BALL RUNNER BLOCK RESIST NRII KWD-020-SLS-C2-H-0

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The Bosch Rexroth B.RUNN. BLOCK NRII KWD-020-SLS-C2-H-0 (R201282304) is a high-precision, corrosion-resistant ball runner block designed for linear motion applications where space is limited in the transverse direction. This model is part of the Ball Rail Systems and is made from Resist NRII material, which is specifically engineered to withstand environments with water-based media, diluted acids, alkali solutions, or high humidity and temperatures. The runner block features a slimline width (SLS format), long length, and standard height, constructed entirely from corrosion-resistant steel as per DIN EN standards. It offers medium preload (class C) for an average level of rigidity and operates with high accuracy (class H). The unit does not include a ball chain or initial lubrication and comes without preservation or attachment elements. With an overall length of 63 mm, this ball runner block can be combined with any SNS Ball Guide Rails regardless of their accuracy class. It supports dynamic load capacities and load moments based on travel lengths as per DIN ISO standards. The Bosch Rexroth design incorporates four rows of balls with point contact to minimize friction across all loading directions. This model boasts several features that enhance its performance: optimized entry zone geometry for increased travel accuracy, reduced frictional oscillations under external loads, and the ability to handle high load ratings in all four main loading directions. Long-term lubrication over several years is achievable through its design, which includes lube fittings with metal threads on all sides. The B.RUNN. BLOCK NRII KWD-020-SLS-C2-H-0 can operate within an ambient temperature range of -10°C to 100°C and has a nominal size of 20 for profiled rail systems. Its design ensures ease of maintenance and interchangeability during servicing while offering various sealing options such as standard SS seals or optional FKM seals for extreme environments. In summary, this Bosch Rexroth ball runner block provides reliable linear guidance in challenging conditions while maintaining precision movement and durability over time.