# LEGO 42055-1 — Bucket Wheel Excavator (2016)

Source: https://www.brickmissing.com/sets/42055-1-bucket-wheel-excavator
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

The LEGO Technic 42055-1 Bucket Wheel Excavator replicates a real-world mining machine. This 3929-piece model, a substantial set from 2016, features a dark-blue and yellow color scheme. Power Functions components integrate to activate several motorized actions, including the rotation of the superstructure, the movement of its tracks, and the operation of conveyor belts. A boom lowers the bucket wheel, which then conveys material into an included mine truck. Builders can also deconstruct this machine and reassemble it into a Mobile Aggregate Processing Plant, providing an engineering challenge.

## Set facts

- Set number: 42055-1
- Name: Bucket Wheel Excavator
- Theme: Technic
- Released: 2016
- Pieces: 3929
- Distinct part + colour lots: 168
- Build difficulty: advanced
- Repairability: 1.2% of this set's lots are hard to replace (2 of 168 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (168 lots, 3929 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 1 | Technic Pin Connector Hub with 2 Perpendicular Axles | Dark Bluish Gray | 10197 | 6005331 | €0,18 |
| 5 | Technic Gear 8 Tooth [Reinforced] | Dark Bluish Gray | 10928 | 6012451 | €0,15 |
| 60 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle | Dark Bluish Gray | 11214 | 6015356 | €0,29 |
| 6 | Technic Beam 1 x 5 Thin with Axle Holes on Ends | Light Bluish Gray | 11478 | 6328063 | €0,25 |
| 2 | Technic Panel Fairing #21 5L Small Smooth, Side B | White | 11946 | 6330084 | €0,38 |
| 2 | Technic Panel Fairing #22 5L Small Smooth, Side A | White | 11947 | 6343987 | €0,38 |
| 13 | Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring | Light Bluish Gray | 13971 | 6044729 | €0,21 |
| 5 | Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] | Light Bluish Gray | 14720 | 6055519 | €0,36 |
| 35 | Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise | Black | 15100 | 6073231 | — |
| 4 | Tyre 49.53 x 20 | Black | 15413 | 6055626 | €2,71 |
| 13 | Technic Panel 3 x 11 x 1 | Dark Blue | 15458 | 6531637 | €1,13 |
| 8 | Technic Panel 3 x 11 x 1 | Dark Bluish Gray | 15458 | 6127205 | €1,13 |
| 10 | Technic Axle 5 with Stop | Dark Tan | 15462 | 6055631 | — |
| 1 | Battery Box, Power Functions 4 x 11 x 7 with Orange Switch and Dark Bluish Gray Covers [Complete Assembly] [New Version] | Light Bluish Gray | 16511 | 6074147 | — |
| 9 | Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] | Tan | 18575 | 6346517 | €0,36 |
| 2 | Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] | Black | 18575 | 6346535 | €0,36 |
| 28 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle | Black | 18651 | 6089119 | €0,08 |
| 5 | Technic Pin Connector Round 1L [Beam] | Dark Bluish Gray | 18654 | 6100030 | €0,05 |
| 2 | Technic Turntable Large Type 3 Top, 60 Tooth | Black | 18938 | 6109283 | — |
| 2 | Technic Turntable Large Type 3 Base | Light Bluish Gray | 18939 | 6109285 | €1,04 |
| 2 | Technic Panel 5 x 11 x 1 Tapered | White | 18945 | 6097440 | — |
