oem CAT349 CAT352 Hydraulic Main Pump 566-8632 5668632 569-8251 5698251 349GC 345GC Piston Pump

Displacement: ~280 cm³/rev (17.09 in³/rev) – optimized for high flow at operating speeds.

Flow Rate:

Maximum: 770–780 L/min (203–206 GPM) at 2,000 RPM, matching the 349/352’s hydraulic circuit demands.

Pressure Ratings:

Operating Pressure: 350 bar (5,076 psi) (main implement circuit).

Peak Pressure: 420 bar (6,091 psi) for short-term heavy loads (e.g., travel, lifting).

Speed:

Maximum Input Speed: 2,000–2,300 RPM (synchronized with excavator engine speed).

Torque:

Maximum Input Torque: ~2,800–3,200 N·m (handles high-pressure operations without performance loss).