Attachments for the Hitachi ZX390TC-7 weight range
- Bucket line
- DB - heavy duty digging bucket1000–1800 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 ZX390TC-7
Each size below has a catalogue row rated for a carrier of 38,500 – 39,200 kg operating weight. Tell us which sizes you want and we reply with an offer.
On a narrow screen the table scrolls sideways.
| Attachment | Sizes | Capacity [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
| DB - heavy duty digging bucket | DB-400 · 6 width variants | 1,082–2,288 SAE | 1,000–1,800 | 957–1,480 |
| SDB - heavy duty skeleton DB bucket | SDB-400 · 2 width variants | 1,917–2,224 SAE | 1,600–1,800 | 1,411–1,550 |
| DBF - flat-top digging bucket for quick coupler | DBF-400 · 6 width variants | 1,024–2,179 SAE | 1,000–1,800 | 854–1,312 |
| RDBF - flat-top skeleton DBF bucket on rods | RDBF-400 · 3 width variants | 1,727–2,179 SAE | 1,500–1,800 | 1,067–1,213 |
| DSX - Nordic heavy duty digging bucket | DS-HD-400 · 3 width variants | 921–1,462 SAE | 1,000–1,400 | 952–1,214 |
| GD - rigid grading & ditching bucket, 12–40 t | GD-400 · 3 width variants | 1,395–1,851 SAE | 2,000–2,600 | 856–1,055 |
| GDH - heavy duty hydraulic grading & ditching bucket | GDH-400 · 3 width variants | 1,336–1,780 SAE | 2,000–2,600 | 1,218–1,415 |
| SB - Dutch profile grading & ditching bucket | SB-400 · 4 width variants | 1,739–2,242 SAE | 2,000–2,500 | 889–1,065 |
| DCB - grading & ditching bucket with round profile | DCB-400 · 3 width variants | 1,307–1,735 SAE | 2,000–2,600 | 721–893 |
| RIP - heavy duty ripper | Ripper-E | 490 | ||
| CW - CW-System compatible quick-coupler | CW-45, CW-45 S, CW-55, CW-U-45, CW-U-45 S | 435–1,146 | ||
| QC-HS / QC-MS - MS-System compatible quick-coupler | QC-HS-25 | 310 | ||
| QC-PG - pin-grabber quick-coupler for factory brackets | QC-PG-100, QC-U-PG-100 | 740–1,435 |
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 ZX390TC-7.
- Weight Class
- Heavy Excavator (30–65 t)
- Operating Weight
- 38,500 – 39,200 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 Hitachi, retrieved 2026-09-10. Source
Start here
The attachments buyers in your market ask for first, sized for the ZX390TC-7.
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 ZX390TC-7.
Send this answer to a colleague or dealer
Hitachi ZX390TC-7: DBF - flat-top digging bucket for quick coupler (DBF-400)
ZX390TC-7 at a glance
| Figure | Value | Source |
|---|---|---|
| Max dig depth | 7,380 mm | maker's website (hitachicm.com) |
| Arm length | 3,200 mm | maker's document (hitachicm.com) |
| Main pump flow | 576 l/min | maker's document (hitachicm.com) |
| Bucket capacity | 2.5 m³ | maker's document (hitachicm.com) |
| Lift capacity | 15,300 kg | maker's document (hitachicm.com) |
| Quick coupler | quick coupler OQ80 | maker's document (hitachicm.com) |
Only figures the maker publishes for this model. Where a figure is missing, no value is shown.
What the ZX390TC-7 figures mean for its attachments
- The main pump delivers up to 576 l/min at 343 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- Hitachi lists this quick coupler for it: quick coupler OQ80. The bracket on every attachment has to match the coupler.The attachments we build with OQ80 brackets
- It digs down to 7,380 mm. That is the deepest trench it can open.
- Its arm is 3,200 mm long.
- Hitachi lists a bucket capacity of 2.5 m³.
- Hitachi gives a lifting capacity of 15,300 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- Engine power is 210 kW.
Figures as published by Hitachi in its own documents.
How the ZX390TC-7 compares with its neighbours
The nearest models by weight, with the difference to the ZX390TC-7 in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow |
|---|---|---|---|
| ZX390TC-7 | 38.5 t | 7,380 mm | 576 l/min |
| Hitachi ZX375US-7 | 35.6 t (-2.9 t) | 6,920 mm (-460) | 472 l/min (-104) |
| Hitachi ZX350LC-7 / ZX350LCN-7 | 35.2 t (-3.3 t) | 7,380 mm | 576 l/min |
| Hidromek HMK 360 LC | 38.7 t (+0.2 t) | 7,630 mm (+250) | 580 l/min (+4) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
ZX390TC-7: what the brochure names
Features Hitachi names in its own brochure for the ZX390TC-7. Some of them may be optional, so check the machine's spec before you order.
- An engine that meets EU Stage V.
- A two-piece boom.
- Telematics for tracking the machine remotely (ConSite).
From Hitachi's published brochure. We keep the source document on file.
Questions about the ZX390TC-7
- What bucket size fits the ZX390TC-7?
- Hitachi lists a bucket capacity of 2.5 m³ for it.
- Which quick coupler is installed on your ZX390TC-7?
- Hitachi lists this coupler for it: quick coupler OQ80. Order attachments with the matching bracket.
Special machine configuration (Demolition). Engineering review is required before you select an attachment. The families below are matched by operating weight only.
Get a priceEach family shows its candidate models by operating-weight range.
Digging & sorting buckets
- DB - heavy duty digging bucket
DB-400 · 6 width variants
- SDB - heavy duty skeleton DB bucket
SDB-400 · 2 width variants
- DBF - flat-top digging bucket for quick coupler
DBF-400 · 6 width variants
- RDBF - flat-top skeleton DBF bucket on rods
RDBF-400 · 3 width variants
- DSX - Nordic heavy duty digging bucket
DS-HD-400 · 3 width variants
Ditching, grading, sloping buckets
- GD - rigid grading & ditching bucket, 12–40 t
GD-400 · 3 width variants
- GDH - heavy duty hydraulic grading & ditching bucket
GDH-400 · 3 width variants
- SB - Dutch profile grading & ditching bucket
SB-400 · 4 width variants
- DCB - grading & ditching bucket with round profile
DCB-400 · 3 width variants
- CW - CW-System compatible quick-coupler
CW-45, CW-45 S, CW-55, CW-U-45, CW-U-45 S
- QC-HS / QC-MS - MS-System compatible quick-coupler
QC-HS-25
- QC-PG - pin-grabber quick-coupler for factory brackets
QC-PG-100, QC-U-PG-100
Hitachi ZX390TC-7: machine data
- Operating weight
- 38,500 – 39,200 kg
- Engine power
- 210 kW
- Maximum digging depth
- 7,380 mm
- Quick coupler
- quick coupler OQ80
As published by Hitachi, retrieved 2026-09-19. Source
Before you order: check the interface
The weight class of the Hitachi ZX390TC-7 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.
Heavy excavators dig rock, load trucks and work in quarries, so wear decides the bucket as much as capacity does. Rock and reinforced buckets carry thicker wear steel, teeth and side cutters, and the bucket is sized to the trucks it loads and to the density of the material.
Quick coupler brackets at this weight
In our model tables, the attachments listed for the Hitachi ZX390TC-7 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 makes of a similar weight
Operating weight within 2 t of the Hitachi ZX390TC-7.
Other Hitachi 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 Hitachi ZX390TC-7.
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 Hitachi 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.