Type: Axial piston pump with swash plate design
Displacement: 50 cc/rev (PVK-2B-505), 54 cc/rev (PVK-2B-505-N-4554C)
Maximum pressure: 28 MPa (4,061 psi)
Maximum speed: 3,000 rpm
Direction of rotation: Clockwise (viewed from the shaft end)
Weight: 21.8 kg (48.1 lbs)
Yuchai 50 and 60 are models of diesel engines manufactured by Guangxi Yuchai Machinery Co., Ltd. Here are some general specifications for these engines:
Type: Four-stroke, water-cooled, inline diesel engine
Displacement: 4.3 L (263 cu in) for YC4D60, 4.8 L (292 cu in) for YC4D85
Number of cylinders: 4
Power output: 44 kW (60 hp) at 2,400 rpm for YC4D60, 62 kW (85 hp) at 2,400 rpm for YC4D85
Maximum torque: 265 Nm (195 lb-ft) at 1,500 rpm for YC4D60, 360 Nm (266 lb-ft) at 1,500 rpm for YC4D85
ZX55-1 is a model of hydraulic excavator manufactured by Hitachi Construction Machinery Co., Ltd. Here are some general specifications for this excavator:
Operating weight: 5,230 kg (11,517 lbs)
Engine: Yanmar 4TNV88 diesel engine
Engine power: 28.0 kW (37.5 hp) at 2,400 rpm
Maximum digging depth: 3,930 mm (12 ft 11 in)
Maximum reach: 6,160 mm (20 ft 3 in)
Bucket capacity: 0.14 - 0.24 m³ (0.18 - 0.31 yd³)
