حفارة مجنزرة Caterpillar 349F

The Caterpillar 349F is a large hydraulic excavator featuring high efficiency, durability, and comfort. Here's a detailed introduction:
Engine Performance
Model and Power: Equipped with a Cat C13 ACERT engine, delivering 396 net flywheel horsepower (295 kW), a total displacement of 12.5 L, a 130 mm bore, and a 157 mm stroke. It meets US EPA Tier 4 Final emission standards.
Hydraulic System
Flow and Pressure: Maximum main system flow is 770 L/min, maximum swing system flow is 385 L/min, and maximum pilot system flow is 27 L/min. Maximum travel hydraulic circuit pressure is 35,000 kPa, maximum swing hydraulic circuit pressure is 27,500 kPa, and maximum pilot system pressure is 4,120 kPa.
Operating Performance
Operating Weight and Bucket Capacity: Operating weight ranges from 48,650 kg to 53,300 kg. Travel and Swing Performance: Swing speed is 8.7 r/min, maximum travel speed is 4.7 km/h, and maximum traction is 335 kN.
Structure and Dimensions
Track Configuration: With the long fixed chassis, each side has 52 track shoes, 9 track rollers, and 2 carrier rollers.
External Dimensions: Taking the 349F L XE as an example, the cab height is 3.2 m, 3.43 m with overhead guard, track contact length is 4.38 m, track center distance is 2.74 m, transport width (with 900 mm track shoes) is 3.64 m, and tail swing radius is 3.71 m.
Operator Comfort
Noise Control: Operator noise (enclosed cab) is 69 dB (A) according to ISO 6396 standard, providing a relatively quiet working environment for the operator. Maintenance Ease
Low Maintenance Costs: The new generation Cat 349 excavator (compared to the 349F) features long-life filters and lubricants, extending maintenance intervals. The new Cat air filter integrates a pre-cleaner, primary, and secondary filters, offering twice the dust holding capacity of the previous design, reducing maintenance frequency and costs.