Linear bearings, units and shafts catalogue

Heritage of innovation for technology leadership Ewellix is a global innovator and manufacturer of linear motion and actuation solutions. Today, our state-of-the-art linear solutions are designed to increase machine performance, maximise uptime, reduce maintenance, improve safety and save energy. Technology leadership Global presence and local support Our journey began over 50 years ago as part of the SKF With our global presence, we are uniquely positioned to tise to continuously develop new technologies and use solutions, with full technical and applications support Group, and our history with...

Trusted engineering expertise Our industry is in motion; pushing towards solutions that reduce environmental impact and leverage new technology. We provide technical and manufacturing expertise to overcome our customers’ challenges. We work in a wide range of industries, where our solutions provide key functionality for business critical applications. We have a unique understanding of linear equipment and how it’s integrated into customers’ applications to provide the best performance and machine efficiency. For the medical industry, we provide precision components for use in core medical equipment....

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The Ewellix linear ball bearing assortment is widely used in a variety of economic and easy to implement linear guide systems. Nearly every application can be realised by the use of different bearing sizes and the huge range of units together with shafts and shaft blocks. The flexibility in combinations of the assortment makes it easy to find the right linear guide solution to support productivity. With this highly standardised range, implementation is quick as most components are available from stock. 1.1.1  Product function Linear ball bearings are translating rolling motion into linear motion....

Linear bearings and units 1.1.2  Design and materials Linear ball bearings from Ewellix are designed for unlimited stroke applications. They consist of a plastic cage that contains the guiding elements, which are raceway plates and balls. Depending on the range and the size, linear bearings have different numbers of ball recirculations. Under the raceway plates, the steel balls are in the loaded zone. At the end of the raceway, the balls move into the unloaded zone and get circulated via the recirculation cap. When passing the opposite recirculation cap, they are moving back into the loaded zone....

Linear bearing range Two different ranges are available, the compact one and the standard one, where both are using the same shaft dimensions. The compact one has a shorter length and diameter for best fit into applications with limited space. The compact range is in line with ISO 10285, series 1. The standard one is optimised for higher load rating using more space. It also includes the open design bearings for supported shaft solutions and is in line with ISO 10285, series 3. For the open types, a specific sub-series is made for heavy loads. For applications where a linear ball bearing is not...

Linear bearings and units Linear unit range To build up linear slides from standard design elements, each range has an assortment of units and shaft blocks. A linear bearing unit is a standardised housing mostly made from aluminium already equipped with a linear ball bearing. The units have a defined performance and are made as single, tandem, duo or quadro units. These units provide the utmost ease and flexibility to build up a huge variety of linear slides, together with the shafts and shafts blocks. The schematics below show the differences between the unit assortment. Single units Single...

Shaft blocks and shaft supports When the shaft fixation cannot be integrated into the machine design, the easiest way to do it is with Ewellix compact and standard shaft blocks or shaft supports. Shaft blocks are made to secure a safe clamping of the shaft and to have a defined precise fixation at the machine surface. Shaft supports are normally used at long linear travel distances to have a precise shaft fixation and to avoid shaft bending at long lengths. Shaft supports are bolted with the shaft. For more information, see chapter 3.6. Shaft with shaft blocks Shaft with shaft support Precision...

Linear bearings and units 1.2  Features and benefits 1.2.1  Compact range High performance bearings Compact linear ball bearings are high performance bearings for long rating life with nearly no maintenance. The cage design with raceway plates optimises load distribution between ball rows. The bearing’s design which provides low friction and low noise, paired with high load ratings, is useful in many applications. Each bearing size has a maximum load direction, when mounted as shown in the picture to the right, which boosts performance. Raceway plates LBBR compact bearings are optionally equipped...

Miniaturisation down to size 3 mm Downsizing and miniaturisation are trends in the market to realise lower energy consumption in motion or new miniature solutions. Compact linear ball bearings are supporting these trends by the sizes Ewellix offers in the market. From size 3 mm up to 50 mm onwards, customers can choose the right bearing size for their applications. Additionally, the ease of linear ball bearing integration into machine designs counts. Complete unit range Standard applications need quick solutions where everything is predefined. The complete unit range makes it easy to pick the...

Linear bearings and units Larger steel balls Optimised raceway plates Higher load ratings and rating life Depending on the bearing size, LBC D-series linear ball bearings can deliver up to 15 % higher dynamic load ratings and up to 50 % longer rating life than previous bearing designs. Optimised raceway plates and larger rolling elements enable the performance increase. Consequently, LBC D-series bearings offer greater reliability and productivity for applications or give designers the flexibility to downsize. Main load direction Returning zone Load zone Cage Self-aligning capability Standard...