Sce 50 Wuu Linear Bearing Long Type

Detailed Product Review

The Sce 50 Wuu Linear Bearing Long Type is a motion component specifically designed for applications requiring high precision, rigidity, and stability in industrial automation systems. This linear bearing is developed for a nominal shaft diameter of 50 mm and features an extended bearing structure to minimize dynamic bending, lateral deflection, and vibration issues that can occur on long shaft axes. The long-type configuration is based on the principle that the bearing housing provides a wider contact area along the shaft, thus a longer support distance. This expanded contact surface optimizes the load distribution on the bearing elements, significantly increasing the shaft’s resistance to bending under dynamic loads and thereby maximizing operational stability. This structural advantage is critical for maintaining repeatable positioning accuracy and machining quality, especially in high-speed and high-acceleration motion profiles.

The Sce 50 Wuu series linear bearings are manufactured using high-strength special alloy steel in their housing structure; this material selection ensures the bearing exhibits superior durability and wear resistance against harsh industrial conditions. Four precisely machined bolt holes integrated into the bearing housing guarantee that the bearing is fixed to the machine chassis or mounting surface with extreme robustness and without vibration. This flanged mounting type maintains the system’s structural integrity even under high dynamic loads, minimizes the formation of resonant frequencies, and enhances operational reliability. The long bearing design not only prevents the bending of shaft axes but also reduces the unit load on the bearing elements, extending the system’s overall lifespan and reducing maintenance intervals. Manufactured in accordance with Mermak CNC’s strict engineering standards, this linear bearing offers the reliability and repeatability expected in critical industrial fields such as CNC machining centers, large-scale automation lines, precision handling systems, and robotic applications. Mermak CNC has 16 years of experience, operating from our Ankara Uzay Sanayi factory/warehouse, serving clients in the United Kingdom, United States, Canada, Australia, Ireland, New Zealand, South Africa, and similar international markets.

Axial Rigidity and Positional Accuracy Optimization: The Sce 50 Wuu Linear Bearing Long Type offers a longer bearing dimension compared to standard linear bearings, providing higher resistance against bending moments, especially on long shaft axes. This structural feature allows the shaft to move with minimal deflection even under dynamic loads, significantly increasing the positional accuracy and repeatability of machining heads or handling tables. The long bearing distributes the load over a wider area, reducing stress on the bearing elements and enhancing the system’s overall rigidity, offering a critical advantage in applications requiring micron-level precision.

Vibration Damping with Integrated Flanged Mounting System: Four precisely machined bolt holes integrated into the bearing housing allow the Sce 50 Wuu Linear Bearing to be secured to the mounting surface with high pre-load. This flanged design ensures a much more robust mechanical connection between the bearing and the machine chassis, which effectively helps to dampen vibrations generated during high-speed and high-acceleration movements. A vibration-free operating environment improves machining quality, extends tool life, and maximizes overall system stability, thereby increasing operational reliability. We ensure careful packaging and reliable logistics partners for all shipments.

Advanced Material Science and Optimized Friction Characteristics: This linear bearing is manufactured from high-strength special alloy steel, resistant to industrial conditions; this material selection ensures the bearing exhibits superior resistance to wear, fatigue, and corrosion. The surface hardness and smoothness of the bearing elements, combined with optimized internal geometry, minimize the coefficient of friction. Low friction reduces energy loss, lowers heat generation, and extends the life of the bearing elements. This combination results in lower maintenance requirements and a longer service life, reducing the total cost of ownership and supporting production continuity. Our website stock quantities and prices are up-to-date, and stocked products are prepared from the warehouse without production waiting.

Technical Specifications and Capacity

Technical Frequently Asked Questions (FAQ)

What is the recommended lubrication procedure and period for the Sce 50 Wuu Linear Bearing Long Type?

The Sce 50 Wuu Linear Bearing Long Type requires regular lubrication for optimal performance and longevity. Generally, lithium-based, NLGI class 2 synthetic greases or high-viscosity mineral oils are recommended. The lubrication period varies depending on the degree of contamination in the operating environment, operating temperature, load conditions, and speed of movement. Typically, for light loads and clean environments, a period of 500-1000 operating hours or 3-6 months is recommended, while in heavy load, high-speed, or dirty environments, these periods should be adjusted to be more frequent, such as every 100-250 operating hours or monthly checks. Ensure that the bearing elements and raceways are adequately covered with lubricant through the bearing’s integrated lubrication channels or grease nipples. Applying the correct amount of lubricant, as per the manufacturer’s specifications, is critical, as over-lubrication can also increase friction.

On what engineering principles are the dynamic and static load capacities of this linear bearing determined?

The dynamic load capacity (C) of the Sce 50 Wuu Linear Bearing Long Type is specified as 2500 N, and the static load capacity (Co) is 4500 N. Dynamic load capacity (C) refers to the maximum radial load that the bearing can endure without fatigue failure over a specified life (typically 50 km or 100 km of travel). This value is calculated according to ISO standards, considering the Hertzian contact stresses of the bearing elements and raceways, material fatigue limits, and bearing geometry (number of balls, diameter, contact angle). Static load capacity (Co) represents the maximum load that can be applied without causing permanent deformation (plastic deformation) of the bearing elements or raceways. This value is generally determined based on the maximum allowable permanent deformation of the bearing elements and raceways (e.g., 0.0001 times the bearing element diameter) and indicates the bearing’s resistance to deformation when stationary or moving very slowly. Both capacities are used with safety factors in system design to ensure correct bearing selection.

Why are shaft parallelism and mounting surface flatness critical in the installation of long-type linear bearings?

Shaft parallelism and mounting surface flatness are critically important for the performance of long-type linear bearings, impacting the overall precision and lifespan of the system. Deviations in shaft parallelism cause uneven load distribution on the bearing elements, leading to localized overloading, wear, and premature fatigue failure of specific bearing elements. Similarly, deviations from the flatness tolerance of the mounting surface can cause the bearing housing to bend or twist, which alters the internal bearing clearance, increases friction, and impairs the smoothness of motion. The effect of such geometric errors becomes more pronounced in long-type bearings because the longer contact area can cause even minor deviations to create greater stress concentrations along the bearing. Therefore, precise measurement and correction of the shaft and mounting surface before installation are essential for the bearing to exhibit its nominal performance fully.

How is the performance of the Sce 50 Wuu Linear Bearing affected outside its operating temperature range (-20°C to +80°C)?

The specified operating temperature range for the Sce 50 Wuu Linear Bearing is -20°C to +80°C. Outside this range, the bearing’s performance and lifespan can be negatively affected. At temperatures below -20°C, the viscosity of the grease used within the bearing significantly increases, raising the starting torque and increasing resistance to motion. Extremely low temperatures can also increase the brittleness of the bearing steel, reducing its resistance to shock loads. Conversely, at temperatures above +80°C, the grease viscosity decreases, and the lubricating film thins, increasing the risk of metal-to-metal contact, accelerating wear, and shortening bearing life. Furthermore, high temperatures can cause thermal expansion in the bearing materials, affecting internal clearances and disrupting pre-load and precision settings. Prolonged exposure to high temperatures can lead to grease carbonization or evaporation, causing a complete loss of lubrication properties and bearing failure. Therefore, it is necessary to operate the bearing within the specified temperature range or use special high/low-temperature greases and bearing designs for applications outside this range. The Mermak team follows the shipment process closely.