HK Hydraulik‑Kontor GmbH, a specialist in hydraulic drive technology for mobile and industrial hydraulics, today highlights its comprehensive range of hydraulic cylinder products and services designed to meet the needs of the mining, cement, vehicle construction, press technology and agricultural sectors.
Built around configurable standard cylinders and highly tailored special units, HK’s portfolio supports straightforward replacements and complex new installations alike. Standard cylinders are manufactured to DIN, CETOP and major steelworks standards and are offered with multiple mounting options, including hinge eyes, trunnions and flange mounts for fast integration. For applications requiring bespoke performance, HK develops and produces special cylinders in 3D to customer specifications, incorporating options such as integrated valves and sensors, screwed‑on valve trunnions, displacement encoders, special coatings and water cooling.
“Our aim is to provide customers with cylinder solutions that perform reliably in the harshest environments,” said HK Hydraulik‑Kontor. “By combining standards‑based products with fully engineered special cylinders and a strong service offering, we support operators across the entire equipment lifecycle.”
A versatile product range HK’s special cylinder types cover differential cylinders, plunger and telescopic cylinders, support and spring cylinders, flat cylinders (including wobbling‑piston variants), short‑stroke units and more. Special features offered include hydraulically releasing return springs, inner latches, purge air options and bellows for heat protection. These capabilities enable tailored solutions for precise short travel, heavy lifting and continuous duty in constrained or aggressive operating environments.
Market applications and spare parts support The company serves a broad set of industries. In mining, HK supplies actuators for mobile underground equipment such as loaders, roadheaders, drill rigs, dump trucks and vertical loaders, as well as for stationary machinery including exploratory drilling rigs and crushing plants. For heavy industry, products cover roll presses, granulate presses, vertical mills and other processing equipment, with available spare parts including ball joints, seal kits, rotary seals and bellows.
Repair, optimisation and lifecycle services In addition to new builds, HK provides diagnostic, repair and optimisation services that address root causes and improve long‑term reliability. A documented refurbishment for plunger cylinders used in a granulate press illustrates this approach: HK identified seal failure caused by stagnant oil and overpressure, then redesigned the sealing arrangement, relocated the wiper, and added venting and flushing boreholes to prevent recurrence. The result was a durable, optimised assembly that eliminated repeat failures.
Comprehensive support and inventory HK complements its engineering and repair capabilities with an extensive warehouse of hydraulic components — including pumps, motors, valve blocks, accumulators and filters — enabling rapid response for maintenance and replacement needs. The company’s configuration and service teams work closely with customers to define the right solution and ensure reliable in‑service performance.
About HK Hydraulik‑Kontor GmbH HK Hydraulik‑Kontor GmbH specialises in hydraulic drive technology for mobile and industrial applications. With operational locations in Elmshorn and Unterbreizbach, the company offers a broad portfolio of standard and custom hydraulic cylinders, spare parts, repair and optimisation services, and system components to support demanding duty cycles across multiple sectors.