Repair & Remanufacturing: Hydraulic Pumps

Insurance

Repair & Remanufacturing: Hydraulic Pumps

Comprehensive overhaul and remanufacturing of axial piston, gear and vane pumps from world-leading manufacturers. Full-scale metrological inspection, geometric restoration, OEM parts replacement and bench testing under full load.

Hydraulic Pump Operating Principles

A hydraulic pump is a positive-displacement machine that converts mechanical rotational energy from a prime mover (electric motor or combustion engine) into hydraulic fluid flow energy.

Operating principle: fluid fills expanding displacement chambers (piston bores, gear tooth pockets, vane cavities) during the suction phase and is forcibly discharged into the pressure line during compression. Pressure is generated by the downstream resistance to fluid flow.

Hydraulic pumps are available in the following types:

Axial Piston Pump

Gear Pump

Vane Pump

Radial Piston Pump

Pump Types Serviced

Pump Type

Supported Brands

Remanufacturing Scope

Axial Piston Pumps

Bosch Rexroth, Parker, Hannifin, Danfoss, Sauer-Danfoss, Kawasaki, Linde, Eaton, Caterpillar

Rotary group reconditioning, cylinder block lapping, piston replacement, valve plate match-lapping, swashplate machining and drive shaft / bearing renewal.

Gear Pumps

Bosch Rexroth, Parker, Casappa, Hydac, Marzocchi

Side wear plate reconditioning, bush replacement, gear face precision grinding, shaft resealing and body re-machining.

Vane Pumps

Vickers, Parker, Hannifin, Denison, Hydraulics

Vane cartridge replacement, cam ring resurfacing/renewal, rotor reconditioning and port plate lapping.

Radial Piston Pumps

Hägglunds, Poclain, Hydraulics

Eccentric shaft remanufacturing, plunger and slipper renewal, distributor valve lapping and high-pressure housing testing.

Broad Multi-Brand Service Portfolio:

Complete Pump Remanufacturing Workflow

01 Disassembly and Cleaning

02 Diagnostics and Defect Analysis

03 Machining and Component Restoration

Drive shaft reconditioning — weld cladding of worn journals, splines, and bearing seats, followed by finish turning and cylindrical grinding
Housing line boring — restoring the bore geometry of bearing seats and seal cavities
Bushing fabrication — precision turning on CNC lathes
Port plate / valve plate reconditioning — precision grinding and lapping
Custom hardware fabrication — CNC machining of pins, drive keys, and other custom components

04 Component Replacement

Bearings
Rotary group (cylinder block, pistons, springs)
Valve plates / port plates
Valves
Radial shaft seals (oil seals)
Hydraulic lip seals / U-cup seals
O-rings
Bushings
Gears (for gear pumps)
Vanes (for vane pumps)
Drive shafts (if reconditioning is not feasible)

05 Assembly and Calibration

06 Test Bench Validation

Determination of pump operating efficiency (volumetric and hydromechanical)
Measurement of operating pressure, flow delivery, and fluid temperature
Inspection for external/internal leakage and abnormal acoustic emissions (noise/vibration)
Issuance of a test certificate (equipment data sheet) with actual measured performance parameters

Core Advantages of PROMGIDROPRYVOD Pump Service

01

Official Bosch Rexroth Service Partner

Direct access to OEM technical factory tolerances, genuine spares and proprietary tooling.

02

Comprehensive In-House Tooling

Turning, 5-axis milling, surface and cylindrical grinding and automated cladding under one roof.

03

Heavy Dynamic Test Stands

Every pump is certified on dynamic test rigs up to 500 bar with real-time digital parameter logging.

04

Warranty

Warranty on remanufactured assemblies and replacement components.

Repairs Engineered with Genuine OEM Components

Authorized Service Partner. Direct supply of genuine OEM spare parts, including cylinder blocks, piston rotating groups, and valve plates.

We utilize specialized filtration units during flushing and functional testing to guarantee oil purity and compliance with cleanliness codes.

All test benches are equipped with high-efficiency filters and replacement elements to safeguard hydraulic circuits during load testing.

Frequently Asked Questions

How quickly do you repair hydraulic pumps?

The standard turnaround time is from 5 business days, depending on the complexity of the job and parts availability.

What documentation do you provide after the repair?

The standard turnaround time is from 5 business days, depending on the complexity of the job and parts availability.

What if the pump is discontinued and spare parts are no longer available?

The standard turnaround time is from 5 business days, depending on the complexity of the job and parts availability.

Do you manufacture custom parts in-house for hydraulic pump repairs?

The standard turnaround time is from 5 business days, depending on the complexity of the job and parts availability.

Request Hydraulic Pump Repair Now

Attach a photo of the pump, an image of the nameplate (data plate) or describe the malfunction. Our specialist will contact you to clarify the technical details and calculate the repair estimate.

Repair & Remanufacturing: Hydraulic Pumps

Insurance