Attachments for the Kubota U20-3α weight range
Weight Class: Mini Excavator (1–6 t) Operating Weight: 2,180 – 2,380 kg
- Bucket line
- GP - general purpose digging bucket 300–400 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.
Ask for a price with this answer
The short version for the U20-3α
Families to look at first
- GP - general purpose digging bucket 300–400 mm
- GB - rigid grading & ditching bucket, German profile 1,000–1,200 mm
- GBH - hydraulic tilt ditching bucket for mini-excavator 1,000–1,200 mm
Quick coupler brackets at this weight
- S30
- S40
- MS01
- MS03
- CW00
- CW05
- CW10
- OQ40
- HS02
- HS03
- HS06
- Klac C
- Klac D
- Klac E
- M02
- M03
- M10
Brackets we build attachments with in this weight range. Not a confirmed fit.
Still to check
Pin diameter, pin spacing, inside width between the stick ears, and any quick coupler on the machine.
Catalogue sizes for the U20-3α
Each size below has a catalogue row rated for a carrier of 2,180 – 2,380 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 U20-3α.
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-3 · 2 width variants | 1,000–1,200 | 85–100 | |
| LRS - short land rakes for mini-excavators | LRS-3 | 925 | 70 | |
| RIP mini - ripper shank for mini-excavator | Ripper-2.5 | 21 | ||
| MR mini - multi-ripper for mini-excavator | MRF 25 | 400 | 36 | |
| 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 | |
Also available | ||||
| RC - root cutter | Root cutter-2 | 170 | 13 | |
| RRB - root rake bucket profile | RRB-40 | 1,200 | 148 | |
Quick couplers
Coupler sizes within this machine's published weight range. Not a confirmed fit.
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
| QC-S - S-System Scandinavian quick-coupler Start here Price & lead time Get price & lead time S-System (Scandinavian) | QC-S40-H, QC-S40-H/240, QC-S40-SA, QC-S40-SA/240, QC-U-S40-H, QC-U-S40-H/240 | 30–92 | ||
| CW - CW-System compatible quick-coupler CW-System | CW-05, CW-U-05 | 25–67 | ||
| QC-HS / QC-MS - MS-System compatible quick-coupler MS system | QC-HS-03, QC-MS-03, QC-U-HS-03 | 30–90 | ||
| QC-PG - pin-grabber quick-coupler for factory brackets Pin-grabber | QC-ML-M-35 | 22 |
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 quick coupler and hydraulic attachment. See the certificates.
Message us on WhatsApp Photos and voice notes are welcome.Before you order: check the interface
The weight class of the Kubota U20-3α 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 U20-3α at its weight are built with these brackets. Each code opens the models that list it.
Brackets we build attachments with in this weight range. Not a confirmed fit.
- 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 U20-3α.
Send this answer to a colleague or dealer
Kubota U20-3α: GP - general purpose digging bucket (GP-30). Shortlisted by operating weight
Sizes are matched to the published operating weight of the U20-3α.
- Weight Class
- Mini Excavator (1–6 t)
- Operating Weight
- 2,180 – 2,380 kg
- Family-owned group, founded in 1996
- More than 50,000 attachments delivered
- Built in our own factory in Poland
Hydraulics for tilt / grab / rotator
- Auxiliary flow
- 35.8 l/min
Source Kubota specification, accessed 2026-09-27
Operating weight as published by Kubota, retrieved 2026-09-10. Source
Kubota U20-3α: machine data
- Operating weight
- 2,180 – 2,380 kg
- Engine power
- 13.5 kW
- Maximum digging depth
- 2,540 mm
- Bucket breakout force
- 18.4 kN
- Arm crowd force
- 13.2 kN
- Auxiliary circuit flow
- 35.8 l/min
- Auxiliary circuit pressure
- 216 bar
- Main pump flow
- 46 l/min maker's document (ke.kubota-eu.com)
- Bucket capacity
- 0.066 m³ maker's document (ke.kubota-eu.com)
- Bucket width
- 400–450 mm maker's document (ke.kubota-eu.com)
- Lift capacity
- 590 kg maker's document (ke.kubota-eu.com)
As published by Kubota, retrieved 2026-09-27. Source
What the U20-3α figures mean for its attachments
- Its auxiliary circuit is rated at 35.8 l/min and 216 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 46 l/min at 216 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- It digs down to 2,540 mm. That is the deepest trench it can open.
- Kubota lists buckets from 400 to 450 mm wide for this machine.Our sizes in that range: GP - general purpose digging bucket (GP-30); GPL - general purpose digging bucket (GPL-30); DS mini - Scandinavian deep digging bucket for mini-excavator (DS-30); KS mini - cable bucket for mini-excavator (KS-20)
- Kubota lists a bucket capacity of 0.066 m³.
- Bucket breakout force is 18.4 kN and arm crowd force 13.2 kN. That is the force a bucket or ripper works with at the tooth.
- Kubota gives a lifting capacity of 590 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- Its transport length is 3,850 mm.
- Its transport height is 2,380 mm.
- Engine power is 13.5 kW.
Figures as published by Kubota in its own documents.
How the U20-3α compares with its neighbours
The nearest models by weight, with the difference to the U20-3α in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow | Auxiliary flow |
|---|---|---|---|---|
| U20-3α | 2.18 t | 2,540 mm | 46 l/min | 35.8 l/min |
| Kubota U27-4 | 2.49 t (+0.31 t) | 2,820 mm (+280) | 57.6 l/min (+11.6) | 48 l/min (+12.2) |
| Kubota KX027-4 | 2.52 t (+0.34 t) | 2,740 mm (+200) | 58.6 l/min (+12.6) | 47.3 l/min (+11.5) |
| Komatsu PC20E-6 | 2.19 t (+0.01 t) | 2,370 mm (-170) | 36 l/min (-10) | not published |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
U20-3α: build years and variants
Build years: 2005–2026
Variants
- U20-3α GL (2005–2026)
Years and variants as listed in the LECTURA Specs database.
U20-3α: what the brochure names
Features Kubota names in its own brochure for the U20-3α. Some of them may be optional, so check the machine's spec before you order.
- A zero tail swing: the rear stays inside the tracks when the upper slews.
- Operator protection certified to ROPS and FOPS.
- Two-speed travel.
- Boom swing, for digging along walls and around obstacles.
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 U20-3α.
Other Kubota models with the same coupler brackets
Our model tables give these machines the same quick coupler brackets.
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 U20-3α.
Questions about the U20-3α
- What bucket width fits the U20-3α?
- Kubota lists buckets from 400 to 450 mm wide for it. Pick a width in that range.
- Can the U20-3α run a hydraulic attachment?
- Yes, if the tool's rated range covers the auxiliary circuit: 35.8 l/min at 216 bar.
For publishers: cite or embed this table
Cite this table as https://sieruta.com/en/fit/kubota/kubota-u20-3a, 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.