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Breakout-force guide

Buckets and attachments for the Komatsu WB93S-5

Bucket line
GP - general purpose digging bucket300–1,000 mm wide
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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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Which end is the attachment for?

Catalogue sizes for the WB93S-5

Each size below has a catalogue row rated for an excavator of about 8.8 t. That is the class whose bucket breakout force matches this backhoe loader. 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 WB93S-5.

On a narrow screen the table scrolls sideways.

Tools

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

Non-bucket attachments

GRB - excavator grading beamGRB-MINI · 4 variants, GRBH-MINI · 2 width variants, GRB midi · 6 variants1,000–2,50091–530

Other mini-ex attachments

RIP mini - ripper shank for mini-excavatorRipper-1098
AC mini - asphalt cutter for mini-excavatorAC-1067

Buckets

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

Standard mini-ex buckets set No. 1

GP - general purpose digging bucketStart herePrice & lead timeGet price & lead timeGP-95 · 6 width variants100–377300–1,00086–160
GBH - hydraulic tilt ditching bucket for mini-excavatorStart herePrice & lead timeGet price & lead timeGBH-90 · 3 width variants275–3341,500–1,800267–297
GPO - GP bucket with perforated bottomGPO-95 · 2 width variants154–183800–1,000130–148

Standard mini-ex buckets set No. 2

GPL - general purpose digging bucketGPL-95 · 6 width variants82–367300–1,00076–172
GBP - rigid grading & ditching bucket, Italian profileGBP-95 · 3 width variants417–5111,500–1,800222–260
GBPH - hydraulic tilting grading & ditching bucketGBPH-95 · 3 width variants417–5111,500–1,800332–370

Dutch mini-ex buckets set No. 3

BDP mini - clay digging bucket for mini-excavatorBDP-90 · 2 width variants88–120400–500126–141
PDP mini - skeleton BDP stone bucketPDP-90 · 3 width variants344–546800–1,200163–209
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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 attachment. See the certificates.

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The front end of this backhoe loader

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
Drawing of a bracket with the pin diameter (1), the pin centre distance (2) and the ear width (3) marked

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.

Before you order: check the interface

The weight class of the Komatsu WB93S-5 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 backhoe loader digs at the rear and loads at the front, so the rear bucket is chosen for trenching and the loader bucket for moving material. The rear quick coupler, where the machine has one, sets the bracket every rear attachment needs; the pin and stick checks below still decide the fit.

Quick coupler brackets at this weight

In our model tables, the attachments listed for the Komatsu WB93S-5 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:

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 WB93S-5.

Machine

Komatsu WB93S-5

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Machine, line and sizes

Komatsu WB93S-5: GP - general purpose digging bucket (GP-95)

Sizes are matched to the bucket breakout force of the WB93S-5, which is about what a 8.8 t excavator gives.

Weight Class
Midi (6–10 t)
Operating Weight
8,550 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 Komatsu, retrieved 2026-10-05. Source

We have no openly licensed photo of this machine. The drawing shows the type (backhoe loader, Midi 6–10 t), not this machine.

Komatsu WB93S-5: machine data

Max dig depth
4,850 mmmaker's document (komatsu.eu)
Max reach
5,760 mmmaker's document (komatsu.eu)
Max dump height
4,200 mmmaker's document (komatsu.eu)
Main pump flow
165 l/minmaker's document (komatsu.eu)
Quick coupler
Mechanical quick couplermaker's document (komatsu.eu)
Transport width
2,420 mmmaker's document (komatsu.eu)
Loader bucket capacity
1.1 m³maker's document (komatsu.eu)
Loader dump height
2,820 mmmaker's document (komatsu.eu)
Loader lift capacity
3,900 kgmaker's document (komatsu.eu)
Loader breakout force
63.83 kNmaker's document (komatsu.eu)

What the WB93S-5 figures mean for its attachments

  • The main pump delivers up to 165 l/min at 250 bar. That is the pump output of the whole machine, not the flow an attachment gets.
  • Komatsu lists this quick coupler for it: mechanical quick-coupler. The bracket on every attachment has to match the coupler.
  • It digs down to 4,850 mm. That is the deepest trench it can open.
  • Its maximum reach is 5,760 mm.
  • It dumps at up to 4,200 mm, so a truck or skip side has to sit below that height.
  • Its transport width is 2,420 mm.

Figures as published by Komatsu in its own documents.

How the WB93S-5 compares with its neighbours

The nearest models by weight, with the difference to the WB93S-5 in parentheses where both makers publish the figure.

ModelOperating weightMax dig depthMain pump flow
WB93S-58.55 t4,850 mm165 l/min
Komatsu WB97S-58.7 t (+0.15 t)5,050 mm (+200)165 l/min
Komatsu WB97S-88.26 t (-0.29 t)4,980 mm (+130)165 l/min
MST 542S8.58 t (+0.03 t)not publishednot published

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

More Komatsu backhoe loaders

Other makes of a similar weight

Operating weight within 2 t of the Komatsu WB93S-5.

Other Komatsu 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 Komatsu WB93S-5.

Questions about the WB93S-5

Which quick coupler is installed on your WB93S-5?
Komatsu lists this coupler for it: mechanical quick-coupler. Order attachments with the matching bracket.
For publishers: cite or embed this table

Cite this table as https://sieruta.com/en/fit/komatsu/komatsu-wb93s-5, figures as of 2026-10-05.

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