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Operating-weight guide

Attachments for the Kubota KX037-4 weight range

Bucket line
GP - general purpose digging bucket300–800 mm wide
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Catalogue sizes for the KX037-4

Each size below has a catalogue row rated for a carrier of 3,480 – 3,650 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]
GP - general purpose digging bucketGP-40 · 5 width variants46–159 SAE300–80047–93
GB - rigid grading & ditching bucket, German profileGB-40 · 3 width variants124–176 SAE1,000–1,40081–107
GBH - hydraulic tilt ditching bucket for mini-excavatorGBH-40 · 4 width variants124–190 SAE1,000–1,500128–162
RGP - skeleton rod GP bucketRGP-40 · 2 width variants157–206 SAE800–1,00095–116
SGP - heavy duty skeleton GP bucketSGP-40 · 2 width variants106–128 SAE800–1,000105–129
GPO - GP bucket with perforated bottomGPO-40 · 3 width variants85–128 SAE600–1,00070–99
GPL - general purpose digging bucketGPL-40 · 5 width variants43–145 SAE300–80035–71
GBP - rigid grading & ditching bucket, Italian profileGBP-40 · 3 width variants129–187 SAE1,000–1,40072–98
GBPH - hydraulic tilting grading & ditching bucketGBPH-40 · 3 width variants158–201 SAE1,200–1,500147–167
RGPL - skeleton rod GPL bucketRGPL-40 · 2 width variants145–186 SAE800–1,00066–81
GPLO - GPL bucket with perforated bottomGPLO-40 · 2 width variants103–145 SAE600–80056–71
SGPL - heavy duty skeleton GPL bucket for mini-excavatorSGPL-40 · 2 width variants145–186 SAE800–1,00073–87
BDP mini - clay digging bucket for mini-excavatorBDP-40 · 2 width variants27–40 SAE300–40050–60
SB mini - Dutch profile grading & ditching bucket for mini-excavatorSB-40 · 3 width variants149–184 SAE1,000–1,20093–109
PDP mini - skeleton BDP stone bucketPDP-40 · 4 width variants129–232 SAE600–1,00075–107
DS mini - Scandinavian deep digging bucket for mini-excavatorDS-50 · 3 width variants75–132 SAE400–60057–75
PS mini - Scandinavian universal grading bucket for mini-excavatorPS-60 · 3 width variants209–254 SAE1,200–1,400107–130
PSH mini - hydraulic swivelling grading bucket for mini-excavatorsPS-60 · 3 width variants1,200–1,400
KS mini - cable bucket for mini-excavatorKS-50 · 3 width variants53–107 SAE300–50048–65
KSV mini - Scandinavian profile cable V bucket for mini-excavatorKSV-50 · 3 width variants22–71 SAE100–30034–40
CB mini - hydraulic clamp bucket for mini-excavatorCBR-40113 SAE600107
GKB mini - deep cable digging bucket for mini-excavatorGKB-6015047
RGPR - skeleton rod bucketRGPR-40157 SAE1,00094
RGB - skeleton rod grading & sorting bucketRGB-40200 SAE1,400108
LR mini - straight land rakes for mini-excavatorLR-4 · 2 width variants1,000–1,200127–150
LRS - short land rakes for mini-excavatorsLRS-51,560130
RIP mini - ripper shank for mini-excavatorRipper-5.551
MR mini - multi-ripper for mini-excavatorMRF 40 · 2 width variants600–80062–69
AC mini - asphalt cutter for mini-excavatorAC-643
GRB light - mini-excavator grading beam with lowered massGRB-MIKRO · 3 width variants, GRBH-MIKRO · 3 width variants1,500–2,00086–141
DuoRIP - double ripper for root extractionDuo-Ripper-6365102
GRB - excavator grading beamGRB-MINI · 4 variants, GRBH-MINI · 2 width variants1,000–1,50091–261
RC - root cutterRoot cutter-217013
RRB - root rake bucket profileRRB-401,200148
QC-S - S-System Scandinavian quick-couplerQC-S40-H, QC-S40-H/240, QC-S40-SA, QC-S40-SA/240, QC-U-S40-H, QC-U-S40-H/24030–92
CW - CW-System compatible quick-couplerCW-05, CW-10, CW-U-05, CW-U-1025–179
QC-HS / QC-MS - MS-System compatible quick-couplerQC-HS-03, QC-MS-03, QC-U-HS-0330–90
QC-PG - pin-grabber quick-coupler for factory bracketsQC-ML-M-4032
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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 KX037-4.

