Attachments for the Komatsu PC128US-2 weight range
- Bucket line
- DB - heavy duty digging bucket500–1200 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.
Catalogue sizes for the PC128US-2
Each size below has a catalogue row rated for a carrier of 13,000 – 13,400 kg operating weight. Tell us which sizes you want and we reply with an offer.
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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 product that carries the CE mark.
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Sizes are matched to the published operating weight of the PC128US-2.
- Weight Class
- Large Excavator (12–30 t)
- Operating Weight
- 13,000 – 13,400 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 Komatsu, retrieved 2026-09-10. Source
Start here
The attachments buyers in your market ask for first, sized for the PC128US-2.
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.
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 PC128US-2.
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Komatsu PC128US-2: DBF - flat-top digging bucket for quick coupler (DBF-160)
PC128US-2 at a glance
| Figure | Value | Source |
|---|---|---|
| Max dig depth | 5,450 mm | maker's website (komatsu.eu) |
| Max reach | 8,600 mm | maker's document (komatsu.eu) |
| Max dump height | 7,345 mm | maker's document (komatsu.eu) |
| Arm length | 2,100–3,000 mm | maker's document (komatsu.eu) |
| Main pump flow | 226 l/min | maker's document (komatsu.eu) |
| Bucket capacity | 0.18–0.55 m³ | maker's document (komatsu.eu) |
| Bucket width | 450–1,000 mm | maker's document (komatsu.eu) |
| Lift capacity | 6,800 kg | maker's document (komatsu.eu) |
| Quick coupler | Quick coupler (hydraulic) | maker's document (komatsu.eu) |
| Transport width | 2,490 mm | maker's document (komatsu.eu) |
Only figures the maker publishes for this model. Where a figure is missing, no value is shown.
What the PC128US-2 figures mean for its attachments
- The main pump delivers up to 226 l/min at 319 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- Komatsu lists this quick coupler for it: Quick coupler (hydraulic). The bracket on every attachment has to match the coupler.
- It digs down to 5,450 mm. That is the deepest trench it can open.
- Its maximum reach is 8,600 mm.
- It dumps at up to 7,345 mm, so a truck or skip side has to sit below that height.
- Komatsu offers arms from 2,100 to 3,000 mm. A longer arm reaches further, a shorter one handles a heavier bucket.
- Komatsu lists buckets from 450 to 1,000 mm wide for this machine. Compare that with the bucket widths in the table above.Our sizes in that range: DB - heavy duty digging bucket (DB-160); SDB - heavy duty skeleton DB bucket (SDB-160); DBF - flat-top digging bucket for quick coupler (DBF-160); RDBF - flat-top skeleton DBF bucket on rods (RDBF-160)
- Komatsu lists bucket capacities from 0.18 to 0.55 m³.
- Komatsu gives a lifting capacity of 6,800 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- For transport it measures 7,220 x 2,490 x 2,850 mm (length, width, height).
- Engine power is 64 kW.
Figures as published by Komatsu in its own documents.
How the PC128US-2 compares with its neighbours
The nearest models by weight, with the difference to the PC128US-2 in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow |
|---|---|---|---|
| PC128US-2 | 13 t | 5,450 mm | 226 l/min |
| Komatsu PW138MR-11 | 13 t | 4,300 mm (-1,150) | 222 l/min (-4) |
| Komatsu PW130ES-6 | 13.1 t (+0.1 t) | 5,410 mm (-40) | 236 l/min (+10) |
| Volvo EWR130E | 12.9 t (-0.1 t) | 5,100 mm (-350) | 275 l/min (+49) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
PC128US-2: what the brochure names
Features Komatsu names in its own brochure for the PC128US-2. Some of them may be optional, so check the machine's spec before you order.
- A short tail swing, for work next to walls and traffic.
- Proportional control of the auxiliary hydraulics, for tilt buckets, augers and breakers.
- A load-sensing hydraulic system.
From Komatsu's published brochure. We keep the source document on file.
Questions about the PC128US-2
- What bucket width fits the PC128US-2?
- Komatsu lists buckets from 450 to 1,000 mm wide for it. Pick a width in that range from the sizes above.
- Which quick coupler is installed on your PC128US-2?
- Komatsu lists this coupler for it: Quick coupler (hydraulic). Order attachments with the matching bracket.
Each family shows its candidate models by operating-weight range.
Digging & sorting buckets
- DB - heavy duty digging bucket
DB-160 · 5 width variants
- SDB - heavy duty skeleton DB bucket
SDB-160 · 2 width variants
- DBF - flat-top digging bucket for quick coupler
DBF-160 · 5 width variants
- RDBF - flat-top skeleton DBF bucket on rods
RDBF-160 · 2 width variants
Ditching, grading, sloping buckets
- GD - rigid grading & ditching bucket, 12–40 t
GD-160 · 3 width variants
- GDH - heavy duty hydraulic grading & ditching bucket
GDH-160 · 3 width variants
- SB - Dutch profile grading & ditching bucket
SB-160 · 4 width variants
- DCB - grading & ditching bucket with round profile
DCB-160 · 3 width variants
- PS - Scandinavian universal / grading bucket
PS-160 · 5 width variants
- PSH - hydraulic swivelling grading bucket
PS-160 · 5 width variants
Non-bucket attachments
- TH - hydraulic thumb for excavator
TH-16
- AC - excavator asphalt cutters
AC-18
- MR - heavy duty excavator multi-ripper
MR-17
- DuoRIP - double ripper for root extraction
Duo-Ripper-18
- GRB - excavator grading beam
GRB midi · 6 variants, GRB maxi · 6 variants
Other mini-ex attachments
- LRS - short land rakes for mini-excavators
LRS-15
- RIP mini - ripper shank for mini-excavator
Ripper-14
- MR mini - multi-ripper for mini-excavator
MRF 140 · 2 width variants
- QC-S - S-System Scandinavian quick-coupler
QC-S60, QC-U-S60
- CW - CW-System compatible quick-coupler
CW-20, CW-20 S, CW-U-20, CW-U-20 S
- QC-HS / QC-MS - MS-System compatible quick-coupler
QC-HS-10, QC-MS-10, QC-U-HS-10
- QC-PG - pin-grabber quick-coupler for factory brackets
QC-PG-60, QC-PG-65, QC-ML-M-55, QC-ML-M-60, QC-U-PG-60, QC-U-PG-65
Komatsu PC128US-2: machine data
- Operating weight
- 13,000 – 13,400 kg
- Engine power
- 64 kW
- Maximum digging depth
- 5,450 mm
- Maximum dump height
- 7,345 mm
- Quick coupler
- Quick coupler (hydraulic)
As published by Komatsu, retrieved 2026-09-17. Source
Before you order: check the interface
The weight class of the Komatsu PC128US-2 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.
At this weight the choice is mostly about the material. A general purpose bucket suits soil and gravel, a reinforced bucket with thicker wear parts suits mixed ground and broken rock, and the quick coupler on the machine sets the bracket every attachment needs.
Quick coupler brackets at this weight
In our model tables, the attachments listed for the Komatsu PC128US-2 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:
Other Komatsu models of a similar weight
Other makes of a similar weight
Operating weight within 2 t of the Komatsu PC128US-2.
Other Komatsu 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 Komatsu PC128US-2.
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 product that carries the CE mark.
Do you sell Komatsu machines? Machine dealer supply
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.