears which are super useful in any MOC designs. If you want to dive into Technic building, this set is a MUST buy set. 3. Many functions. Rolling conveyor belts and bucket wheel operation are already worthwhile to make a contraption. This set also moves forward and backwards and the superstructure rotates. Although the bucket wheel elevation and lower conveyor part rotation are manual but it's not too hard to motorize it due to its sheer size!! 4. Although you can't mount a Minifigure, this model is actually a one of few Minifigure sized Technic models. The cockpit can contain a Minifigure if you modify the seat with a proper studded one. (This is a definite plus for anyone wants to play with!!) 5. The finished A model is a huge contraption but is actually very sturdy. You can carry this heavy contraption by holding the top part of the arch!! The bucket wheel arm itself is really sturdy as well. You can even wield it around without problem. The drawbacks. 1. Too many parts and gears: causes too much backlash and almost impossible to debug when something isn't working well. I've changed the tandem clutch wheels with 24 teeth gears to ensure smooth bucket wheel operation (see one of my pictures.) But this isn't safe especially if any mineral(or Skittles!!) stuck into some corner to hamper any motorized operation. It's gonna break rest of gears or overheat PF XL motor. 2. The backlash is severe. For example. The lower conveyor belt lock is almost invalid. Even though you engage the lock, the conveyor belt slides like +30 to -30 degrees without any serious impedance. 3. In other words, this set is super hard to make it operate properly. Although putting parts together is not hard at all(since this model doesn't have any pneumatic hoses and threads), fitting all the parts to ensure smooth operation is a great challenge. The hints on instruction manual aren't enough. You are warned!! 4. B model instruction is only available on the Internet. Browsing through hundreds of PDF pages (especially without proper index codes!!) isn't convenient at all. 5. The control panel has many functions. But the operation is kinda limited. You cannot mix any rotation with linear movement. i.e. The bucket wheel cannot rotate when the excavator is moving forward. A MOC project to work on!! Although I've pointed out as many drawbacks as pros, it's not a bad model for the size. Heck, this is the largest PF motorized Technic model (excluding fan designed MOCs) so far. Remark: You better visit Bulk Barn to play with this model properly!! Skittles!! Skittles!! more Skittles!!

VS

Most Helpful Critical Review

 

This set has exceeded Technic's limits

As a seasoned lego builder I have an understanding how to build these Technic sets. This set is really impressive but I doesn't function as it should. The forward/reverse driving is jerky....Read complete review

As a seasoned lego builder I have an understanding how to build these Technic sets. This set is really impressive but I doesn't function as it should. The forward/reverse driving is jerky. The rotary bucket assembly jams where the 1/4 ring gears join because the ring isn't rigid enough to maintain a tight circle. The pinion gears that the bucket assembly rides on don't sit parallel to each other causing uneven load on the ring gear. I sent pictures to lego and they are sending new ring gear parts but I doubt this will fix the problem. During the assembly I made sure that all the gears were turning freely with no resistance as required for this type of set. I verified that everything was assembled correctly 3 times and still couldn't get this to work. In the pictures you can see the gear tooth spacing at the connection points of the ring gear are too wide for smooth operation.

Reviewed by 55 customers

Displaying reviews 1-10

Back to top

Previous | Next »

 
4.0

Close, but ......

By DUKE1950

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

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 ....

 
5.0

This thing is HUGE!

By ThouroughlyImpressed

from Cincinnati

Comments about LEGO Technic Bucket Wheel Excavator (42055):

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.

 
5.0

Great set

By corey2006

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

this set was very fun to build and i love the features.

 
5.0

Brilliant!

By Cookieboy

from Belmont

Comments about LEGO Technic Bucket Wheel Excavator (42055):

Thoroughly enjoyed every aspect of this LEGO set, instructions are nice & clear & easy to follow. There are only 2 negatives, 1: Forward & reverse is quite jerky as is the bucket wheel. 2. The large LEGO pieces provided for the bucket wheel drop out the bucket late & miss the conveyor, they instead land between the wheel & the conveyor causing a jam, only the small pieces are suitable. This model makes the ultimate show piece in my display cabinet! I look forward to their next "big" creation! Oh...& I slightly modified the drivers cab to accommodate a construction mini figure even though he's not actually to scale, looks cool though!

