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Mengulas tentang Spsifikasi Mini Excavator Komatsu PC-50
Banyak dari bagian - bagian Mini Excavator Komatsu PC-50 yang tentunya belum terlalu dimengerti dari sisi Teknik ataupun perhitungan.
Berikut sedikit Spesifikasi Mini Excavator PC-50 :
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| Engine |
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| Model | Komatsu 4D88E-5 |
 |
| Type | emissionised 4-cycle diesel engine |
|
| Displacement | 2 189 cm³ |
|
| Bore × stroke | 88 × 90 mm |
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| No. of cylinders | 4 |
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| Combustion | direct injection |
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| Aspiration | natural |
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| Max. power | 35,4 kW / 47,5 HP @ 3 000 rpm |
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| Net power (SAE J1349) | 29,4 kW / 39,4 HP @ 2 350 rpm |
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| Max torque | 139 Nm @ 1 440 rpm |
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| Cooling system | water |
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| Air filter type | dry |
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| Starting | electric motor with pre-heating air system for cold climate |
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| Operating weight |
| Operating weight with standard bucket, fully serviced, +80 kg operator (ISO 6016). |
| Operating weight with cab and rubber shoes | 4 940 kg |
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| Operating weight with cab and steel shoes | 5 005 kg |
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| Canopy | -175 kg (optional) |
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| Additional counterweight | +250 kg |
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| Hydraulic System |
| The digging equipment is fully controlled by PPC servo-controls. All movements are stopped by lifting the safety levers on the tiltable case. |
| Type | Komatsu CLSS |
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| Main pumps | 2 variable displacement pumps + 1 gear pump |
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| Max. pump flow | 51 × 2 + 32 ltr/min |
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| Max operating pressure: | |
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| Working equipment | 27 MPa (270 bar) |
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| Hydraulic motors: | |
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| Travel | 2 × variable displacement |
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| Swing | 1 × fi xed displacement |
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| Hydraulic cylinders (bore × stroke): | |
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| Boom | 90 × 697 mm |
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| Arm | 85 × 734 mm |
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| Bucket | 75 × 580 mm |
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| Boom swing | 95 × 630 mm |
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| Blade | 110 × 140 mm |
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| Bucket breakout force (ISO 6015) | 3.903 daN (3.980 kg) |
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| Arm crowd force (ISO 6015): | |
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| 1 640 mm arm | 2.471 daN (2.520 kg) |
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| 2 000 mm arm | 2.157 daN (2.200 kg) |
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| Swing System |
| The rotation is operated by means of an orbital hydraulic motor. Single ball-bearing ring with internal, induction hardened toothring. Centralised lubrication of the unit. |
| Swing speed | 9,0 rpm |
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| Transmission |
| Type | 2 speed hydrostatic transmission, controlled and steered by means of two levers and two pedals |
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| Hydraulic motors | 2 × axial pistons |
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| Reduction system | epiclyclic reduction gears |
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| Max. drawbar pull | 4 197 daN (4 280 kgf) |
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| Travel speed | 2,8 - 4,6 km/h |
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| Blade |
| Type | electro-welded, single unit structure |
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| Weidht x Height | 1 960 × 355 mm |
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| Max. lifiting above ground level | 430 mm |
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| Max. lifiting below ground level | 330 mm |
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| Undercarriage |
| Central lower casted X-frame and carriage frame with boxed section. |
| Shoes (each side) | 39 |
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| Track rollers (each side) | 4 |
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| Shoe width | 400 mm |
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| Ground pressure (standard) | 0,29 kg/cm² |
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| Electric System |
| Voltage | 12 V |
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| Battery | 72 Ah |
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| Alternator | 40 A |
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| Starter motor | 2,3 kW |
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| Service capacities |
| Fuel tank | 65 ltr |
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| Radiator and system | 7,3 ltr |
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| Engine oil | 7,4 ltr |
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| Final reduction gears (each side) | 0,8 ltr |
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| Hydraulic system | 55 ltr |
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