Komatsu PC50MR-2
Series: Komatsu Midi Excavator
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Komatsu midi excavators PC40 to PC95 – the 4 to 10 tonne class between mini and standard: MR, US and UU for short and compact tail, 28 to 63 kW
Midi excavators are the class between 4 and 10 tonnes that works on urban civil-engineering sites, in road building and landscaping, where a mini is too weak and a 14-tonner too big. Komatsu's number gives the weight class in hundreds of kilograms – PC45 about 4.5 t, PC55 5.5 t, PC78 7.8 t, PC88 8.8 t, PC95 9.5 t – PC standing for Power Crawler. The codes describe the tail: MR for Mini Radius, the short-tail excavator, US for Ultra Short, an upper structure that swings almost within the track width, UU for the Japanese Ultra Urban version with an additionally swinging boom for work along walls; the digits -2, -3, -6 and -8 are generations. PC60, PC75 and PC80 with the suffix -1 are the standard excavators of the 1980s from which the class grew; PC130-8 and PC160LC-8 are 13- and 16-tonners that the sorting placed here.
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The register lists 20 versions with 28.2 to 62.6 kW from four-cylinders of 1,996 to 4,461 cm³ – Komatsu's own 4D88, 4D94, 4D95 and 4D107 – rated speeds of 1,750 to 2,500 rpm, operating weights from 4,670 to 16,680 kg, lengths from 6,063 to 8,568 mm and heights from 2,730 to 3,030 mm.
The European MR models are built at the Este plant near Padua, the Japanese US and UU types in Japan; the short-tail layout has long been standard in this class because the excavators work beside roads with moving traffic.
On used machines, operating hours, play in boom, stick and offset-boom bearing, the condition of the undercarriage (steel or rubber tracks), leak-free cylinders and the auxiliary hydraulics for breaker and tiltrotator, almost always retrofitted in this class, are what count.
Sources: Kennwerte der Modelle Komatsu Midibagger, Komatsu Europe Midibagger (Hersteller)
Technical data
Engine
| Engine model | 3D88E-5correct |
|---|---|
| Power | 29.4 kWcorrect |
| Rated speed | 2,350 rpmcorrect |
| Torque | 139.1correct |
| Speed at max. torque | 1,440 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 2,195.9 cm³correct |
| Aspiration | Naturalcorrect |
| Coolant capacity | 7.2 lcorrect |
| Engine oil capacity | 7.9 lcorrect |
Dimensions and weights
| Ground clearance | 356.6correct |
|---|---|
| Unladen weight | 5,039.4 kgcorrect |
Working data
| Hydraulic oil capacity | 54.9 lcorrect |
|---|---|
| Fuel tank capacity | 65.1 lcorrect |
Other data
| Cab height | 2,615.2correct |
|---|---|
| System voltage | 12 Vcorrect |
Where this model stands
Power-to-weight ratio: 5.8 kW/t (29 kW / 5 t)
Stronger than 4% of the excavators & compaction in the register — out of 1,666 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Komatsu PC50MR-2 have?
The Komatsu PC50MR-2 delivers 29.4 kW.
How much does the Komatsu PC50MR-2 weigh?
The unladen weight is 5,039 kg.
What engine does the Komatsu PC50MR-2 have?
4 cylinders, 2,196 cm³ displacement.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 16 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Excavator in 3D section
Turn the model, look inside and click an assembly — each one is explained.