 
2.0

Great Build But Disappointing Play

By nschreiner

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

If you are looking for a long challenging build then I highly recommend this set. There are some very intricate parts that require great attention to detail. If you are looking for functioning set then skip it. The motor and moving functions are a total joke. Lego says that its suppose to move slow and that's fine but when the wheel can't even rotate through a pile of Lego to scoop up pieces then its not about speed but power. And this set is seriously lacking in power. Bottom line is this piece will make a great addition for a collector but don't bother if you someone who actually wants to play with their Lego set.

 
5.0

Fantastic build, burned out clutches

By KendotC

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

I spent a looooong time building this thing over a period of a few months, 30 min a night. Fantastic build--I was constantly amazed at how it was designed. Intricate details, amazing drivetrain design --aside from the fact that the clutches slip all. the. time. I don't mind that it's slow; that's fine. It's that it stops running for multiple seconds at a time until the wheel is nudged. Kinda disappointing. I don't want to replace the clutch gears with solid gears, because I know that would end up breaking the whole thing. But it's so frustrating to watch it run empty and still stall out repeatedly. I was extremely careful on my build to make sure everything was nice and loose and turned easily, to no avail. So to sum up, the build experience is fantastic. The play experience is frustrating.

 
5.0

It's HUGE! Biggest Set I Own To Date

By HenryDash0421

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

When I first saw leaked images of this set online, I immediately fell in love with it. I wanted it as soon as possible and the wait was agonizing, because it looked just magnificent. I was a bit worried at first when I saw reviews of the set on Youtube, since most people said that the playability of the set was terrible. Nevertheless, I still wanted the set for its sheer complexity and its magnitude of pieces. And I do love it. Starting with the building experience, I felt really challenged with the whole process, as I was paranoid about messing up a single step. But that's what makes this set and any other large Technic set engaging. This set fits matches my personality as a Lego builder perfectly, since complexity and a challenge is very important to me. But do be warned: This set requires a HUGE amount of patience and skill to complete. This is not a novice set, believe me. As for looks, I was a little less satisfied, especially on the opposite side of the excavator(the opposite side of what's shown on the box). On that side, most everything was exposed and looked half-baked. This is understandable, because this is after all a huge Technic set where functionality comes before looks. Nevertheless I was still unhappy with the the exposed frames, wire, and bright-colored axles in the build. And now for the crucial part of this set: The playability. Like I said before I was worried that this would be an issue since so many other people think it is, but I must disagree. The slow speed is entirely realistic considering what this set is based off of. As for the ability to pick up set's included "cargo," it's actually not bad. Bucket wheel excavators in general are not designed to pick up things that are on the surface in the ground. They have to dig into the mound of soil around it. While this ability of picking up cargo is not the best, this is preferable to me since it makes the set more realistic that way. Plus, once the cargo is actually picked up, it's fun to watch it go through the neat little conveyor belt systems onto the small truck, which is great even on its own (it could be a separate set) As a whole, this set really did go above my expectations. It is very accurate to the real life excavator: a complex monstrosity that is just under 4000 pieces and its just fun to play with aside from its minor downfalls with looks. I highly recommend this set to anyone who loves a good, challenging building project, as its a great addition for any Lego fan's collection.

 
4.0

Moves at a pace that rivals glaciers.

By SomeoneElseTookMyName

from Undisclosed

Comments about LEGO Technic Bucket Wheel Excavator (42055):

It's a large, fantastic set, with only one problem - it can barely move. Due to its massive size, the piddly little motor provided in the set (XL! Ha!) can barely even turn the bucket wheel, and sometimes not even that. This isn't helped by the clutch-gears on the back, which save the motor from burning itself by overstressing, but severely limit the power the motor is able to deliver. To give you an idea of just how bad this can get, the fastest I've ever seen the bucket wheel move is 5 degrees per second. That's a minute and twelve seconds for every full rotation, in the best circumstances. It normally takes longer than that because there's a lot of friction between the actual gear-wheel and the six small gears that support it. That, and so much down-gearing is required to even make the motor move it AT ALL that it's going to move slowly regardless. And I don't want to hear "but the real thing moves slowly too!" because no, the real thing does NOT move this slowly. It'd be like powering the Titanic with a Prius. It's a fun set to build, but kinda disappointing once you get it running. I'm thinking of setting up a pneumatic motor on the back of it just to get it moving at a decent pace, or a modified electric RC motor. Honestly, anything is better than what comes in the box.

