Universal-Kugellager-Fabrik GmbH

Universal-Kugellager-Fabrik GmbH (UKF) is a German manufacturer of high-precision bearings and spindle technology based in Berlin. According to the company, it was founded in 1932 in Berlin-Charlottenburg and has specialised for over 80 years in quality and high-precision manufacturing. UKF designs and manufactures its products from a single source, using modern standard production equipment and a comprehensive, ISO-certified quality programme. The company's core competence lies in high-precision spindle bearings, which are produced in accuracy classes P5, P4 and the even higher P2 class. UKF emphasises that particularly high accuracies on the inner ring (usually the rotating ring) can be selected with a radial runout according to UKF accuracy HQ of less than 1 µm for bearing bores up to 50 mm, with larger bores available by agreement. Inner and outer ring accuracies are recorded separately to allow application-oriented bearing selection, and for high-precision, tightly tolerated bearing seats, narrow dimensions can be obtained pre-sorted in a spread of 2 to 3 µm. UKF's products are used in a wide range of applications in bearing and spindle technology, including precision turning and precision boring, copy milling, internal and external grinding, and surface grinding. They can be manufactured as hollow spindles for integrating a workpiece holder, as well as in special designs for applications such as burst test benches, measuring spindles for glass processing, or aerospace technology. The company positions itself on the principle that a spindle is no better than its bearing arrangement, and that its high-precision bearings stand out through excellent running characteristics, long-lasting freedom from bearing clearance even without external adjustment, and long life cycles. As a privately held German industrial company, UKF serves customers in Germany and international markets. Its long history, engineering focus and certified quality management underpin its reputation as a specialist supplier of precision bearing solutions rather than a mass-market bearing producer.

Universal-Kugellager-Fabrik GmbH was founded in 1932 in Berlin-Charlottenburg, Germany. From its beginnings, the company focused on the manufacture of bearings and spindle technology, building a reputation for precision work in a demanding industrial field. Over more than eight decades, UKF has specialised in quality and high-precision manufacturing, accumulating extensive experience across a wide range of applications in bearing and spindle technology. The company's development has been closely tied to the evolution of precision machining. Its products have been used in precision turning and precision boring, copy milling, internal and external grinding, and surface grinding. UKF has also developed specialised designs, including hollow spindles for integrating a workpiece holder, and custom solutions such as spindles for burst test benches, measuring spindles for glass processing, and components for aerospace technology. A central element of UKF's history is its commitment to accuracy. The company manufactures high-precision spindle bearings in accuracy classes P5, P4 and the even higher P2 class. It has developed its own UKF accuracy HQ designation, allowing radial runout of less than 1 µm for bearing bores up to 50 mm, with larger bores handled by agreement. UKF records inner and outer ring accuracies separately to support application-oriented bearing selection, and can pre-sort bearings for high-precision, tightly tolerated seats in a spread of 2 to 3 µm. UKF has maintained a comprehensive quality programme and holds ISO certification. Its design and manufacturing operations are integrated under one roof, which the company presents as a key advantage, alongside modern standard production equipment and a continuing commitment to improving products and processes. Today, UKF remains a Berlin-based specialist serving customers in Germany and international markets, with a focus on high-precision bearing and spindle solutions rather than mass production.

• 1932

  Universal-Kugellager-Fabrik GmbH is founded in Berlin-Charlottenburg, Germany.

• Company specialises over more than 80 years in quality and high-precision manufacturing of bearings and spindle technology.

• UKF develops high-precision spindle bearings in accuracy classes P5, P4 and P2, including the UKF accuracy HQ with radial runout < 1 µm for bores up to 50 mm.

Specialist manufacturer of high-precision spindle bearings and bearing technology, emphasising design and manufacturing from one source, ISO-certified quality, and decades of experience.

• High-precision spindle bearings

  Manufactured in accuracy classes P5, P4 and P2, with optional UKF accuracy HQ radial runout < 1 µm for bearing bores up to 50 mm.

• Hollow spindles

  Designed for integrating a workpiece holder.

• Measuring spindles

  Used, for example, in glass processing.

• Special bearing designs

  Custom solutions for applications such as burst test benches and aerospace technology.

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