Rexroth AA10VSO28DRG 31R‑PKC62N00 Hydraulic Piston Pump Unit

Module Feature

AA10VSO28DRG 31R‑PKC62N00 belongs to Rexroth A10VSO series variable axial piston pump of swash‑plate design for open‑circuit hydrostatic transmission. It provides stepless adjustable output flow by changing swash‑plate angle. Rated working pressure reaches 280 bar with peak pressure up to 350 bar. It features low running noise, fast response of pressure regulator, excellent suction performance and long service life. Widely applied in injection molding machines, metal‑working machinery, press equipment and general industrial hydraulic power stations.

Working principle

Drive shaft rotates the cylinder block with axial pistons. The angle of swash‑plate determines piston stroke and pump displacement. The built‑in DR pressure regulator detects system pressure, automatically adjusts swash‑plate angle to limit maximum system pressure. Output flow varies with swash‑plate inclination, delivering required hydraulic power for actuators under different working conditions. Excess leakage fluid flows out through dedicated drain port.

Onboard components

Drive shaft, cylinder block, piston‑slipper assembly, swash‑plate mechanism, DR pressure regulator valve assembly, pump housing, suction port, pressure outlet port, leakage drain port, shaft oil seal, sealing kit.

LED indicators

No onboard LED indicators. Operating condition is evaluated by external pressure gauge, flow reading and noise‑vibration inspection.

Hardware self‑diagnosis

Monitor system pressure stability, inspect pump housing abnormal noise and vibration, check external leakage at shaft seal and drain port, verify oil contamination level, test suction side for cavitation risk.

Programming software

No configuration software. Pressure setting is mechanically adjusted via regulator screw on pump body.

Electrical & Process Parameters

Model:AA10VSO28DRG 31R‑PKC62N00 Brand:Rexroth Device type:Variable Axial Piston Pump Displacement:28 cm³/rev Nominal pressure:280 bar Max peak pressure:350 bar Circuit type:Open‑circuit hydraulic system Function:Hydraulic power generation, pressure limited variable flow output

Mechanical & Structure

Mounting:Flange foot mounting Protection class:IP65 (pump housing, depends on installation environment) Housing:Cast iron pump housing

Environmental

Operating temperature:-20℃ ~ +80℃ (hydraulic oil temperature) Storage temperature:-30℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:Industrial hydraulic component compliant Status: Rexroth original A10VSO series axial piston pump

Installation

Install pump on rigid base with correct alignment between driving motor shaft and pump shaft. Ensure sufficient suction pipe diameter to avoid cavitation. Connect pressure outlet, drain line and suction pipeline properly. Fill pump housing with hydraulic fluid before initial startup, run under no‑load condition first then gradually apply working pressure. Adjust regulator screw for target system pressure.

Interface

Hydraulic suction port, pressure output port, leakage drain port, mechanical pressure adjustment screw, drive shaft for motor coupling.

Diagnostic

Insufficient output pressure: regulator mis‑adjustment, internal wear of piston assembly or contamination stuck regulator spool. Cavitation noise: insufficient suction pressure, blocked suction filter or too small suction pipe size. External oil leakage: damaged shaft seal or defective gasket. Flow shortage under load: worn piston‑slipper assembly causing high internal leakage.

Product Brief

Rexroth AA10VSO28DRG 31R‑PKC62N00 swash‑plate variable axial piston pump, provides adjustable hydraulic power for open‑circuit industrial hydraulic machinery with pressure‑limiting regulation function.