| 2 | Technic Panel 5 x 11 x 1 Tapered | Yellow | 18945 | 6310998 | €1,40 |
| 22 | Technic Gear 16 Tooth with Clutch on Both Sides | Red | 18946 | 6100930 | €0,42 |
| 4 | Technic Driving Ring 3L | Dark Bluish Gray | 18947 | 6100931 | €0,47 |
| 7 | Technic Driving Ring Connector | White | 18948 | 6276052 | €0,23 |
| 4 | Technic Pin Connector Hub with 1 Axle | Light Bluish Gray | 22961 | 6123815 | €0,13 |
| 3 | Technic Axle 11 | Yellow | 23948 | 6130012 | €0,29 |
| 4 | Technic Panel Curved and Bent 6 x 3 | Yellow | 24116 | 6133245 | — |
| 8 | Technic Digger Bucket 4 x 7 | Yellow | 24120 | 6145856 | — |
| 14 | Technic Gear Rack 1/4 Circle 11 x 11, 35 Teeth | Yellow | 24121 | 6151167 | — |
| 8 | Tile Special 1 x 2 Grille with Bottom Groove | Dark Blue | 2412b | 6022579 | €0,06 |
| 4 | Technic Axle 3 with Stop | Reddish Brown | 24316 | 6135494 | €0,07 |
| 1 | Sticker Sheet for Set 42055-1 | Unknown | 27091 | 6155286 | — |
| 724 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 2 | Technic Beam 1 x 4 Thin with Stud Connector | Red | 2825 | 6392956 | €0,21 |
| 11 | Plate 1 x 2 | Black | 3023 | 302326 | €0,08 |
| 1 | Plate 4 x 6 | White | 3032 | 303201 | €0,41 |
| 16 | Brick Round 2 x 2 Dome Top, Hollow Stud | Dark Bluish Gray | 30367c | 4161674 | — |
| 16 | Brick Round 2 x 2 Dome Top, Hollow Stud | Light Bluish Gray | 30367c | 4211637 | €0,13 |
| 1 | Bar 4L (Lightsaber Blade / Wand) | Yellow | 30374 | 6116606 | €0,05 |
| 40 | Brick Round 1 x 1 Open Stud | Light Bluish Gray | 3062b | 4211412 | €0,06 |
| 40 | Brick Round 1 x 1 Open Stud | Dark Bluish Gray | 3062b | 4211090 | €0,06 |
| 34 | Technic Pin 3/4 | Tan | 32002 | 6013938 | €0,08 |
| 12 | Technic Beam 1 x 11.5 Double Bent Thick | Dark Bluish Gray | 32009 | 6271155 | €0,39 |
| 35 | Technic Axle and Pin Connector Angled #1 | Yellow | 32013 | 6329889 | €0,08 |
| 17 | Technic Axle and Pin Connector Angled #6 - 90° | Yellow | 32014 | 6268925 | €0,22 |
| 2 | Technic Axle and Pin Connector Angled #3 - 157.5? | Light Bluish Gray | 32016 | 6261387 | €0,13 |
| 1 | Technic Beam 1 x 5 Thin | Yellow | 32017 | 4503425 | €0,15 |
| 12 | Technic Axle and Pin Connector Angled #2 - 180° | Black | 32034 | 6271869 | €0,11 |
| 3 | Technic Axle Connector with Axle Hole | Light Bluish Gray | 32039 | 4211553 | — |
| 15 | Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] | Red | 32054 | 4125198 | — |
| 64 | Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] | Light Bluish Gray | 32054 | 4211865 | — |
| 2 | Technic Beam 3 x 3 L-Shape Thin | Light Bluish Gray | 32056 | 6271815 | €0,31 |
| 42 | Technic Axle 2 Notched | Red | 32062 | 4142865 | €0,07 |
| 8 | Technic Beam 1 x 6 Thin | Black | 32063 | 6163980 | €0,13 |
| 3 | Technic Beam 1 x 7 Thin | Yellow | 32065 | 4114672 | — |
| 2 | Technic Knob Wheel | Yellow | 32072 | 6284189 | €0,27 |
| 67 | Technic Axle 5 | Yellow | 32073 | 6130008 | €0,11 |
| 39 | Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced | Yellow | 32123b | 6271167 | €0,04 |
| 38 | Technic Beam 2 x 4 L-Shape Thick | Light Bluish Gray | 32140 | 6271831 | €0,15 |
