NOTE July 14, 2025: The LLT version will soon be replaced by the newly modified KLLT series, i.e. With this new KLLT ball profile rail guide from SCHAEFFLER, which is manufactured in Europe, EWELLIX is launching an excellent interchangeable successor that offers you a wide range of advantages:
-Smoother running behavior and reduction of displacement force by up to 50%
-Integrated lubricant reservoirs, pre-lubricated at the factory – ready for immediate use!
-Reduction of lubricant requirements by up to 62%
-Flexible connection options for lubricant adapters
-New patented sealing plug
-Optimized front scraper and sealing concept for longer service intervals
The EWELLIX profile rail guide LLT
The EWELLIX profile rail guide LLT consists of a profile rail with precision-ground raceways and a carriage containing four rows of balls in an X-arrangement. The square configuration of the raceways results in a guiding system that provides an equal load carrying capacity in all four main load directions.
That offers greater design flexibility since all mounting positions are achievable. Moreover, deviations in parallelism and height, which usually occur in multi-axis systems, can be tolerated for more efficiently, resulting in reliable and smooth operation under a variety of operating conditions.
Features and benefits
The EWELLIX profile rail guide LLT provides the customer with the following features and benefits:
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 rail guides use modular components so that cost-effective solutions can be built based on the needs of the application. Various accuracy and preload classes are available to meet different precision and stiffness requirements. Furthermore, a wide range of accessories support the adaptation to specific environmental needs.
Stiffness, strength and accuracy for improved production processes
The four-row arrangement of balls at a 45° angle optimizes load sharing in all four main load directions and is in accordance with ISO 14728. This feature provides a high degree of design flexibility. The ability to accommodate high loads and moment loads makes these rail guides ideal even for single carriage systems.
Longer service life and reduced maintenance
EWELLIX profile rail guide carriages are pre-lubricated at the factory. The integrated lubricant reservoirs, located in the end plates, constantly relubricate the circulating balls. Both ends of the carriage have threaded metal lubrication ports to accommodate an automatic re-lubrication system. As standard, one grease nipple is provided with each carriage.
The fully sealed carriages have double lip seals on both ends as well as side and inner seals. The low-friction seals are highly effective against the ingress of contaminants.
Interchangebility according to DIN 645-1
The main dimensions of EWELLIX profile rail guides are in accordance with ISO 12090-1. This enables dimensional interchangeability with all ISO-compliant brands. EWELLIX 's global sales and distribution network results in availability of replacement parts and serviceability for all systems worldwide.
