Attachments for the Kubota U55-4 weight range
- Bucket line
- GP - general purpose digging bucket300–600 mm wide
- We usually reply within 1 working day
- We check the fit before we send the quote
- Every offer names the dispatch week
- If a bracket we made is wrong and does not fit your machine, we replace it.
How is the attachment mounted on this machine?
Tell us what is on the machine now. It narrows the sizes we show and goes with your enquiry. It does not confirm fit: we check the bracket before we send the quote.
Catalogue sizes for the U55-4
Each size below has a catalogue row rated for a carrier of 5,400 kg operating weight. Tell us which sizes you want and we reply with an offer.
Each family shows its candidate models by operating-weight range.
The attachments buyers in your market ask for first, sized for the U55-4.
On a narrow screen the table scrolls sideways.
Buckets
Tools
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
Other mini-ex attachments | ||||
| LR mini - straight land rakes for mini-excavator | LR-6 · 2 width variants | 1,000–1,200 | 158–187 | |
| LRS - short land rakes for mini-excavators | LRS-7 | 1,980 | 155 | |
| RIP mini - ripper shank for mini-excavator | Ripper-5.5 | 51 | ||
| MR mini - multi-ripper for mini-excavator | MRF 75 · 2 width variants | 800–1,000 | 117–121 | |
| AC mini - asphalt cutter for mini-excavator | AC-6 | 43 | ||
| GRB light - mini-excavator grading beam with lowered mass | GRB-MIKRO · 3 width variants, GRBH-MIKRO · 3 width variants | 1,500–2,000 | 86–141 | |
Non-bucket attachments | ||||
| DuoRIP - double ripper for root extraction | Duo-Ripper-6 | 365 | 102 | |
| GRB - excavator grading beam | GRB-MINI · 4 variants, GRBH-MINI · 2 width variants | 1,000–1,500 | 91–261 | |
Also available | ||||
| RC - root cutter | Root cutter-6 | 200 | 20 | |
| RRB - root rake bucket profile | RRB-60 | 1,500 | 222 | |
Quick couplers
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
| QC-S - S-System Scandinavian quick-couplerStart herePrice & lead timeGet price & lead timeS-System (Scandinavian) | QC-S40-H, QC-S40-H/240, QC-S45-H, QC-S50, QC-S40-SA, QC-S40-SA/240, QC-S45-SA, QC-U-S40-H, QC-U-S40-H/240, QC-U-S45-H, QC-U-S50 | 30–232 | ||
| CW - CW-System compatible quick-couplerCW-System | CW-10, CW-U-10 | 65–179 | ||
| QC-HS / QC-MS - MS-System compatible quick-couplerMS system | QC-HS-03, QC-MS-03, QC-U-HS-03 | 30–90 | ||
| QC-PG - pin-grabber quick-coupler for factory bracketsPin-grabber | QC-PG-50, QC-ML-M-45, QC-U-PG-50 | 45–204 |
Welded to EN ISO 3834-2. Agree it as a standing term of supply and the EN 10204 3.1 certificate ships with every attachment. You also get the CE declaration of conformity for every attachment. See the certificates.
Message us on WhatsAppPhotos and voice notes are welcome.Which coupler is on your machine?
Pick the system on your machine and we put it in your enquiry. We check the bracket before we send the quote.
How to measure your coupler
Not sure which system it is? Three measurements tell us which bracket you need.
- Measure the diameter of both pins.
- Measure the distance between the pin centres.
- Measure the width between the inside faces of the ears.
If the coupler has a make or type printed on it, send that too.
Before you order: check the interface
The weight class of the Kubota U55-4 sizes the attachment. It does not tell you the pin diameter, the pin spacing or the stick width, and those decide whether an attachment fits. Measure them on the machine, or send us the measurements of the bucket it runs today.
On a mini excavator the weight of the attachment counts for more than on a larger machine, because every kilogram of bucket is taken from lift capacity and stability. A narrow trenching bucket and a wide grading bucket are the usual pair, and many machines run a small quick coupler to change between them.
Quick coupler brackets at this weight
In our model tables, the attachments listed for the Kubota U55-4 at its weight are built with these brackets. Each code opens the models that list it.
- Measure the diameter of both bucket pins.
- Measure the distance between the pin centres.
- Measure the inside width between the stick ears.
- If the machine runs a quick coupler, note its make and type.
