BALL RUNNER BLOCK RESIST NRII KWD-020-SLS-C1-H-0

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The Bosch Rexroth B.RUNN. BLOCK NRII KWD-020-SLS-C1-H-0 (R201281304) is a high-precision ball runner block designed for linear motion applications where space is limited in the transverse direction. This runner block is made from Resist NRII, a corrosion-resistant steel that meets DIN standards, ensuring durability and longevity even in harsh environments. The product features a slimline width (SLS format), long length, and standard height, with an overall length of 70 mm. Engineered for low preload (Preload class C) and high accuracy (Accuracy class H), this ball runner block operates without a ball chain, initial lubrication, or preservation, allowing for straightforward integration into various systems. It does not include attachment elements at either front reference edge but does have a straight lube connection that comes loosely attached. The B.RUNN. BLOCK NRII boasts compatibility with all SNS ball guide rails and can be interchanged with other rails of varying accuracy levels. Its patented entry zone significantly enhances travel accuracy by up to six times and minimizes frictional oscillations, especially under external loads. The optimized entry-zone geometry paired with a high number of balls reduces variation in elastic deflection. This runner block can handle dynamic load capacities efficiently as per DIN ISO standards and supports long-term or minimum quantity lubrication systems for oil lubrication. Attachments can be mounted from above due to the design of the runner block body. Key specifications include a permissible ambient temperature range from -10°C to +100°C, dynamic load capacity C, static longitudinal moment load capacity ML, and dynamic torsional moment load capacity Mt—all critical factors for determining the runner block's suitability for specific applications. Additionally, it offers self-aligning capabilities to compensate for misalignments without requiring self-alignment mechanisms. The Bosch Rexroth B.RUNN. BLOCK NRII KWD-020-SLS-C1-H-0 is ideal for use in profiled rail systems across various sizes (A, B, E, H, K, N, S) and provides exceptional performance with its corrosion-resistant construction and precision-engineering—making it an essential component for demanding linear motion tasks.