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Operating-weight guide

Attachments for the Hidromek HMK 390 LC HD weight range

Weight Class: Heavy Excavator (30–65 t) Operating Weight: 40,400 kg

Bucket line
DB - heavy duty digging bucket 1,400–1,600 mm wide
Price & lead time Get price & lead time
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  • 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.

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The short version for the HMK 390 LC HD

Families to look at first

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 HMK 390 LC HD

Each size below has a catalogue row rated for a carrier of 40,400 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 HMK 390 LC HD.

On a narrow screen the table scrolls sideways.

Buckets

AttachmentSizesHeaped capacity ISO 7451 [dm³]Width [mm]Weight [kg]

Digging & sorting buckets

DB - heavy duty digging bucketDB-500 · 3 width variants1,988–2,3671,400–1,6001,515–1,672
SDB - heavy duty skeleton DB bucketSDB-500 · 2 width variants2,622–3,0001,800–2,0001,995–2,172
DBF - flat-top digging bucket for quick coupler Start here Price & lead time Get price & lead timeDBF-500 · 3 width variants1,897–2,2411,400–1,6001,470–1,617
RDBF - flat-top skeleton DBF bucket on rodsRDBF-500 · 3 width variants2,241–2,9991,600–2,0001,511–1,755

Tools

AttachmentSizesHeaped capacity ISO 7451 [dm³]Width [mm]Weight [kg]

Non-bucket attachments

RIP - heavy duty ripperRipper-H684

Quick couplers

Coupler sizes within this machine's published weight range. Not a confirmed fit.

AttachmentSizesHeaped 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-S90750
CW - CW-System compatible quick-coupler CW-SystemCW-45, CW-45 S, CW-55, CW-U-45, CW-U-45 S435–1,146
Price & lead time Get price & lead time: HMK 390 LC HD

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.

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Before you order: check the interface

The weight class of the Hidromek HMK 390 LC HD 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 Hidromek HMK 390 LC HD 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.

  1. Measure the diameter of both bucket pins.
  2. Measure the distance between the pin centres.
  3. Measure the inside width between the stick ears.
  4. 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 HMK 390 LC HD.

Machine

Hidromek HMK 390 LC HD

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Machine, line and sizes

Hidromek HMK 390 LC HD: DBF - flat-top digging bucket for quick coupler (DBF-500). Shortlisted by operating weight

Sizes are matched to the published operating weight of the HMK 390 LC HD.

Weight Class
Heavy Excavator (30–65 t)
Operating Weight
40,400 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 Hidromek, retrieved 2026-09-12. Source

We have no openly licensed photo of this machine. The drawing shows the type (excavator, Heavy 30–65 t), not this machine.

Hidromek HMK 390 LC HD: machine data

Operating weight
40,400 kg
Engine power
210 kW
Maximum digging depth
6,560 mm
Maximum dump height
7,580 mm
Bucket breakout force
228.5 kN
Arm crowd force
200.1 kN
Quick coupler
Quick coupler
Max reach
11,840 mm maker's document (hidromek.com)
Arm length
2,200–4,000 mm maker's document (hidromek.com)
Main pump flow
600 l/min maker's document (hidromek.com)
Bucket capacity
1.2–2.4 m³ maker's document (hidromek.com)
Bucket width
1,150–2,000 mm maker's document (hidromek.com)
Lift capacity
19,000 kg maker's document (hidromek.com)
Transport width
3,300 mm maker's document (hidromek.com)

As published by Hidromek, retrieved 2026-09-17. Source

What the HMK 390 LC HD figures mean for its attachments

  • The main pump delivers up to 600 l/min at 343 bar. That is the pump output of the whole machine, not the flow an attachment gets.
  • Hidromek lists this quick coupler for it: Quick coupler. The bracket on every attachment has to match the coupler.
  • It digs down to 6,560 mm. That is the deepest trench it can open.
  • Its maximum reach is 11,840 mm.
  • It dumps at up to 7,580 mm, so a truck or skip side has to sit below that height.
  • Hidromek offers arms from 2,200 to 4,000 mm. A longer arm reaches further, a shorter one handles a heavier bucket.
  • Hidromek lists buckets from 1,150 to 2,000 mm wide for this machine.Our sizes in that range: DB - heavy duty digging bucket (DB-500); SDB - heavy duty skeleton DB bucket (SDB-500); DBF - flat-top digging bucket for quick coupler (DBF-500); RDBF - flat-top skeleton DBF bucket on rods (RDBF-500)
  • Hidromek lists bucket capacities from 1.2 to 2.4 m³.
  • Bucket breakout force is 228.5 kN and arm crowd force 200.1 kN. That is the force a bucket or ripper works with at the tooth.
  • Hidromek gives a lifting capacity of 19,000 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
  • For transport it measures 10,920 x 3,300 x 3,640 mm (length, width, height).
  • Engine power is 210 kW.

Figures as published by Hidromek in its own documents.

How the HMK 390 LC HD compares with its neighbours

The nearest models by weight, with the difference to the HMK 390 LC HD in parentheses where both makers publish the figure.

ModelOperating weightMax dig depthMain pump flow
HMK 390 LC HD40.4 t6,560 mm600 l/min
Hidromek HMK 360 LC38.7 t (-1.7 t)7,630 mm (+1,070)580 l/min (-20)
Hidromek HMK 390 LC LR42.1 t (+1.7 t)11,870 mm (+5,310)600 l/min
Hyundai HX40040.36 t (-0.04 t)8,110 mm (+1,550)720 l/min (+120)

Figures as each maker publishes them. A difference is shown only where both machines have a published value.

HMK 390 LC HD: build years and variants

Build years: 2019–2026

Variants

  • HMK 390 LC HD (2019–2021)
  • HMK 390 LC HD (2021–2026)

Years and variants as listed in the LECTURA Specs database.

HMK 390 LC HD: what the brochure names

Features Hidromek names in its own brochure for the HMK 390 LC HD. Some of them may be optional, so check the machine's spec before you order.

  • Operator protection certified to ROPS and FOPS.
  • A rear or side view camera.
  • Proportional control of the auxiliary hydraulics, for tilt buckets, augers and breakers.
  • Work modes you select from the cab.

From Hidromek's published brochure. We keep the source document on file.

Other Hidromek 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 Hidromek HMK 390 LC HD.

Questions about the HMK 390 LC HD

What bucket width fits the HMK 390 LC HD?
Hidromek lists buckets from 1,150 to 2,000 mm wide for it. Pick a width in that range.
Which quick coupler is installed on your HMK 390 LC HD?
Hidromek names no coupler system for it, so we cannot know which coupler your machine carries until you tell us. The attachments we list for the HMK 390 LC HD are built with these brackets: S90, CW55, OQ90, SW66. Pick your coupler above or send us a photo of its nameplate, and we check the bracket before we quote.
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Cite this table as https://sieruta.com/en/fit/hidromek/hidromek-hmk-390-lc-hd, figures as of 2026-09-12.

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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.