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Caterpillar 308 CR vs Komatsu PC88MR-11
Published specs and dimensions of two mini excavators side by side. Every value comes from the manufacturer document cited on each model page; ≈ marks a unit conversion.
Key differences
The Caterpillar 308 CR is 11 lb (5 kg) heavier, 1 in (30 mm) narrower, 8 in (199 mm) lower and 6 in (144 mm) longer than the Komatsu PC88MR-11.
- Net power: 51.2 kW / 68.7 hp (Caterpillar 308 CR) vs 50.6 kW / 67.9 hp (Komatsu PC88MR-11); Caterpillar 308 CR is higher.
- Track length (overall): 2,880 mm / 9 ft 5 in (Caterpillar 308 CR) vs 2,890 mm / 9 ft 6 in (Komatsu PC88MR-11); Komatsu PC88MR-11 is higher.
- Ground clearance: 350 mm / 13.8 in (Caterpillar 308 CR) vs 410 mm / 16.1 in (Komatsu PC88MR-11); Komatsu PC88MR-11 is higher.
- Tail swing radius: 1,450 mm / 4 ft 9 in (Caterpillar 308 CR) vs 1,485 mm / 4 ft 10 in (Komatsu PC88MR-11); Komatsu PC88MR-11 is higher.
- Ground pressure: 37.2 kPa / 5.4 psi (Caterpillar 308 CR) vs 37.3 kPa / 5.41 psi (Komatsu PC88MR-11); Komatsu PC88MR-11 is higher.
- Displacement: 2.8 L / 171 cu in (Caterpillar 308 CR) vs 2.45 L / 150 cu in (Komatsu PC88MR-11); Caterpillar 308 CR is higher.
Computed from the published figures for each model's stated configuration (listed below the table). Options such as boom, bucket, tracks or tires change these numbers.
Caterpillar 308 CR specs Komatsu PC88MR-11 specs Open in interactive compare Trailer fit: Caterpillar 308 CR Trailer fit: Komatsu PC88MR-11
Side-by-side specs
Use the Metric / Imperial switch at the top to change units. Highlighted rows differ.
| Spec | Caterpillar 308 CR | Komatsu PC88MR-11 |
|---|---|---|
| Weights | ||
| Operating weight | 8,505 kg | 8,500 kg |
| Dimensions | ||
| Overall length | 6,574 mm | 6,430 mm |
| Overall width | 2,300 mm | 2,330 mm |
| Overall height | 2,541 mm | 2,740 mm |
| Track gauge / tread | Not published | 1,870 mm |
| Track length on ground | Not published | 2,235 mm |
| Track length (overall) | 2,880 mm | 2,890 mm |
| Shoe / track width | 450 mm | 450 mm |
| Ground clearance | 350 mm | 410 mm |
| Tail swing radius | 1,450 mm | 1,485 mm |
| Undercarriage / tires | ||
| Undercarriage type | Crawler (rubber tracks) | Crawler (rubber tracks; steel triple-grouser and road-liner optional) |
| Track rollers / shoes per side | Not published | 5 track rollers, 1 carrier roller, 39 shoes per side |
| Ground pressure | ||
| Ground pressure | 37.2 kPa | 37.3 kPa |
| Engine | ||
| Engine model | Cat C2.8 Turbo | Komatsu SAA3D95E-1 |
| Net power | 51.2 kW | 50.6 kW |
| Gross power | Not captured | 50.7 kW |
| Displacement | 2.8 L | 2.45 L |
| Rated speed | 2,200 rpm | 1,850 rpm |
| Hydraulics | ||
| Pump / aux flow | 167 L/min | 160 L/min |
| System / relief pressure | ≈ 28.5 MPa | 26.5 MPa |
| Performance | ||
| Max digging depth | 4,108 mm | 4,565 mm |
| Max reach (at ground) | 6,949 mm | 7,135 mm |
| Dump height / clearance | 4,760 mm | 4,770 mm |
| Breakout / digging force | 62 kN | 61.3 kN |
| Max travel speed | 5.1 km/h | 5 km/h |
Configurations.
Caterpillar 308 CR: Build 08A (C2.8 engine), swing boom. Minimum configuration: cab, rubber tracks, standard stick, blade, no counterweight, no bucket. Tier 4 Final/Stage V.
Komatsu PC88MR-11: 450 mm rubber tracks, 3,405 mm one-piece swing boom, 2,100 mm arm, 0.20 m³ ISO 7451 heaped bucket, blade; EPA Tier 4 Final. (8,500 kg puts it in the <10 t class.)