REXROTH R901230033 PGZ4-1X/050RT07VU2

GEROTOR PUMP PGZ4-1X/050RT07VU2

R901230033  Manufacturer: Bosch Rexroth

Gerotor pump, fixed displacement volume

Component series 1X

Maximum operating pressure 15 bar

Maximum displacement 140 cm³

for cooling or filter circuits

Features

– Low-pressure pump with fixed displacement

– Very low operating noise

– Suitable for wide viscosity and speed ranges

– Very good suction behavior

– Flexible combination possibilities with Rexroth axial piston, internal gear and vane pumps

– Use: For cooling, filtration or lubrication circuits at low pressures in industrial or mobile applications, e.g. plastics processing machines, machine tools, presses and wind turbines

Function, section

Construction

Hydraulic pumps of the PGZ type are gerotor pumps with fixed displacement.

They mainly consist of: Flange housing (1), shaft (2), the displacer elements inner rotor (3) and outer rotor (4), as well as driving disk (5) and cover (6).

Suction and displacement procedure

Via the driving disk the shaft drives the inner rotor in the direction of rotation shown. The inner rotor meshes with the outer rotor and causes the same to rotate as well.

The tooth clearances opening in the suction area (S) prime the hydraulic fluid. The suction and pressure area are separated on the opposite side of the meshing area (Z) by a radial gap (R) created by the tooth profile of the outer and the inner rotor sliding against each other.

Within the pressure area (P) the hydraulic fluid is pumped into the pressure port as the chambers become.

Properties

The gearing with cycloid contour is characterized by a large meshing length. Filling zone and displacement area cover a large rotation angle. This results in low flow pulsation and thus very low operating noise.

The shaft and the displacer are supported by a slide bearing and work in a wear-free manner when used as intended.

Gerotor pumps PGZ are self-priming.

Materials used

Flange housing (1): Aluminum Shaft (2), inner rotor (3), outer rotor (4), and driving disk (5): Steel

Cover (6): Cast iron