What these terms mean:
How to choose an attachment for the job:
Send me the spec sheet for my machine
Pick a bucket line and we email you its spec sheet, with the sizes we build for the U55-4.
Send this answer to a colleague or dealer
Kubota U55-4: GP - general purpose digging bucket (GP-60)
Sizes are matched to the published operating weight of the U55-4.
- Weight Class
- Mini Excavator (1–6 t)
- Operating Weight
- 5,400 kg
- Family-owned group, founded in 1996
- More than 50,000 attachments delivered
- Built in our own factory in Poland
Operating weight as published by Kubota, retrieved 2026-09-10. Source
Kubota U55-4: machine data
- Operating weight
- 5,400 kg
- Maximum digging depth
- 3,630 mm
- Bucket breakout force
- 42.3 kN
- Auxiliary circuit flow
- 75 l/min
- Auxiliary circuit pressure
- 206 bar
- Main pump flow
- 112.2 l/minmaker's document (ke.kubota-eu.com)
- Bucket capacity
- 0.16 m³maker's document (ke.kubota-eu.com)
- Bucket width
- 600–650 mmmaker's document (ke.kubota-eu.com)
As published by Kubota, retrieved 2026-09-19. Source
- Pin diameter
- 45 mmSource: Tuff Buckets.
A guide only. Measure the pins before you order.
What the U55-4 figures mean for its attachments
- Its auxiliary circuit is rated at 75 l/min and 206 bar. A breaker, auger, tilt rotator or other hydraulic tool states the oil flow it needs, so choose one whose range includes this figure.
- The main pump delivers up to 112.2 l/min at 274 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- It digs down to 3,630 mm. That is the deepest trench it can open.
- Kubota lists buckets from 600 to 650 mm wide for this machine.Our sizes in that range: GP - general purpose digging bucket (GP-60); GPO - GP bucket with perforated bottom (GPO-60); GPL - general purpose digging bucket (GPL-60); GPLO - GPL bucket with perforated bottom (GPLO-60); DS mini - Scandinavian deep digging bucket for mini-excavator (DS-60); CB mini - hydraulic clamp bucket for mini-excavator (CBR-60)
- Kubota lists a bucket capacity of 0.16 m³.
- Bucket breakout force is 42.3 kN. That is the force a bucket or ripper works with at the tooth.
Figures as published by Kubota in its own documents.
How the U55-4 compares with its neighbours
The nearest models by weight, with the difference to the U55-4 in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow | Auxiliary flow |
|---|---|---|---|---|
| U55-4 | 5.4 t | 3,630 mm | 112.2 l/min | 75 l/min |
| Kubota U56-5 | 5.52 t (+0.12 t) | 3,630 mm | 112.2 l/min | 75 l/min |
| Kubota KX057-4 | 5.545 t (+0.145 t) | 3,890 mm (+260) | 112.2 l/min | 75 l/min |
| CASE CX55D | 5.4 t | 3,490 mm (-140) | 129 l/min (+16.8) | 53 l/min (-22) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
U55-4: build years and variants
Build years: 2010–2026
Variants
- U55-4 (2010–2026)
Years and variants as listed in the LECTURA Specs database.
U55-4: what the brochure names
Features Kubota names in its own brochure for the U55-4. Some of them may be optional, so check the machine's spec before you order.
- A load-sensing hydraulic system.
- Two-speed travel.
- A dozer blade.
- Operator protection certified to ROPS and FOPS.
From Kubota's published brochure. We keep the source document on file.
Other Kubota models of a similar weight
Other makes of a similar weight
Operating weight within 2 t of the Kubota U55-4.
Why buy from the factory
- Cutting, machining, welding and painting on one site, our own factory in Poland, EU
- More than 50,000 attachments delivered since 2008
- A record for every serial number, so the spare parts match your attachment
Need Custom Specifications?
We can manufacture attachments to your exact pin spacing and requirements for Kubota U55-4.
Questions about the U55-4
- What bucket width fits the U55-4?
- Kubota lists buckets from 600 to 650 mm wide for it. Pick a width in that range.
- Can the U55-4 run a hydraulic attachment?
- Yes, if the tool's rated range covers the auxiliary circuit: 75 l/min at 206 bar.
For publishers: cite or embed this table
Cite this table as https://sieruta.com/en/fit/kubota/kubota-u55-4, figures as of 2026-09-10.
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Machine makes and model names belong to their owners. Sieruta is not affiliated with them. We use the names only to show which machines we offer attachments for, by operating weight.