ZX270-3 is a model of hydraulic excavator manufactured by Hitachi Construction Machinery Co., Ltd. Here are some general specifications for this excavator:
Operating weight: 27,200 kg (60,000 lbs)
Engine: Isuzu AH-6UZ1X diesel engine
Engine power: 161 kW (216 hp) at 1,950 rpm
Maximum digging depth: 6,660 mm (21 ft 10 in)
Maximum reach: 9,920 mm (32 ft 6 in)
Bucket capacity: 1.1 - 1.6 m³ (1.44 - 2.09 yd³)
4628664 and 4629348 are part numbers for hydraulic pump parts used in the ZX270-3 excavator. These parts are manufactured by Hitachi Construction Machinery Co., Ltd.