SPECS / COMPARISON
Komatsu PC30R-8 vs Case CX31B
A detailed comparison of the Komatsu PC30R-8 and the Case CX31B. Click a model name to view its full specifications.
Horsepower
Komatsu PC30R-820 kW (27 HP)
Case CX31B21 kW (28 HP)
Weight
Komatsu PC30R-83190 kg (7033 lbs)
Case CX31B3030 kg (6679 lbs)
Operating Weight
Komatsu PC30R-83190 kg (7033 lbs)
Case CX31B3030 kg (6679 lbs)
| Specification | Komatsu PC30R-8 Mini Excavators | Case CX31B Mini Excavators |
|---|---|---|
| Excavator Type | Mini Excavator | Mini Excavator |
| Weight | 3190 kg (7033 lbs) | 3030 kg (6679 lbs) |
| Horsepower | 20 kW (27 HP) | 21 kW (28 HP) |
| Digging Depth | 293 cm (115 in.) | 280 cm (110 in.) |
| Max Digging Depth | 293 cm (115 in.) | 280 cm (110 in.) |
| Max Loading Height | 344.4 cm (135.6 in.) | 335.3 cm (132.0 in.) |
| Max Reach Along Ground | 487.7 cm (192.0 in.) | 472.4 cm (186.0 in.) |
| Max Vertical Wall Digging Depth | 219.5 cm (86.4 in.) | 216.4 cm (85.2 in.) |
| Overall Length | 487.7 cm (192.0 in.) | 438.9 cm (172.8 in.) |
| Track Length | 1920.2 cm (756.0 in.) | 1859.3 cm (732.0 in.) |
| Length of Track on Ground | 161.5 cm (63.6 in.) | 155.4 cm (61.2 in.) |
| Reference Bucket Capacity | 0.2 m2 (0.2 cu yds) | 0.2 m2 (0.2 cu yds) |
| Max Bucket Capacity | 0.2 m2 (0.2 cu yds) | 0.2 m2 (0.2 cu yds) |
| Min Bucket Capacity | 0.1 m2 (0.1 cu yds) | 0.1 m2 (0.1 cu yds) |
| Ground Clearance | 30.5 cm (12.0 in.) | 33.5 cm (13.2 in.) |
| Tail Swing Radius | 140.2 cm (55.2 in.) | — |
| Overall Width | 152.4 cm (60.0 in.) | 155.4 cm (61.2 in.) |
| Engine Make | Komatsu | Yanmar |
| Engine Model | 3 D84E | 3 TNV88-BPYB |
| Net Power | 20 kW (27 HP) | 21 kW (28 HP) |
| Gross Power | 22.4 kW (30.1 HP) | 23.2 kW (31.1 HP) |
| Rated Power | 2700 RPM | 2400 RPM |
| Hydraulic Pump Flow Capacity | 83 LPM (22.5 GPM) | 76 LPM (20.2 GPM) |
| Hydraulic System Capacity | 33.3 l (8.8 gal) | 48.1 l (12.7 gal) |
| Relief Valve Pressure | 245 Bar (3560 psi) | 230 Bar (3336 psi) |
| Operating Weight | 3190 kg (7033 lbs) | 3030 kg (6679 lbs) |
| Max Travel Speed | 4.7 km (2.9 mph) | 4.5 km (2.8 mph) |
| Swing Speed | 9 RPM | 8.9 RPM |
| Cab Height | 253.0 cm (99.6 in.) | 259.1 cm (102.0 in.) |
| Fuel Capacity | 50.3 l (13.3 gal) | 37.9 l (10.0 gal) |
| Ground Pressure | 29.0 kPa (4.2 psi) | 29.6 kPa (4.3 psi) |
| Displacement | 1496.1 cc (91 cu. in.) | 1640.3 cc (100 cu. in.) |
| Shoe Size | 30.2 cm (11.9 in.) | 30.2 cm (11.9 in.) |
| No of Cylinders | 3 | 3 |
| Max Cutting Height | 490.7 cm (193.2 in.) | 475.5 cm (187.2 in.) |
| Track Gauge | 125.0 cm (49.2 in.) | — |
| Removal Counterweight Clearance | 61.0 cm (24.0 in.) | 57.9 cm (22.8 in.) |
| Emission | — | Tier 4 |
| Max Torque | — | 98.4 Nm (72.6 ft-lbs) |
| Cooling Capacity | — | 4.5 l (1.2 gal) |
| Engine Oil Capacity | — | 6.8 l (1.8 gal) |
| Operating Voltage | — | Operating Voltage 12 V |
| Number of Carrier Rollers per Side | — | 1 |
| Number of Track Rollers per Side | — | 4 |
| Alternator | — | 24 A |
| Torque Power | — | 1440 RPM |
| Drawbar Pull | — | 3.926 kg (8655 lbs) |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.