 
5.0

Excavator is a dream

By smickey

from PEI, Canada

Comments about LEGO Technic Bucket Wheel Excavator (42055):

I purchased the excavator and its cool. The dump truck was fun to make also.

 
4.0

This thing is ginormous.

By jfredett

from Gardner, MA, USA

Comments about LEGO Technic Bucket Wheel Excavator (42055):

This thing is huge, it was a heck of a lot of fun to build, and while there are some small things I'd definitely like to tweak, it's a pretty good set overall. I haven't had the trouble with motor skipping, though I can definitely see the potential for same. It's definitely important to have a good mental model of how all the gearing is going to work, reading ahead in the instructions is *super* important if only to gather some understanding of how the whole thing will work. That plus lots of testing of gears ahead of time can avoid a large array of issues. Probably the biggest thing this model has going for it is it's sheer scale. Eight phases of construction, nearly all of the roughly 4,000 pieces used in the A model), a massive gear box situated up at the top of the model where you can really get a good look at it in action. The movement is slow (and thus accurate to an actual Bucket Excavator), but satisfying. It's big and complex, Rube Goldberg-esque in some ways, but it really is a sight to see when it's all put together. That said, there are definitely some decisions I don't care for. First, there are some loose pins left in the model that probably don't need to be there (though it might take a little cleverness to hide them). This is a minor gripe that mostly is a pet peeve of mine, perhaps they represent something on the real machine, but they don't look particularly great on the model. Second, a number of the functions are unpowered, when they very easily could have been. I'd've loved to see the lift/lower actuators given a spot in the gearbox, even if that meant a separate control panel (perhaps lower near the lower conveyor locking panel) and an additional motor (I think I may try to retrofit in such a system at some point in the future). Additionally, the lower conveyor's control system is at best somewhat confusing. Specifically, the 'locked/unlocked/neutral' control doesn't seem to really have any substantive difference drawn between the 'locked' and 'unlocked' state, and even when locked, there is a *lot* of play in that lower conveyor. Practically speaking, I just generally leave it unlocked most of the time. I'm less disappointed by this being unpowered, if it were IR remote controlled, I would more annoyed, but given the functionality is *just* the rotation of the lower conveyor, it's not a big deal. I think the biggest issue with the model is actually that it doesn't have any kind of whole-model rotation (i.e., the tracks are in lockstep, you can go forward, or backward, but cannot counter-rotate to turn). I'm not sure if the real Excavators can do this, so perhaps it's more accurate to have it unable to self-turn, but given how big these things are, they must be able to turn on their own, so it's disappointing to not have that functionality available. I don't think that having independently driven tracks would've been *too* hard, but it definitely would have added more complicated gearing in the base, and probably a few hundred more parts. I view that as a feature, not a bug (I like sets with very high part counts). Overall, I think this is a really fun build, and so far it's definitely got some jaw drops and 'wows' from the people I've shown it to, it's really a pretty big statement sitting up on the shelf next to all the other great Technic models in this construction subtheme. I look forward to the next big set!

Displaying reviews 1-10

Back to top

Previous | Next »

Spoiler Alert! Important Note for Gift Givers!

One or more of the items you are adding to your cart may ship in the manufacturer's original packaging which may reveal what's inside.

To avoid spoiling the surprise, consider shipping this item to another location or selecting "In Store Pick Up" during the checkout process.

I understand this item(s) may ship in the manufacturer's original packaging or I'm picking up in store and would like to add it to my cart.

Cancel Do not add item(s) to cart.

Previous Next