Linear Roller Bearings What it does and why you need it Provides reliable, lowfriction linear motion by guiding cylindrical rollers along a shaft or rail. Designed to carry higher radial and moment loads than plain linear bearings, improving system stiffness and positional accuracy. Reduces wear and maintenance needs so machines run longer between service intervals. Key benefits Higher load capacity: Rollers distribute load across a larger contact area for better support in heavyduty applications. Improved stiffness and accuracy: Minimizes deflection under load for reliable positioning. Smooth, consistent motion: Lower friction and predictable performance lead to better cycletocycle repeatability. Reduced downtime: Durable construction and simple lubrication options extend service life. Important attributes Function: Converts rotary motion into controlled linear motion and supports radial and combined loads along a shaft or rail. Compatibility: Works with standard hardened round shafts or compatible linear rails; available in configurations for different shaft diameters and mounting arrangements. Size and fit: Offered in a range of bore and outer dimensions to match common shaft sizes and machine envelopes. Check shaft tolerance and bearing bore for a proper press or slip fit. Materials and construction: Typically manufactured from hardened alloy steel or corrosionresistant variants; rollers and raceways engineered for load distribution and wear resistance. Performance: Optimized for load capacity, stiffness, and long operating life; lubrication options available to suit speed and environment. Installation and maintenance Install on accurately aligned, hardened shafts or rails to maximize life and accuracy. Use recommended lubrication (grease or oil) and interval checks for performance. Inspect rollers and raceways periodically for wear or contamination, especially in dusty or wet environments. Typical applications CNC machines and machine tools where rigid, accurate linear motion is required. Automated assembly and materialhandling systems that carry heavy workpieces or require repeatable positioning. Packaging, printing, and conveyor equipment where durability and low maintenance reduce operating costs. Selection tips Match bearing bore to shaft hardness and tolerance; confirm load direction and magnitude before choosing a series. Specify corrosionresistant materials and seals for humid or corrosive environments. Consult shaft alignment and mounting guidelines to preserve bearing life and performance.