Linear Roller Bearings What it does Provides guided linear motion using cylindrical rollers instead of balls, delivering smooth travel with stiffness and repeatable positioning. Designed to carry heavier radial and moment loads than equivalent ballstyle linear bearings, reducing deflection under load and improving system accuracy. Why you need it Improves machine reliability by reducing wear and deformation under heavy or uneven loads. Lowers maintenance and downtime risk through durable rolling elements and predictable performance. Enhances positional accuracy and rigidity for applications where motion precision matters. Key benefits load capacity: rollers distribute load over a larger contact area for better support in demanding applications. Increased stiffness and accuracy: minimizes bending and vibration compared with lowercapacity linear bearings. Smooth, lowfriction motion: rollers maintain consistent contact and reduce stickslip behavior. Durable and long life: built for frequent cycles and continuous operation in industrial environments. Easy integration: compatible with common linear shafts, rails, and carriage systems when matched to proper diameter and mounting style. Important attributes Function: linear guidance for shafts or rails providing constrained, lowfriction motion. Compatibility: designed to work with hardened linear shafts or guide rails of the correct size and tolerance; verify shaft diameter, bearing bore, and mounting style before ordering. Size: available in a range of bore diameters and carriage widths to match application load and space requirements; select based on shaft size and expected load. Material: typically constructed from hardened steel for rollers and raceways; variations may include corrosionresistant finishes or stainless steel in corrosive environments. Performance: optimized for radial loads, good moment load capacity, repeatable positioning, and long service intervals under proper lubrication and alignment. Practical use scenarios CNC machining axis: supports heavy cutting forces while maintaining precise tool path accuracy across repeated cycles. Automated assembly line: carries multiple loads on a linear slide where stiffness and repeatability reduce part placement errors. Packaging or material handling equipment: moves heavy trays or conveyors with minimal deflection and predictable motion under varying loads. Selection and installation tips Match the bearing bore to your shaft diameter and confirm tolerance class for accurate running fit. Check load ratings and life estimates relative to your expected radial and moment loads; consult supplier charts for calculation. Ensure proper alignment and adequate lubrication; misalignment or insufficient lubrication significantly reduces life. Consider environmental factors (contaminants, moisture, temperature) and choose corrosionresistant options or seals if needed. If you need assistance matching a linear roller bearing to a specific shaft size, load condition, or application, provide shaft diameter, load estimates, and operating environment for a precise recommendation.