The gear partner for world market leaders

Koellmann Gear

The Thielenhaus Group

We are your technology partner for machines and industrial applications

The Thielenhaus Technologies Group specialises in the production of high-quality machines and equipment for industrial applications.

Standard for highest quality

Since 1904, Koellmann Gear has stood for quality products with the highest standards. As a division of Thielenhaus Technologies GmbH, we combine cutting-edge innovations with our many years of experience in producing gears. In order to better serve our customers, we have consistently set the highest quality standards when it comes to the wide array of Koellmann gears in use around the globe.

You define the specific task and we develop a tailor-made gear solution. In doing so, we draw on a wide-ranging wealth of experience from realized industrial gear units for a wide variety of industries, which has grown over decades.


UNEX is an extruder gear series with 18 sizes and more than 500 variants. The design is adapted to the individual customer requirements.

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Injection moulding machine gears in the I-TEC series are customised solutions made of high-quality components specifically developed for use in this application area.

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With its H-TEC series, Koellmann Gear developed a universal gear series that is aimed specifically at a wide array of industrial processes.

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Test bench gears are individually developed for testing components under operating conditions

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The SG 500 saw-blade gear was specifically designed for fully-automatic sawing machines and is impressive due to its quiet running and precise saw cuts.

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Shredding machine gears are robust and designed to have a high degree of efficiency in order to meet the special requirements for use in shredding machines.

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A total of nine outputs on the two-row straightening machine gear drive rollers, over which sheet metal parts are fed into the machine and straightened.

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The powerful and high-torque mixer gear EWG 320 is specifically designed for heavy industrial applications.

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With its gears in the DSL 720 series, Koellmann Gear developed a double worm gear unit for oil presses, which are specifically designed for the requirements of the food industry.

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The modular design of Koellmann gears means that the design and manufacturing of special gears can be adapted to customer requirements.

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Intro Services

Efficient customer service. Worldwide.

A high level of resource availability is the decisive factor for every plant operator. In the event of damage, help must be available quickly. Therefore, all matters relating to the service at Koellmann Gear are given a high priority. Our special strengths include comprehensive customer service for gears, which includes regular maintenance as well as quick assistance

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To make it possible to plan downtimes, we provide our customers with the option of recording the condition of the gear by means of an inspection. As such, we determine the frequency spectrum during operation by means of vibration analyses and the sound power level by means of noise measurements, whereby it is possible to draw initial conclusions about the status of the mounting and the gearing. Further insights can be achieved by using a thermal imaging camera.

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Maintenance should be performed on a gear unit by our service personnel at regular intervals. This ensures the longest possible service life and low wear on the serviced gears. This also includes compliance with the oil change intervals stated on the nameplate.

Professional maintenance is an integral part of our warranty. Within the context of maintenance, the general condition of the gear is initially assessed. Depending on the findings, the way in which to proceed will be coordinated

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Retrofitting / modification

A gear is often in use for decades, whereby the performance potential demanded of it frequently changes over the course of its service life. An increase or change in the performance parameters does not necessarily mean that the gear must be replaced by a larger gear as the drive unit can often be cost-effectively supplemented by retrofitting or upgrading.

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Our experienced service team is at your disposal on short notice to perform a damage survey, and to assess and analyse the possible causes of the damage in the very rare event that a gear fails.

Once the external condition has been assessed, the shut-down gear is professionally opened and disassembled. The gear must be sent to Koellmann Gear

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Spare parts

As a special gear manufacturer offering a wide range of gears, it is simply not possible for us to stock all of the spare parts needed for our special solutions.

Standard components are available with just-in-time delivery. In the case of customised replacement parts, these parts are produced by suppliers who are affiliated with the partnership

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Subcontracting with Koellmann quality

Use our machine pool for your competitive advantage

Machining centres are needed for machining large and heavy workpieces, however investing in such a centre does not always pay off for every operation. For these situations, Koellmann Gear offers the option of having larger individual workpieces or even small series machined on modern machines by highly qualified specialists.

Subcontracting with Koellmann Gear

We successfully combine years of knowledge regarding precision with our manufacturing techniques, meaning our work is of the highest quality level. As a medium-sized company, we are constantly pursuing the goal of delivering perfect work on time and within reasonable cost structures. As such, all of our experience is at your disposal, and we are available to serve as a competent and flexible partner. We treat all customer data and documents as confidential and they are subject to the strictest non-disclosure requirements.

Koellmann Gear
Schwesterstraße 50
42285 Wuppertal

Tel: +49 202 / 481 - 0
E-Mail: +49 202 / 481 - 296

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