Weight Class
Mini Excavator (1–6 t)
Operating Weight
3,480 – 3,650 kg
  • Family-owned group, founded in 1996
  • More than 50,000 attachments delivered
  • Built in our own factory in Poland

Hydraulics for tilt / grab / rotator

Auxiliary flow
61.6 l/min

Source Kubota specification, accessed 2026-09-27 View source

Operating weight as published by Kubota, retrieved 2026-09-10. Source

No open-licence photo of this machine exists. The drawing shows the type (excavator, Mini 1–6 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 KX037-4.

Machine

Kubota KX037-4

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Machine, line and sizes

Kubota KX037-4: GP - general purpose digging bucket (GP-40)

KX037-4 at a glance

FigureValueSource
Max dig depth3,410 mmmaker's website (ke.kubota-eu.com)
Main pump flow81.4 l/minmaker's document (ke.kubota-eu.com)
Auxiliary flow61.6 l/minmaker's website (ke.kubota-eu.com)
Auxiliary pressure206 barmaker's document (ke.kubota-eu.com)
Lift capacity1,125 kgmaker's document (ke.kubota-eu.com)
Transport width1,550 mmmaker's document (ke.kubota-eu.com)

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

What the KX037-4 figures mean for its attachments

  • Its auxiliary circuit is rated at 61.6 l/min and 206 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 81.4 l/min at 245 bar. That is the pump output of the whole machine, not the flow an attachment gets.
  • It digs down to 3,410 mm. That is the deepest trench it can open.
  • Bucket breakout force is 30 kN and arm crowd force 17.1 kN. That is the force a bucket or ripper works with at the tooth.
  • Kubota gives a lifting capacity of 1,125 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
  • For transport it measures 4,900 x 1,550 x 2,470 mm (length, width, height).
  • Engine power is 17.8 kW.

Figures as published by Kubota in its own documents.

How the KX037-4 compares with its neighbours

The nearest models by weight, with the difference to the KX037-4 in parentheses where both makers publish the figure.

ModelOperating weightMax dig depthMain pump flowAuxiliary flow
KX037-43.48 t3,410 mm81.4 l/min61.6 l/min
Kubota KX101-3α43.52 t (+0.04 t)3,300 mm (-110)96.6 l/min (+15.2)55 l/min (-6.6)
Kubota U35-3α33.59 t (+0.11 t)3,350 mm (-60)96.6 l/min (+15.2)55 l/min (-6.6)
CASE CX35D3.48 t2,870 mm (-540)101 l/min (+19.6)31 l/min (-30.6)

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

KX037-4: build years and variants

Build years: 2019–2026

Variants

  • KX037-4 GL (2019–2026)
  • KX037-4 KGL (2019–2026)

Years and variants as listed in the LECTURA Specs database.

KX037-4: what the brochure names

Features Kubota names in its own brochure for the KX037-4. Some of them may be optional, so check the machine's spec before you order.

  • An engine that meets EU Stage V.
  • A load-sensing hydraulic system.
  • A dozer blade.
  • Two-speed travel.

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

Questions about the KX037-4

Can the KX037-4 run a hydraulic attachment?
Yes, if the tool's rated range covers the auxiliary circuit: 61.6 l/min at 206 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 Kubota KX037-4. Each set lists the buckets that match the machine's operating weight.

Kubota KX037-4: machine data

Operating weight
3,480 – 3,650 kg
Engine power
17.8 kW
Maximum digging depth
3,410 mm
Bucket breakout force
30 kN
Arm crowd force
17.1 kN
Auxiliary circuit flow
61.6 l/min
Auxiliary circuit pressure
206 bar

As published by Kubota, retrieved 2026-09-27. Source

Before you order: check the interface

The weight class of the Kubota KX037-4 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.

On a mini excavator the weight of the attachment counts for more than on a larger machine, because every kilogram of bucket is taken from lift capacity and stability. A narrow trenching bucket and a wide grading bucket are the usual pair, and many machines run a small quick coupler to change between them.

Quick coupler brackets at this weight

In our model tables, the attachments listed for the Kubota KX037-4 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 makes of a similar weight

Operating weight within 2 t of the Kubota KX037-4.

Other Kubota 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 Kubota KX037-4.

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 Kubota 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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