Marie-Curie-Straße 8 | 51377 Leverkusen

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LF GmbH & Co. KG was founded in March 2016. The current company's goal is to develop, manufacture and market innovative friction materials for industrial clutches and brakes by reducing thermal energy consumption by up to 85%.

In the long term, the production of the brake pads should be CO2- neutral.

The development strategy follows the idea of the foundress to create a liquid phase of the friction material before it hardens. This can adversely affect today's manufacturing concepts where powdered raw materials are mixed, poured or molded, while the latter require significant thermal energy. The founder had this Eureka idea during a dinner discussion about fluid dynamics.

The company can support manufacturing requests for prototypes and pre-series production for its customers with quantities of liquid friction materials ranging from experimental to large.

Panta Rhei - all flows!



Today, the classic friction material structures and materials for clutch- and brake linings are manufactured by homogenizing the mostly powdered raw materials in a mixing process and then pressing them onto a metal carrier on an industrial scale using high pressures and high temperatures. These blanks have to be hardened in a subsequent hardening process and transferred to the specific geometry by means of grinding units. For this purpose, heating and cooling phases are used several times, which make the manufacturing process energy intensive. Due to the necessary shaping processes and pressures, technically complex presses and tools are necessary, which define the manufacturing costs to a considerable extent.

These process conditions have a significant influence on the development times of new products, the manufacturing costs of prototypes, the minimum lot size and thus on the total costs of the clutch linings or other friction technology products. This is where the concept of the LIQFRIC® products comes in and targets in the long term the areas of automotive, industrial, wearables and prototypes. Especially for prototype construction, the product shows excellent starting conditions for disruptive manufacturing approaches due to its free design, as well as the possibility to realize cost advantages of previously unknown size via lot size 1.


Compound: LIQFRIC 1A
Curing agent: LIQFRIC 1B

High Performance

Compound: LIQFRIC HP 1A
Curing agent: LIQFRIC HP 1B

3D-Printer Solution

Compound: LIQFRIC 3D 1A
Curing agent: LIQFRIC 3D 1B

Product concepts

Organic liquid friction products

The already developed organic liquid 2K-LIQFRIC® systems have been repeatedly subjected to friction tests and other tests and are available for customer testing. The required production capacities have been built up and can easily meet the initial requirements. As part of the Eurobrake 2018, the company presented the first organic compounds that have since been sampled to the first interested parties.

Due to the short curing times of the products (pot life approx. 15 min., green-strength achieved after approx. 120 min), the shaping of the products can be completed with a short cycle time. The hardening process can be accelerated sustainably through additional heat usage.

The free form design together with the simplified structure of the casting molds allows a fundamental redesign of the coupling geometry, as well as the production of thin-layer materials in the range of 150 - 1000 µm.

Inorganic liquid friction materials

A water-based compound product family LIQFRIC® HP is in the pre-series evaluation, the temperature resistance of which has been positively tested up to 800°C / 2h. All LIQFRIC® material concepts allow a formulation based on customer requirements, which can be further developed in dialog with the customer specification.

In June 2017, LF GmbH & Co. KG set up a laboratory for the production of compounds and prototypes.

In addition to this, a 3D printing and machining center was opened in spring 2019, so that since mid-2019, we have been able to produce prototypes within 100 hours after receiving a corresponding DXF- or CAD-file and send them to our partner.

An external service provider, who can provide certified tests, was commissioned to test the material concepts.



LF GmbH & Co. KG offers consulting services in the following areas of the friction lining industry and beyond: strategy, leadership, succession planning, R&D or customer-specific topics: 

  • Communication (shop floor -> management) 
  • Value Stream Analysis
  • Dynamic Process Simulation
  • Rapid Plant Assessment
  • Action Implementation Support

Prototyping <100hrs.

  • Fast prototyping for a quick adjustment of the friction materials 
  • New parts possible within 24 hours after the pad has been removed from the mold 
  • Friction level 0,3 ≤ µ ≤ 0,5


For the production of functional test models and small series applications.

Sensors integrated in the pad to record the performance parameters of the brake under operating conditions.

Series production

A production concept with a part-size-dependent annual capacity between 5,000 - 50,000 friction materials was created for prototyping or small series production.

The line - designed as a small series production - is currently under construction and will reach production capability by the end of
Q II/2020.

Areas of application


  • Brake pads
  • Clutch pads
  • Parking brake applications
  • Racing applications
  • Sensor pads (field test, etc.)

LIQFRIC® COMPOUNDS for the production of EPB linings in the casting process (under testing).


Brake pads for passenger cars up to 200 km/h, based on the innovative LIQFRIC® HP COMPOUNDS, are currently undergoing suitability tests.

LIQFRIC® prototypes are currently being tested.

Industrial & Construction

Forklifts, hoists, winches

  • LIQFRIC® COMPOUNDS for the manufacturing of holding brakes for lifting tools (under testing).

Cranes, trucks, excavators

  • LIQFRIC® COMPOUNDS for the manufacturing of holding brakes for lifting tools (under testing).

Sensor technology:

LF GmbH & Co. KG developed in close cooperation with LBF Fraunhofer Gesellschaft an implementation project in the context of medium-sized companies (Mittelstand 4.0) on the subject of sensor technology in friction linings:

  • Counterfeit protection of the products
  • Process control in manufacturing Industry 4.0
  • Quality data storage
  • Condition monitoring after installation
  • Litmus test for the brake (performance)
  • many other applications

Workflow - From the drawing to the finished

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