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Operating-weight guide

Attachments for the Mecalac 12MRX weight range

Bucket line
DB - heavy duty digging bucket400–1200 mm wide
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Catalogue sizes for the 12MRX

Each size below has a catalogue row rated for a carrier of 10,400 – 11,200 kg operating weight. Tell us which sizes you want and we reply with an offer.

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AttachmentSizesCapacity [dm³]Width [mm]Weight [kg]
DB - heavy duty digging bucketDB-120 · 6 width variants139–597 SAE400–1,200156–332
SDB - heavy duty skeleton DB bucketSDB-120 · 2 width variants435–548 SAE1,000–1,200286–333
DBF - flat-top digging bucket for quick couplerDBF-120 · 6 width variants160–673 SAE400–1,200155–326
RDBF - flat-top skeleton DBF bucket on rodsRDBF-120 · 2 width variants536–673 SAE1,000–1,200271–308
GDH - heavy duty hydraulic grading & ditching bucketGDH-120 · 4 width variants345–453 SAE1,400–1,800358–411
DCB - grading & ditching bucket with round profileDCB-120 · 4 width variants351–462 SAE1,400–1,800218–270
CB - heavy duty hydraulic clamp bucketCBR-1204301,000355
TH - hydraulic thumb for excavatorTH-16700310
MR - heavy duty excavator multi-ripperMR-171,300415
DuoRIP - double ripper for root extractionDuo-Ripper-12450220
GRB - excavator grading beamGRB midi · 6 variants, GRB maxi · 6 variants2,000–3,000216–680
PS mini - Scandinavian universal grading bucket for mini-excavatorPS-120 · 5 width variants356–556 SAE1,400–2,000185–282
PSH mini - hydraulic swivelling grading bucket for mini-excavatorsPS-120 · 5 width variants1,400–2,000
GKB mini - deep cable digging bucket for mini-excavatorGKB-12020079
RGB - skeleton rod grading & sorting bucketRGB-120415 SAE1,800234
LRS - short land rakes for mini-excavatorsLRS-151,980380
RIP mini - ripper shank for mini-excavatorRipper-14221
MR mini - multi-ripper for mini-excavatorMRF 140 · 2 width variants1,000–1,200221–228
AC mini - asphalt cutter for mini-excavatorAC-1067
QC-S - S-System Scandinavian quick-couplerQC-S45-H, QC-S50, QC-S45-SA, QC-U-S45-H, QC-U-S5070–232
CW - CW-System compatible quick-couplerCW-10, CW-20, CW-20 S, CW-U-10, CW-U-20, CW-U-20 S65–190
QC-HS / QC-MS - MS-System compatible quick-couplerQC-HS-08, QC-HS-10, QC-MS-08, QC-MS-10, QC-U-HS-08, QC-U-HS-1090–232
QC-PG - pin-grabber quick-coupler for factory bracketsQC-PG-60, QC-PG-65, QC-ML-M-50, QC-ML-M-55, QC-ML-M-60, QC-U-PG-60, QC-U-PG-6558–352
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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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Cite this table as https://sieruta.com/en/fit/mecalac/mecalac-12mrx, figures as of 2026-09-11.

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Sizes are matched to the published operating weight of the 12MRX.

Weight Class
Midi Excavator (6–12 t)
Operating Weight
10,400 – 11,200 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 Mecalac, retrieved 2026-09-11. Source

No open-licence photo of this machine exists. The drawing shows the type (excavator, Midi 6–12 t), not this machine.

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
213

Not sure which system it is? Three measurements tell us which bracket you need.

  1. Measure the diameter of both pins.
  2. Measure the distance between the pin centres.
  3. 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 12MRX.

Machine

Mecalac 12MRX

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Machine, line and sizes

Mecalac 12MRX: DBF - flat-top digging bucket for quick coupler (DBF-120)

12MRX at a glance

FigureValueSource
Max dig depth4,100 mmmaker's document (mecalac.com)
Max reach7,125 mmmaker's document (mecalac.com)
Max dump height4,077 mmmaker's document (mecalac.com)
Arm length2,210 mmmaker's document (mecalac.com)
Main pump flow157 l/minmaker's document (mecalac.com)
Auxiliary flow157 l/minmaker's document (mecalac.com)
Auxiliary pressure300 barmaker's document (mecalac.com)
Bucket capacity0.15–0.63 m³maker's document (mecalac.com)
Bucket width350–1,200 mmmaker's document (mecalac.com)
Quick couplerCONNECT hydraulic quick couplermaker's document (mecalac.com)
Transport width2,397 mmmaker's document (mecalac.com)

Only figures the maker publishes for this model. Where a figure is missing, no value is shown.