| 31 | Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole | Black | 32184 | 6276951 | €0,12 |
| 2 | Technic Gear 20 Tooth Bevel | Tan | 32198 | 6031962 | €0,56 |
| 2 | Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin | Dark Bluish Gray | 32249 | 4234386 | — |
| 25 | Technic Gear 12 Tooth Double Bevel | Black | 32270 | 4177431 | €0,18 |
| 9 | Technic Beam 1 x 9 Bent (7 - 3) Thick | Light Bluish Gray | 32271 | 6276836 | €0,33 |
| 6 | Technic Beam 1 x 15 Thick | Yellow | 32278 | 4542579 | €0,42 |
| 75 | Technic Beam 1 x 15 Thick | Dark Bluish Gray | 32278 | 4542576 | €0,42 |
| 4 | Technic Beam 1 x 15 Thick | Light Bluish Gray | 32278 | 4542577 | €0,42 |
| 13 | Technic Axle and Pin Connector Perpendicular Double | Black | 32291 | 6280394 | €0,15 |
| 14 | Technic Beam 1 x 5 Thick | White | 32316 | 4249021 | €0,19 |
| 10 | Technic Beam 1 x 5 Thick | Yellow | 32316 | 4142133 | €0,19 |
| 101 | Technic Beam 1 x 5 Thick | Light Bluish Gray | 32316 | 4211651 | €0,19 |
| 9 | Technic Beam 1 x 7 Bent (4 - 4) Thick | Light Bluish Gray | 32348 | 6278129 | €0,27 |
| 8 | Technic Beam 1 x 4 Thin | Yellow | 32449 | 6327559 | €0,19 |
| 5 | Technic Steering / CV Joint | Light Bluish Gray | 32494 | 6265690 | €0,23 |
| 2 | Technic Beam 1 x 3 Thick | Yellow | 32523 | 4153707 | €0,10 |
| 93 | Technic Beam 1 x 3 Thick | Dark Bluish Gray | 32523 | 4210751 | €0,10 |
| 2 | Technic Beam 1 x 3 Thick | White | 32523 | 4208160 | €0,10 |
| 11 | Technic Beam 1 x 7 Thick | White | 32524 | 4495927 | €0,25 |
| 50 | Technic Beam 1 x 7 Thick | Dark Bluish Gray | 32524 | 4495931 | €0,25 |
| 7 | Technic Beam 1 x 7 Thick | Yellow | 32524 | 4495934 | €0,25 |
| 59 | Technic Beam 1 x 11 Thick | Dark Bluish Gray | 32525 | 4603472 | €0,33 |
| 7 | Technic Beam 1 x 11 Thick | White | 32525 | 6028103 | €0,33 |
| 53 | Technic Beam 3 x 5 L-Shape Thick | Dark Bluish Gray | 32526 | 4210753 | €0,24 |
| 4 | Technic Beam 3 x 5 L-Shape Thick | White | 32526 | 4585040 | €0,24 |
| 17 | Technic Pin Long without Friction Ridges | Tan | 32556 | — | — |
| 2 | Technic Pin Connector Perpendicular Long | Light Bluish Gray | 32557 | 4211714 | €0,22 |
| 2 | Technic Gear 24 Tooth [New Style with Single Axle Hole] | Dark Bluish Gray | 3648b | 6133119 | €0,33 |
| 19 | Technic Pin without Friction Ridges Lengthwise | Light Bluish Gray | 3673 | 4211807 | €0,05 |
| 1 | Technic Brick 1 x 4 [3 Pin Holes] | Light Bluish Gray | 3701 | 4211441 | €0,17 |
| 12 | Technic Axle 4 | Black | 3705 | 370526 | €0,08 |
| 5 | Technic Axle 6 | Red | 3706 | 6130002 | €0,12 |
| 7 | Technic Axle 8 | Black | 3707 | 370726 | €0,22 |
| 1 | Technic Axle 12 | Black | 3708 | 370826 | €0,27 |
| 53 | Technic Bush | Red | 3713 | 6271820 | €0,05 |
| 3 | Technic Axle 10 | Red | 3737 | 6130005 | €0,25 |
| 3 | Technic Axle Pin without Friction Ridges Lengthwise | Tan | 3749 | 4666579 | €0,06 |
| 27 | Technic Beam 1 x 9 Thick | Light Bluish Gray | 40490 | 6102449 | €0,29 |
| 18 | Technic Beam 1 x 13 Thick | Light Bluish Gray | 41239 | 4522934 | €0,39 |
| 18 | Technic Beam 1 x 2 Thin | White | 41677 | 6371416 | €0,13 |
