Attachments for the Komatsu PC45MR-3 weight range
- Bucket line
- GP - general purpose digging bucket300–600 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.
Catalogue sizes for the PC45MR-3
Each size below has a catalogue row rated for a carrier of 4,590 – 4,780 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 PC45MR-3.
On a narrow screen the table scrolls sideways.
Buckets
Tools
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
Other mini-ex attachments | ||||
| LR mini - straight land rakes for mini-excavator | LR-6 · 2 width variants | 1,000–1,200 | 158–187 | |
| LRS - short land rakes for mini-excavators | LRS-5 | 1,560 | 130 | |
| RIP mini - ripper shank for mini-excavator | Ripper-5.5 | 51 | ||
| MR mini - multi-ripper for mini-excavator | MRF 75 · 2 width variants | 800–1,000 | 117–121 | |
| AC mini - asphalt cutter for mini-excavator | AC-6 | 43 | ||
| GRB light - mini-excavator grading beam with lowered mass | GRB-MIKRO · 3 width variants, GRBH-MIKRO · 3 width variants | 1,500–2,000 | 86–141 | |
Non-bucket attachments | ||||
| DuoRIP - double ripper for root extraction | Duo-Ripper-6 | 365 | 102 | |
| GRB - excavator grading beam | GRB-MINI · 4 variants, GRBH-MINI · 2 width variants | 1,000–1,500 | 91–261 | |
Also available | ||||
| RC - root cutter | Root cutter-6 | 200 | 20 | |
| RRB - root rake bucket profile | RRB-60 | 1,500 | 222 | |
Quick couplers
| Attachment | Sizes | Heaped capacity ISO 7451 [dm³] | Width [mm] | Weight [kg] |
|---|---|---|---|---|
| QC-S - S-System Scandinavian quick-couplerStart herePrice & lead timeGet price & lead timeS-System (Scandinavian) | QC-S40-H, QC-S40-H/240, QC-S40-SA, QC-S40-SA/240, QC-U-S40-H, QC-U-S40-H/240 | 30–92 | ||
| CW - CW-System compatible quick-couplerCW-System | CW-10, CW-U-10 | 65–179 | ||
| QC-HS / QC-MS - MS-System compatible quick-couplerMS system | QC-HS-03, QC-MS-03, QC-U-HS-03 | 30–90 | ||
| QC-PG - pin-grabber quick-coupler for factory bracketsPin-grabber | QC-PG-40, QC-PG-45, QC-ML-M-40, QC-U-PG-40, QC-U-PG-45 | 32–142 |
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.
Message us on WhatsAppPhotos and voice notes are welcome.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
Not sure which system it is? Three measurements tell us which bracket you need.
- Measure the diameter of both pins.
- Measure the distance between the pin centres.
- 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 PC45MR-3 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 Komatsu PC45MR-3 at its weight are built with these brackets. Each code opens the models that list it.
- 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 PC45MR-3.
Send this answer to a colleague or dealer
Komatsu PC45MR-3: GP - general purpose digging bucket (GP-60)
Sizes are matched to the published operating weight of the PC45MR-3.
- Weight Class
- Mini Excavator (1–6 t)
- Operating Weight
- 4,590 – 4,780 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 2026-09-10. Source
Komatsu PC45MR-3: machine data
- Operating weight
- 4,590 – 4,780 kg
- Engine power
- 29.5 kW
- Maximum digging depth
- 3,750 mm
- Bucket breakout force
- 33.9 kN
- Quick coupler
- Komatsu mechanical quick-coupler
- Arm length
- 1,375–1,770 mmmaker's document (komatsu.eu)
- Bucket capacity
- 0.07–0.175 m³maker's document (komatsu.eu)
- Bucket width
- 300–700 mmmaker's document (komatsu.eu)
- Lift capacity
- 2,345 kgmaker's document (komatsu.eu)
As published by Komatsu, retrieved 2026-09-17. Source
- Pin diameter
- 45 mmSource: Tuff Buckets.Listed for another generation of this model.
A guide only. Measure the pins before you order.
What the PC45MR-3 figures mean for its attachments
- Komatsu lists this quick coupler for it: Komatsu mechanical quick-coupler. The bracket on every attachment has to match the coupler.
- It digs down to 3,750 mm. That is the deepest trench it can open.
- Komatsu offers arms from 1,375 to 1,770 mm. A longer arm reaches further, a shorter one handles a heavier bucket.
- Komatsu lists buckets from 300 to 700 mm wide for this machine.Our sizes in that range: GP - general purpose digging bucket (GP-60); GPO - GP bucket with perforated bottom (GPO-60); GPL - general purpose digging bucket (GPL-60); GPLO - GPL bucket with perforated bottom (GPLO-60); BDP mini - clay digging bucket for mini-excavator (BDP-50); PDP mini - skeleton BDP stone bucket (PDP-60); DS mini - Scandinavian deep digging bucket for mini-excavator (DS-50); KS mini - cable bucket for mini-excavator (KS-50); KSV mini - Scandinavian profile cable V bucket for mini-excavator (KSV-50); CB mini - hydraulic clamp bucket for mini-excavator (CBR-60)
- Komatsu lists bucket capacities from 0.07 to 0.175 m³.
- Bucket breakout force is 33.9 kN. That is the force a bucket or ripper works with at the tooth.
- Komatsu gives a lifting capacity of 2,345 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- Engine power is 29.5 kW.
Figures as published by Komatsu in its own documents.
How the PC45MR-3 compares with its neighbours
The nearest models by weight, with the difference to the PC45MR-3 in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth |
|---|---|---|
| PC45MR-3 | 4.59 t | 3,750 mm |
| Komatsu PC40 MRx | 4.44 t (-0.15 t) | 3,400 mm (-350) |
| Komatsu PC50MR-2 | 4.77 t (+0.18 t) | 4,160 mm (+410) |
| Caterpillar 304 | 4.47 t (-0.12 t) | 3,510 mm (-240) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
PC45MR-3: build years and variants
Build years: 2008–2017
Variants
- PC45MR-3 (2008–2017)
Years and variants as listed in the LECTURA Specs database.
PC45MR-3: what the brochure names
Features Komatsu names in its own brochure for the PC45MR-3. Some of them may be optional, so check the machine's spec before you order.
- A load-sensing hydraulic system.
- Proportional control of the auxiliary hydraulics, for tilt buckets, augers and breakers.
- A short tail swing, for work next to walls and traffic.
- Boom swing, for digging along walls and around obstacles.
From Komatsu's published brochure. We keep the source document on file.
Other Komatsu models of a similar weight
Other makes of a similar weight
Operating weight within 2 t of the Komatsu PC45MR-3.
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 PC45MR-3.
Questions about the PC45MR-3
- What bucket width fits the PC45MR-3?
- Komatsu lists buckets from 300 to 700 mm wide for it. Pick a width in that range.
- Which quick coupler is installed on your PC45MR-3?
- Komatsu lists this coupler for it: Komatsu 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-pc45mr-3, 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.