Attachments for the JCB 420X weight range
Weight Class: Heavy Excavator (30–65 t) Operating Weight: 42,390 kg
- Bucket line
- DB - heavy duty digging bucket 1,400–1,800 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 420X
Families to look at first
- DBF - flat-top digging bucket for quick coupler 1,400–1,800 mm
Quick coupler brackets at this weight
- S90
- CW55
- OQ90
- SW66
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 420X
Each size below has a catalogue row rated for a carrier of 42,390 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 420X.
On a narrow screen the table scrolls sideways.
Buckets
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
Digging & sorting buckets | ||||
| DB - heavy duty digging bucket | DB-500 · 4 width variants | 1,988–2,755 | 1,400–1,800 | 1,515–1,829 |
| SDB - heavy duty skeleton DB bucket | SDB-500 · 2 width variants | 2,622–3,000 | 1,800–2,000 | 1,995–2,172 |
| DBF - flat-top digging bucket for quick coupler Start here Price & lead time Get price & lead time | DBF-500 · 4 width variants | 1,897–2,611 | 1,400–1,800 | 1,470–1,765 |
| RDBF - flat-top skeleton DBF bucket on rods | RDBF-500 · 3 width variants | 2,241–2,999 | 1,600–2,000 | 1,511–1,755 |
Tools
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
Non-bucket attachments | ||||
| RIP - heavy duty ripper | Ripper-H | 684 | ||
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-S90 | 750 | ||
| CW - CW-System compatible quick-coupler CW-System | CW-45, CW-45 S, CW-55, CW-U-45, CW-U-45 S | 435–1,146 |
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 JCB 420X 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.DBS - engineered rock bucket for excavator
Quick coupler brackets at this weight
In our model tables, the attachments listed for the JCB 420X 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 420X.
Send this answer to a colleague or dealer
JCB 420X: DBF - flat-top digging bucket for quick coupler (DBF-500). Shortlisted by operating weight
Sizes are matched to the published operating weight of the 420X.
- Weight Class
- Heavy Excavator (30–65 t)
- Operating Weight
- 42,390 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 JCB, retrieved 2026-09-10. Source
JCB 420X: machine data
- Operating weight
- 42,390 kg
- Engine power
- 240 kW
- Maximum digging depth
- 7,600 mm
- Maximum dump height
- 7,024 mm
- Bucket breakout force
- 249.4 kN
- Arm crowd force
- 222.1 kN
- Max reach
- 11,069 mm maker's document via unitrack.gr
- Arm length
- 2,630–3,230 mm maker's document via unitrack.gr
- Main pump flow
- 622 l/min maker's document via unitrack.gr
- Lift capacity
- 17,536 kg maker's document via unitrack.gr
- Transport width
- 3,340 mm maker's document via unitrack.gr
As published by JCB, retrieved 2026-09-18. Source
What the 420X figures mean for its attachments
- The main pump delivers up to 622 l/min at 350 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- It digs down to 7,600 mm. That is the deepest trench it can open.
- Its maximum reach is 11,069 mm.
- It dumps at up to 7,024 mm, so a truck or skip side has to sit below that height.
- JCB offers arms from 2,630 to 3,230 mm. A longer arm reaches further, a shorter one handles a heavier bucket.
- Bucket breakout force is 249.4 kN and arm crowd force 222.1 kN. That is the force a bucket or ripper works with at the tooth.
- JCB gives a lifting capacity of 17,536 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- Its transport width is 3,340 mm.
- Engine power is 240 kW.
Figures as published by JCB in its own documents.
How the 420X compares with its neighbours
The nearest models by weight, with the difference to the 420X in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow |
|---|---|---|---|
| 420X | 42.39 t | 7,600 mm | 622 l/min |
| JCB 370X | 39.888 t (-2.502 t) | 8,360 mm (+760) | 604 l/min (-18) |
| JCB 520X | 52 t (+9.61 t) | 7,800 mm (+200) | 808 l/min (+186) |
| Hitachi ZX400MC-7 | 42.5 t (+0.11 t) | not published | 576 l/min (-46) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
Other JCB models of a similar weight
Other makes of a similar weight
Operating weight within 2 t of the JCB 420X.
Other JCB 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 JCB 420X.
For publishers: cite or embed this table
Cite this table as https://sieruta.com/en/fit/jcb/jcb-420x, 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.