What the 12MRX figures mean for its attachments

  • Its auxiliary circuit is rated at 157 l/min and 300 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 157 l/min at 300 bar. That is the pump output of the whole machine, not the flow an attachment gets.
  • Mecalac lists this quick coupler for it: CONNECT hydraulic quick coupler. The bracket on every attachment has to match the coupler.
  • It digs down to 4,100 mm. That is the deepest trench it can open.
  • Its maximum reach is 7,125 mm.
  • It dumps at up to 4,077 mm, so a truck or skip side has to sit below that height.
  • Its arm is 2,210 mm long.
  • Mecalac lists buckets from 350 to 1,200 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-120); SDB - heavy duty skeleton DB bucket (SDB-120); DBF - flat-top digging bucket for quick coupler (DBF-120); RDBF - flat-top skeleton DBF bucket on rods (RDBF-120); CB - heavy duty hydraulic clamp bucket (CBR-120)
  • Mecalac lists bucket capacities from 0.15 to 0.63 m³.
  • Its tail swing radius is 1,385 mm, which matters beside a wall or in a live traffic lane.
  • Its transport width is 2,397 mm.
  • Engine power is 85 kW.

Figures as published by Mecalac in its own documents.

How the 12MRX compares with its neighbours

The nearest models by weight, with the difference to the 12MRX in parentheses where both makers publish the figure.

ModelOperating weightMax dig depthMain pump flowAuxiliary flow
12MRX10.4 t4,100 mm157 l/min157 l/min
Mecalac 11MWR10 t (-0.4 t)3,800 mm (-300)165 l/min (+8)120 l/min (-37)
Mecalac 12MTX9.7 t (-0.7 t)4,100 mm157 l/min157 l/min
Caterpillar 310 - Tier 4 / Stage V10.43 t (+0.03 t)5,211 mm (+1,111)233 l/min (+76)131 l/min (-26)

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

12MRX: what the brochure names

Features Mecalac names in its own brochure for the 12MRX. Some of them may be optional, so check the machine's spec before you order.

  • Use with a tiltrotator.
  • An offset boom.
  • Operator protection certified to ROPS and FOPS.
  • An engine that meets EU Stage V.

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

Questions about the 12MRX

What bucket width fits the 12MRX?
Mecalac lists buckets from 350 to 1,200 mm wide for it. Pick a width in that range from the sizes above.
Which quick coupler is installed on your 12MRX?
Mecalac lists this coupler for it: CONNECT hydraulic quick coupler. Order attachments with the matching bracket.
Can the 12MRX run a hydraulic attachment?
Yes, if the tool's rated range covers the auxiliary circuit: 157 l/min at 300 bar.

Each family shows its candidate models by operating-weight range.

Bucket sets for this machine

Sets of one bucket profile that include buckets listed for the Mecalac 12MRX. Each set lists the buckets that match the machine's operating weight.

Mecalac 12MRX: machine data

Operating weight
10,400 – 11,200 kg
Engine power
85 kW
Maximum digging depth
4,100 mm
Maximum dump height
4,077 mm
Tail swing radius
1,385 mm
Quick coupler
CONNECT hydraulic quick coupler
Auxiliary circuit flow
157 l/min
Auxiliary circuit pressure
300 bar

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

Before you order: check the interface

The weight class of the Mecalac 12MRX 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.

A midi excavator is often the main machine on a site, trenching, loading and grading in the same day. Buyers usually start with a general purpose bucket, a grading bucket and a quick coupler, then add other tools when the work calls for them.

Quick coupler brackets at this weight

In our model tables, the attachments listed for the Mecalac 12MRX at its weight are built with these brackets. Each code opens the models that list it.

  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:

Other Mecalac 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 Mecalac 12MRX.

Get a price Custom Engineering

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 Mecalac 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.

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