EWELLI MAKERS IN MOTION Profile rail guides - LLT catalogue

4.3.7 Mounting the grease nipple and

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 SKF provided us with the experthem to create...

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 We have a unique understanding of linear equipment and provide key functionality for business critical applications. For the medical industry, we provide precision components how it’s integrated in customers’ applications to provide the best performance and machine efficiency. for use in core medical equipment....

The productivity and economic success of a given applica- tion depends, to a large extent, on the quality of the selected linear components. Often these components determine market acceptance and thus help to obtain a competitive edge for the manufacturer. To do this, the linear components have to be as adaptable as possible to precisely meet the application’s requirements, ideally with standard components. The Ewellix profile rail guide series LLT satisfies these market demands: available in a wide range of sizes, carriages and accessories as well as in various preload and precision classes,...

Just as with rotary bearings, the raceways of profile rail Due to the design-related smaller lever arm, the guides can be arranged in an X- or O-configuration. The X-arrangement provides better self-aligning capability. technical characteristics of these two arrangements are In combination with a two-point contact of the rolling ele- e ssentially the same. Therefore, there are no basic differ- ments, running friction is kept to a minimum. ences in behaviour in the vast majority of load situations, except when they are subjected to moment loads around the This results in a smooth and stick-slip-free...

1.2.1 Components and material specifications Steel balls 3 Square nut 4 End plate 5 Lubricant reservoir 6 Front seal 7 Screw 8 Grease nipple 9 Material specifications 1. Steel, inductive hardened 2. Steel, case hardened 3. Bearing steel 4. Steel, zinc coated 5. POM, reinforced 6. EPU foam 7. PA 6.6 and Elastomer; alternative low friction S0 shield made from PA 6.6 8. Steel 9. Steel, zinc coated

1.2.2 Standard carriage components Seals The ingress of dirt, swarf and liquids, as well as lubricant leakage can significantly reduce the service life of a profile rail guide system. Ewellix LLT profile rail guide carriages are therefore supplied with front, side and inner seals as standard, which can significantly extend service life. while the opposite side is secured by a set screw. The metal thread also en bles the easy and reliable mounting of autoa matic lubricators. Grease nipples are according to standard JIS 1575:2000 (⮑ page 70). If some accessories require longer grease nipples, they...

Improved running performance The LLT profile rail guide has four rows of balls with a 45° contact angle between the rolling elements and raceways. This X-arrangement improves the system’s self-aligning capability. Mounting deviations can be accommodated even under preload, resulting in smooth running performance. Friction is kept to a minimum due to two-point ball contact. This enables reliable, stick-slip-free operation for the life of the rail guide. Modular concept for customized solutions Applications have different speed, precision and environmental requirements. As a result, Ewellix LLT...

1.4 Product range 1.4.1. Product overview LLTHC ... SA Flanged carriage, short length, standard height Further information on page 38 Flanged carriage, standard length, standard height. Further information on page 40 Flanged carriage, extended length, standard height Further information on page 42 LLTHC … R Slim-line carriage, standard length, extended height Further information on page 50 LLTHR profile rail with blind holes Additional information on page 58 LLTHR profile rail with standard holes Additional information on page 56 LLTHR profile rail with protective metal plugs Additional information...

EWELLIX 1.4.2 Preferred rangeCarriagesTable 1 Size Precision class Designation 1) Preload class LLTHC 15 A TO P5 LLTHC 15 SU TO P5 LLTHC 15 U TO P5 LLTHC 15 R TO P5 P3 LLTHC 15 SA TO P3 LLTHC 15 A TO P3 LLTHC 15 SU TO P3 LLTHC 15 U TO P3 LLTHC 15 R TO P3 P5 LLTHC 2O SA TO P5 LLTHC 2O A TO P5 LLTHC 2O LA TO P5 LLTHC 2O SU TO P5 LLTHC 2O U TO P5 LLTHC 2O LR TO P5 P3 LLTHC 2O SA TO P3 LLTHC 2O A TO P3 LLTHC 2O LA TO P5 LLTHC 2O SU TO P3 LLTHC 2O U TO P3 LLTHC 2O LR TO P5 P5 LLTHC 25 SA TO P5 LLTHC 25 A TO P5 LLTHC 25 LA TO P5 LLTHC 25 SU TO P5 LLTHC 25 U TO P5 LLTHC 25 LU TO P5 LLTHC 25 R TO P5...

Profile rail guides - LLT Table 1 Size Precision class Designation 1) Preload class

EWELLIX Rails Table 2 Size Precision class Designation 1) Preload class One-piece-rail Multi-piece-rail LLTHR 15-...P5 A LLTHR 15-...P5 A D4 LLTHR 15-...P3 A LLTHR 15-...P3 A D4 LLTHR 20-...P5 A LLTHR 20-...P5 A D4 LLTHR 20-...P3 A LLTHR 30-...P5 A D6 LLTHR 30-...P3 A LLTHR 30-...P3 A D4

2.1.1 Load rating Definition of the basic dynamic load rating C The basic dynamic load rating C is the radial load, constant in magnitude and direction, which a linear rolling bearing can theoretically accommodate for a basic rating life represented by a travelled distance of 100 km (according to ISO 14728 Part 1). NOTE: As per ISO 14728 Part 1, it is also permissible a refer- ence a distance of 50 km travelled. In this case, a conversion factor of 1,26 should be applied in order to enable proper comparison of the two load rating values. (⮑ formula 1) Verification and validation The load ratings...