| 32 | Technic Wedge Belt Wheel [aka Pulley] | Dark Bluish Gray | 4185 | 6321744 | €0,30 |
| 51 | Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes | Light Bluish Gray | 42003 | 6273724 | €0,12 |
| 5 | Wheel 11 x 8 with Center Groove | Light Bluish Gray | 42610 | 4211758 | €0,11 |
| 39 | Technic Pin 1/2 | Light Bluish Gray | 4274 | 4211483 | €0,05 |
| 162 | Technic Axle Pin with Friction Ridges Lengthwise | Black | 43093 | 4206482 | €0,06 |
| 30 | Technic Beam 1 x 2 Thick | Yellow | 43857 | 4187122 | €0,12 |
| 4 | Technic Beam 1 x 2 Thick | Black | 43857 | 6057802 | €0,12 |
| 11 | Technic Axle 7 | Light Bluish Gray | 44294 | 4211805 | €0,16 |
| 2 | Technic Pin Connector Perpendicular 2 x 2 Bent | Light Bluish Gray | 44809 | 4211880 | €0,36 |
| 39 | Technic Axle 3 | Light Bluish Gray | 4519 | 4211815 | €0,05 |
| 1 | Technic Worm Gear | Light Bluish Gray | 4716 | 4211510 | — |
| 12 | Technic Pin Connector Hub Perpendicular 3L with 4 Pins | Light Bluish Gray | 48989 | 4225033 | — |
| 1 | Wedge Plate 2 x 4 | Light Bluish Gray | 51739 | 4507056 | €0,10 |
| 22 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Trans-Clear | 54200 | 6245250 | €0,08 |
| 2 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Light Bluish Gray | 54200 | 4521921 | €0,06 |
| 9 | Technic Axle 8 with Stop | Dark Bluish Gray | 55013 | 4499858 | €0,21 |
| 24 | Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part) | Light Bluish Gray | 55615 | 4296059 | — |
| 4 | Wheel 30.4 x 20 without Pinholes, with Reinforced Rim | Light Bluish Gray | 56145 | 4297210 | €0,50 |
| 8 | Technic Tread Sprocket Wheel Small 6 Tooth | Black | 57520 | 4662228 | €0,31 |
| 1 | Motor, XL, Power Functions, 6 x 5 x 6, 20cm with Dark Bluish Gray Bottom | Light Bluish Gray | 58121 | 4506081 | — |
| 9 | Technic Axle 5.5 with Stop [Rounded Short End] | Dark Bluish Gray | 59426 | 4508553 | €0,11 |
| 51 | Technic Axle Connector Smooth [with x Hole + Orientation] | Yellow | 59443 | 4519010 | €0,06 |
| 4 | Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] | Black | 6020 | 602026 | — |
| 26 | Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole | Light Bluish Gray | 60483 | 6265089 | €0,07 |
| 3 | Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole | Orange | 60483 | 6265128 | €0,07 |
| 15 | Technic Beam 3 x 3 T-Shape Thick | Light Bluish Gray | 60484 | 4552348 | €0,18 |
| 14 | Technic Axle 9 | Yellow | 60485 | 6130010 | €0,21 |
| 1 | Tyre Offset Tread with Center Band 23 x 7 | Black | 61254 | 4541455 | €0,24 |
| 2 | Plate Round 1 x 1 with Solid Stud | Trans-Clear | 6141 | 6514052 | €0,04 |
| 2 | Technic Universal Joint 3L [Complete Assembly] | Light Bluish Gray | 61903 | 6335279 | €0,74 |
| 2 | Technic Axle and Pin Connector Block 4 x 3 x 2 1/2 [Linear Actuator Holder] | Dark Bluish Gray | 61904 | 6356106 | €0,77 |
| 2 | Technic Linear Actuator with Dark Bluish Gray Ends [Improved Version] | Light Bluish Gray | 61927b | 4638507 | — |
| 8 | Panel 1 x 1 x 1 Corner | White | 6231 | 623101 | €0,07 |
| 8 | Technic Pin Connector Round [Slotted] | Red | 62462 | 6173126 | €0,06 |
