Miniature profile rail guides – LLS catalogue

Ewellix is a global innovator and manufacturer of linear motion and actuation solutions used in assembly automation, medical applications and mobile machinery. Formerly part of SKF Group, the Ewellix Group consists of 16 sales units and eight factories. External net sales are approximately 2.3 SEK billion and we employ around 1200 people. Ewellix is headquartered in Gothenburg, Sweden and is owned by Triton. Technology leadership Global presence and local support Our journey began over 50 years ago as part of the SKF Group, a leading global technology provider, with the world’s first precision...

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 in customers’ applications to provide the best performance and machine efficiency. For the medical industry, we provide precision components for use in core medical equipment....

The demands placed on modern linear guidance technology have risen significantly in recent years - especially in terms of service life, and precise motion combined with high robustness of the product. At the same time, users expect installation and maintenance outlay to be as low as possible. With the new miniature profile rail guide series LLS, Ewellix is exactly targeting the newest industry trends and fulfilling their demands. Their new innovative design couples practical experience gained in several industries with the latest findings from our own research and development. The new range of...

1.2  Function and basic design Miniature profile rail guides are translating rolling motion into linear motion. Like a ball bearing, the rolling elements are allowing nearly frictionless linear movements even under load. For that function a profile rail system consists of two elements; a carriage and a rail. In most applications, the rail is fixed to a ground and the carriage is moving. The carriage contains the rolling elements and a ball recirculation system. The ball recirculation system allows in principal unlimited stroke of the carriage along the rail. Outer ring = Carriage Rolling elements...

4. Ball recirculation 5. Lubricant reservoir 6. End seal Material specifications 1. Profile rail, stainless steel (hardened) 2. Carriage body, stainless steel (hardened) 3. Steel balls, stainless steel (hardened) 4. Ball recirculation, plastic (POM) 5. Lubricant reservoirs, foam 6. End seals or shields, rubber and plastic 7. Mounting screws, stainless steel 8. Ball retention plates, stainless steel 7

Wire retainer in rail groove Safe and robust innovative ball retention The invention of the new ball retention system is setting milestones in terms of the highest safety during the mounting procedure. The ball retention plate is attached to the carriage and is keeping the balls safely in position. Sheet metal ball retention Other designs Ewellix design In comparison to other designs like the wire retention, it does not need an additional groove in the raceways of the rail, which is an entry point for contamination. Up to 20 000 km of service life Carriages and systems of the LLS miniature profile...

Low friction long life seal design With seals made from highly abrasion resistant material, the miniature profile rail is perfectly protected from outside contamination. The seals are designed for the longest life and lowest possible friction force. Even contamination from the carriage bottom side is restricted by the minimal gap seal between the rail and ball retention plate. All in all, it provides safe and long life protection. Secure, safe and quick mounting 2 mounting reference sides at the carriage Do you want to boost your mounting productivity? Then the LLS series is the right choice....

1.5.1  Standard carriages and rails Range with standard rail width for most compact applications, type LLSH, contains two variants of carriage length each in a shielded version with only rolling friction and a sealed version with very low friction. For more technical dimensions and details, please have a look at chapter 3.1. Carriage LLSHC ... TA Standard length - TA Shielded with only rolling friction (no code) Standard length - TA Sealed with very low friction - R Detailed view at shielded carriage Detailed view at sealed carriage Extended length - LA Shielded with only rolling friction (no...

1.5.2  Wide carriages and rails Range with wide rail width for highest performance on one rail solutions, type LLSW contains two variants of carriage length each in a shielded version with only rolling friction and a sealed version with very low friction. For more technical dimensions and details, please have a look at chapter 3.2. Carriage LLSWC ... TA Standard length - TA Shielded with only rolling friction (no code) Standard length - TA Sealed with very low friction - R Detailed view at shielded carriage Detailed view at sealed carriage Extended length - LA Shielded with only rolling friction...

1.5.3  Product size options Standard sizes On the standard range, type LLSH, the size of the rails is defining the size of the miniature profile rails system. Today, the range is available from 7 to 15 mm rail width. Wide sizes The wide range, type LLSW, is defined as the double width of the standard rail with the exception of size 15, which is 42 mm wide. Today, size 15 is available and size 7, 9 and 12 widths will be added to this range in 2022.

On request Ewellix can offer the following customized solutions to make the linear guide fit to the application. Carriage examples • Carriages without standard oil lubrication or carriages with customized lubricant according to specific application needs or specific lubrication holes for central lube systems. • Carriages with hole patterns in the middle section used for rail or other mounting procedures when stroke is extremely short. • Carriages with customized mounting threads to adapt to the design needs of a specific machine. The threads must fit a possible of general design. Rail examples...