Injection-molding technology

Our many years of expertise in tool and mold making form the basis for the manufacturing of highly complex plastic and hybrid parts, with sophisticated geometries and the smallest of dimensions. We meet the demand for challenging composites made from metal and plastic with maximum flexibility and the highest level of consulting expertise. Together, we take into account factors such as quantities, time to market, and costs and complexity of parts in order to develop the best possible solutions.

Highly modern machinery

equipped with state-of-the-art, multi-award-winning production lines for fully automated value creation

Fast reaction times & optimized processes

for series manufacturing with maximum productivity – thanks to short lines of communication under a single roof

International structures

enable individual manufacturing solutions from a single source – appropriate to batch size and complexity requirements

Maximum quality & accuracy

thanks to continuous process monitoring via integrated camera inspection and quality assurance

Plastic-metal composites

New material combinations and innovative product solutions from our customers result in a steady stream of new application areas for hybrid parts. As a specialist for stamped parts and plastic parts, we unite both areas of expertise under a single roof. With our expertise in design, tool/mold making, and plastic processing, we ensure that all our manufacturing procedures are inherently coordinated and optimally aligned to one another. Throughout any project – from the design phase through to series production – we advise and support our customers to develop the ideal solution with regard to quality and cost efficiency.

Our material diversity

Through the processing of high-performance plastics (e.g., LCP, PPA, PPS), we can work in a very high temperature range without affecting the material or the mechanical characteristics of the insert part. This temperature resistance makes these materials particularly suitable for use in electric or electronic components. The high level of chemical resistance also allows for a variety of application possibilities in practically every branch of industry. Depending on the requirements, we make use of technical plastics that are resistant to high temperatures, reinforced with glass fibers, stabilized through hydrolysis, or are flame-retardant.

Single and multi-component injection molding

We can implement both single- and multi-component injection molding processes. The combination of several types of plastic in one component allows us to combine different material properties specifically according to the requirements of our customers. With semi- or fully automated processes tailored to the number of units, we reduce assembly time to achieve cost savings and greater production efficiency.

Plastic-metal composites.
A decisive step forward.

The desire to maximally automate manufacturing processes to reduce production costs and increase efficiency often conflicts with demands in terms of flexibility, complexity, and implementation time. Through our international corporate structures, we offer fully automated, semi-automated, or manual production concepts in injection-molding technology, which in turn allows us to implement our customer products on an individual basis – optimally coordinated to the requirements and framework conditions of the respective project.

Our technical portfolio is rounded off by the subsequent processing of high-precision stamped parts by means of overmolding and the integration of further complex work steps for the manufacturing of assemblies. Depending on the product requirements, different manufacturing procedures and degrees of automation can be used:

Insert technology

One of our key areas of expertise lies in the production of composites made from stamped metal insert parts and plastic. Depending on the quantity and complexity, the inserts can be inserted manually, semi-automated, or fully automated. Our range of inserts extends from filigree contacting systems and contacts through to large metal inserts.

When it comes to manufacturing safety-relevant sensor housings for the automotive industry or medical housings and components, there can be no compromises with regard to process reliability. We use award-winning production systems with integrated quality inspections that have been recognized by the plastics industry to satisfy our customers’ highest expectations.



The supply and overmolding of insert parts on a strip offers the highest productivity of all automated manufacturing variants for hybrid components. In addition to the overmolding of stamped strips, the production line for this technology can be seamlessly expanded to include multiple additional production steps. Examples of such steps include resistance welding processes for the integration of electronic components, servo presses with bending tools, and camera inspection systems for 100% monitoring, or even laser marking with Data Matrix codes.


In the reel-to-piece manufacturing variation, the individual parts are separated from the stamped and overmolded endless strips and packaged in the last step, in contrast to the reel-to-reel procedure.

These hybrid parts are often used in the field of mobility or in sensor systems. Depending on the individual requirements in terms of cleanliness or for subsequent processing, the parts can then be packaged individually or procured as bulk goods from our customers.


finishing processes

In our follow-up processes, we perform finishing procedures for our products in a targeted fashion along the value chain, thereby honoring our commitment to quality down to the smallest detail.

Product groups at a glance


Press-Fit Pins





Tool components


Tool Components



Press-Fit Pins



Quality at Kramski

“Perfection” is a word that gets used a lot. But it only gets interesting when it becomes measurable. Our quality management processes ensure that all our services are carried out to the highest level of quality.