| 4 | Technic Pin Connector Round [Slotted] | White | 62462 | 6173116 | €0,06 |
| 15 | Technic Axle and Pin Connector Perpendicular Triple | Light Bluish Gray | 63869 | 6331441 | €0,17 |
| 3 | Technic Beam 5 x 11 with 3 x 5 Opening Frame Thick | Light Bluish Gray | 64178 | 4540797 | €1,26 |
| 53 | Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick | Light Bluish Gray | 64179 | 4539880 | €0,91 |
| 4 | Technic Panel 5 x 11 x 1 | Light Bluish Gray | 64782 | 6474925 | €1,19 |
| 1 | Technic Panel 5 x 11 x 1 | White | 64782 | 4580019 | — |
| 4 | Technic Axle and Pin Connector Perpendicular | Yellow | 6536 | 6261367 | €0,10 |
| 33 | Technic Axle and Pin Connector Perpendicular | Dark Bluish Gray | 6536 | 6261374 | €0,10 |
| 457 | Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots | Black | 6558 | 4514553 | — |
| 9 | Technic Axle 3 with Stud | Dark Tan | 6587 | 6031821 | €0,10 |
| 12 | Technic Gear 12 Tooth Bevel | Tan | 6589 | 4565452 | €0,10 |
| 13 | Technic Beam 1 x 9 Bent (6 - 4) Thick | Dark Bluish Gray | 6629 | 6279883 | €0,34 |
| 35 | Technic Beam 1 x 3 Thin | Dark Bluish Gray | 6632 | 6364452 | €0,25 |
| 2 | Tile 1 x 6 with Groove | White | 6636 | 663601 | €0,13 |
| 4 | Technic Changeover Catch - + opening | Red | 6641 | 4160522 | — |
| 3 | Technic Gear 24 Tooth Clutch with Dark Bluish Gray Center | White | 76244 | 4107539 | — |
| 1 | Windscreen 3 x 4 x 3 | Trans-Brown | 84954 | 4543458 | — |
| 20 | Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] | Light Bluish Gray | 87082 | 4560175 | — |
| 20 | Technic Axle 4 with Stop | Dark Bluish Gray | 87083 | 6083620 | €0,07 |
| 2 | Brick Special 1 x 1 with Stud on 1 Side | Light Bluish Gray | 87087 | 4558953 | €0,11 |
| 19 | Technic Gear 20 Tooth Bevel with Pin Hole | Light Bluish Gray | 87407 | 4558690 | €0,27 |
| 6 | Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes | Black | 87408 | 6278412 | €0,47 |
| 1 | Technic Gear Rack 1 x 7 with Axle and Pin Holes | Black | 87761 | 6327430 | €0,82 |
| 1 | Bar 3L | Light Bluish Gray | 87994 | 6093527 | €0,06 |
| 88 | Technic Link Tread Wide with Two Pin Holes, Reinforced | Black | 88323 | 6325504 | €0,34 |
| 116 | Technic Link Tread Wide with Two Pin Holes, Reinforced | Dark Bluish Gray | 88323 | 4566742 | — |
| 5 | Technic Steering / CV Joint Axle | Dark Bluish Gray | 92906 | 4610374 | €0,31 |
| 4 | Technic Axle and Pin Connector Perpendicular Split | Black | 92907 | 6279021 | €0,29 |
| 22 | Technic Gear 16 Tooth Reinforced [New Style] | Light Bluish Gray | 94925 | 4640536 | €0,21 |
| 4 | Tile Round 1 x 1 | White | 98138 | 6284572 | €0,04 |
| 17 | Technic Axle 4 with Centre Stop | Tan | 99008 | 4666999 | €0,10 |
| 2 | Technic Turntable Small Top | Light Bluish Gray | 99009 | 4652235 | €0,44 |
| 2 | Technic Turntable Small Base, 28 Tooth | Black | 99010 | 6326620 | €0,65 |
| 8 | Technic Beam Triangle Thin [Type II] | Light Bluish Gray | 99773 | 6331428 | €0,31 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/42055-1-bucket-wheel-excavator
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/42055-1-bucket-wheel-excavator