HiCo Hartmann & Co. KG
Römerweg 12

D-78727 Oberndorf-Hochmössingen

Opening Hours:
Mon–Thu: 7:00 AM – 4:00 PM
Fri: 7:00 AM – 2:00 PM

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Products and Services at HiCo Hartmann

Our Products

Centering Vise

Centering vises are among HiCo Hartmann’s core solutions. The company offers both standard centering vises with customer-specific accessories and custom versions for special applications. These include, for example, base jaws for interchangeable, diameter-specific jaws, oil supply through the base surface, position monitoring under protective covers, and additional accessories such as height-adjustable support rests, travel measuring systems, or central lubrication connections. Hydraulic centering vises with height adjustment, high clamping forces, and use in machining centers are also part of the product range. In this way, HiCo Hartmann creates solutions for precise, safe, and process-oriented clamping.

Customer-Specific Clamping Fixtures

HiCo Hartmann develops custom clamping fixtures for a wide range of workpieces and machining tasks. The company designs and manufactures solutions for passenger car crankshafts, truck rear axles, trailer hitches, double pump housings, and railway axles, among others. These solutions include, for example, double clamping fixtures with pre-loading stations, radial and axial alignment using centering vises, hydraulically actuated stops, adjustable elements, and interchangeable parts for different sizes. HiCo Hartmann precisely adapts each solution to the workpiece, process, and application, creating clamping fixtures that operate safely and prove themselves in practical use.

Floating Clamping

Floating clamping solutions are also part of HiCo Hartmann’s product range. The company designs and manufactures floating clamping fixtures for pistons used in passenger cars, trucks, and combined heat and power units, for example. HiCo Hartmann aligns the workpiece using a piston-specific locating mandrel with spring-loaded elements that adapt to the internal contour. First, the piston is positioned in a floating manner with low pressure; it is then clamped with high pressure. A hold-down device and a multi quick coupling for pallet-changing machines complete the fixture. In this way, HiCo Hartmann precisely adapts its clamping technology to specific machining steps and demanding manufacturing processes.

Clamping Fixtures for Test Benches

HiCo Hartmann also offers centric clamping fixtures for test benches. The company develops clamping fixtures for pump test benches, enabling hydraulic pumps and hydraulic motors to be securely clamped. Alignment is carried out centrically on the flange. For series-production test benches, HiCo Hartmann uses hydraulic clamping; for repair test benches, manual bolting is used. Solutions are available for flange diameters of up to 600 mm, pump weights of up to 1,000 kg, and drive torques of up to 5,000 Nm. In addition, HiCo Hartmann realizes further designs by arrangement, demonstrating technical flexibility in this area as well.

Our Work

Steuerung unseres modernen Hydraulikprüfstandes für 4 Spannkreise mit Druckvorwahl, Dauertest und Dichtheitsprüfung

Control of our modern hydraulic test bench for 4 clamping circuits with pressure preselection, endurance testing, and leak testing.

Bearbeitung an unterschiedlichen Modellen. Z.B. Gewinde für Schalldämpfer oder Befestigungsmöglichkeiten für Picatinny-Schienen und Montagen ng 5

Work on a wide variety of models.

For example: threads for silencers or mounting options for Picatinny rails and mounts.

Picatinny Schienen und Montagen für fast alle Modelle

Picatinny rails and mounts for almost all models

Diverse Montagewerkzeuge z.B. HK MR 223, HK MR 308, AR15, G36, Weitere auf Anfrage

Various Assembly Tools

For example, HK MR 223, HK MR 3058, AR-15, G36
More available upon request.

Our Services

What We Offer You

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Repair of Our Own Products

Repair of Our Own Products

HiCo Hartmann repairs its own products and helps you continue to rely on proven clamping technology. This ensures that existing solutions are professionally maintained.

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Repair of third-party products

Repair of third-party products

We can also repair third-party products. HiCo Hartmann is here to assist you when existing clamping systems need to be inspected, refurbished, and restored to working order.

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Third-party products custom-built to customer specifications

Third-party products custom-built to customer specifications

Upon request, HiCo Hartmann can rebuild third-party products to meet customer specifications. This allows for customized solutions when existing designs need to be modified or reengineered.

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Upon request

Upon request

Many services are tailored specifically to the task at hand. Upon request, HiCo Hartmann will assess which technical solution best suits your application and requirements.

A Brief Overview