HK Hydraulik-Kontor GmbH

We select the optimum solution with the matching system components for your application.

As a mobile Bosch Rexroth system integrator we develop and advise customized solutions for your entire system from planning, design to commissioning.
 

Our extensive product portfolio
Hydro: Pumps * motors * Valves * cylinder * systems * Transmission * winches
offers us the opportunity to choose the right components.

We offer complete hydraulic and electronic system solutions for machine schematics and BOM creation on VISIO- technology (Auto-CAD compatible). and 3-D drawings on total SOLIDWORKS (Auto-CAD compatible).
 

Mobile applications:

• Construction: Hydro excavators, loaders, graders, rollers, crushers, screens, Paver
• Agriculture: combine harvesters, loaders, chippers
• handling: cranes, concrete mixers, lift equipment, forklifts
• Shipbuilding: winches, deck equipment

We offer a complete hydraulic program for your application

• A as aggregate / power unit or axial piston pump over
• L as load-sensing valve and
• R as radial piston motor or
• W as winch

Configuration

Configuring your hydraulic system and we produce complete hydraulic units or offer the supply of individual system components. On request, we take over the installation of the system in your overall system and support you even after commissioning (after sales service).

Our service / repair departments

We repair many hydraulic components of different manufacturers or supply spare parts for example :

• Axial piston pumps and motors
• Vane pumps and motors radial piston motors

Lager

Our extensive stock offers short delivery times on standard components such as:

• axial piston pumps and motors and parts

• Compact - Mini / Micro – power units / electro pump sets
• Pneumatically driven hydraulic pressure booster units
• gear pumps and motors
• Mobile control blocks as valves in monoblock or sectional construction (ON / OFF, load sensing, with joystick, ....)
• CETOP valves and sandwich plate valves
• vane pumps and spare parts
• Coolers (oil / air, oil / water)
• Pipe cartridge valves (poppet valves, pressure relief valves, control blocks, proportional valves)
• fittings / Special fittings / flanges
• pack accessories like:
  • tanks, filters, couplings, bell housings, valves and expansion joints

Products

• Powerpacks
  • Electro pumps
  • Heypac
  • Micro power packs
  • Mini power packs
  • Special power packs
• Pumps & Motors
  • Axial piston motors
  • Axial piston pumps
  • Gear pumps and motors
  • Orbit motors
  • Radial piston motors
  • Vane pumps
• Tanks and Accesoires
  • Tanks
  • Compensators
  • Hose reels
  • Accesoires
• Gears
  • Gearbox
  • Pump distributor gears
• Valves
  • Industrial valves
  • Mobile valves
  • Block valves
• Winches
  • Hoisting winches
  • Pulling winches
  • Marine winches
• Cooler
  • Oil cooler
  • Water cooler
• Filter
  • Pressure filter
  • Spin on
  • Suction filter
  • Tank filter
• Accumulatoren
• Cylinder

Cylinder

Special hydraulic cylinder

We develop, design, manufacture and special cylinders according to customer customer specifications, specially application in 3D with possible special options:

• Integrated valves and sensors
• screwed-on valve trunnions
• Displacement encoder
• Special coating
• Hydraulically releasing return spring
• Inner latch
• Water cooling
• Purging air
• Bellows as heat protection
• Types: Differential cylinder, plunger, telescopic cylinder, support cylinders, spring cylinders, flat cylinders, flat cylinders with wobbling piston, short-stroke cylinder

Applications: Mining, vehicle construction, impact technology, Press construction, agricultural engineering

Standard cylinder

Hydraulic cylinders according to DIN, CETOP and steelworks standards with different mounting forms:

Hinge eyes, trunnions, flange mounting
 

Hydraulic cylinders in the mining sector

Mobile technology underground

• Loader vehicles
• Robbery machines
• Large hole drill rig
• Ridge anchor drill rig
• Roadheaders
• Sole cutters
• Grader
• Dump truck
• Moving floor
• Vertical loader
• Side tippers

e.g. lifting cylinder, steering cylinder, carriage cylinder, lifting cylinder, tipping cylinder

Hydraulic cylinders in the mining sector

Stationary technology underground

• Exploratory drilling machines
• Crushing plants
• Drill mast

Hydraulic cylinders in the field of mining technology Above ground

• Roll crusher
• Granulate presses
• Sliding cylinder
• Crusher cylinder

Hydraulic cylinders in the cement, ore and coal industries

• Rolls Press

  • Flat cylinder
  • Lifting elements
  • Press-on cylinder
• Vertical mills
  • Spring cylinder
  • Ejector cylinder
  • Swing lift Plunger
• Stacker cylinder
• Boom cylinder
• Gripper cylinder

Spare parts in the cement, ore and coal industry for roller presses and vertical mills

• Flat cylinder

• Ball joint / bearing
• Race ring
• Seal kit / v- seals
• Rotary seals
• Rubber plates
• Bellow with clampring
• Hydraulic components
• accumulator
• Valve blocks / filters

Cylinder repair with optimisation Example press cylinder

Beispiel wiederholt Abstreifer / vorher :
 

Application: 2 plunger cylinders as a unit for the setting of rollers in a granulate press

Problem: Application discussed with the operator, Damage survey of the destroyed cylinder

Cause of failure: single-acting lip seal becomes leaks after a certain time.

The hydraulic oil does not exchange, no oil circulation, The scraper is pressed out of the cylinder by overpressure scraper is pressed out of the cylinder

Solution: The cylinder is equipped with a cover in which the wiper is located

The seal is designed in the plunger downwards as a piston seal

Additional venting and leakage oil borehole these can also be used as flushing holes. used as a flushing hole

After :