Maximum stability with minimum weight for the greatest possible energy efficiency and resource conservation.
We don't simply make parts. We develop customer-focused solutions and complete systems for leading automotive manufacturers worldwide. Our development department consists of experienced engineers and designers who are constantly exploring the limits of feasibility. Thus, we are able to create efficient functional and light-weight components at the highest technical level with great added value for our customers.
Our products combine efficiency, serial and everyday serviceability. Development and construction, tool and mould making, production on state-of-the-art systems and quality assurance—at Joma-Polytec everything is just-in-time and always from a single source "Made in Germany".
Leading automotive manufacturers trust Joma-Polytec in the new development and serial production of innovative, functional parts.
The know-how Joma-Polytec applies in order to develop concepts and turn them into ready to go into production parts is very impressive.
We have been developing vacuum and hydraulic pumps for automotive applications for many years. Combined with our expertise in the design of light-weight components, we are developing customised solutions in the area of media conveyance.
In addition to oil-free and oil-lubricated vacuum pumps, our variable displacement vane pumps and external gear pumps are also found in many engine and gearbox oil circuits.
Thanks to our many years of know-how in the manufacture of hydromechanical components, we achieve extremely high service lives with consistent reliability and performance.
All of our pumps are developed in-house with serial production in mind and are subject to extensive long-term tests during this process.
For example, our pumps can be found in the brake assist area or in the transmissions of vehicles of various automotive manufacturers.
Development examples of vacuum and hydraulic pumps
Transmission oil pump and wheelset pump for cooling and lubrication of gearwheels and axles
For the generation of vacuum
Main gearbox lubrication pump for the supply of the hydraulic circuit
Electrically powered oil pump for the cooling and lubricating of gear drives as well as for routing the hydraulic circuit in the boundary areas
Variable displacement vane pump for the required oil routing of combustion engines
External gear and gerotor pumps for the oil routing of combustion engines and as suction pumps for dry sump engines.
We design and manufacture injection-moulded valves in all standard, high-quality thermoplastics in series.
Our valves fulfill various tasks in oil and water circuits, as well as in the air circulation. Characteristically, the reliability and durability of the valves is consistently high. The resistance to different media and strongly fluctuating temperatures clearly shows the advantages of plastic valves - even over a long period of time.
Specially developed actuators with shape memory alloys make our valves particularly reliable.
By applying Computational Fluid Dynamics (CFD) analysis, we can simulate the behaviour of the components in a realistic manner during the development process and thereby optimally match the application.
For example, our valves can be used as thermal- and pressure control valves in the oil, water circuits and engine air ducts of well-known manufacturers.
Development examples of valve technology
Valves for temperature-dependent control of the oil circuit
To prevent undesirable backflow in the media circuit
Our integrated media conveyance systems are well-established in many vehicles of leading manufacturers.
The combination of different injection moulding processes and subsequent production steps such as assembly (manual, semi-automatic or fully automatic), welding, printing, laser, thermal forming and subsequent component testing, enables us to solve the demanding specifications of our customers.
The use of innovative manufacturing processes, e.g., lost core methods, lets us design components with the most complex geometries. All components are developed by our experienced engineers. Starting with the prototype to the series part. Each part is subject to different flow and strength analyses, mould flow analyses, and a final validation before it goes into series production.
As one of the few suppliers, we routing the complete oil or air circuit for the vehicle’s system. Let us know if you have any questions.
Our light-weight and structural components make a significant contribution to the energy efficiency and resource conservation in many vehicles of well-known automotive manufacturers.
Our goal is to design the ideal part. Each and every time: Maximum stability with minimum weight. At the same time, we develop innovative solutions for durable plastic parts with a compelling design—always at the edge of feasibility. In the process, load-bearing parts are produced with high fibre content or in a material mix with different metals which adds to additional stability .
In addition to sheer weight-saving and stability, our plastic carriers accomplish important functions and are used in many vehicle applications, e.g., thermal management, the reduction of vibrations or emissions.
For example, our light-weight and structural components are used as engine and gearbox carriers in many vehicles of leading automotive manufacturers.
Our services for this area
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