BALL RUNNER BLOCK ALUMINUM KWD-025-SNS-C1-H-1

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth B.RUNNER BLOCK AL (R163221320) is a high-precision aluminum ball runner block designed for linear motion applications requiring both reduced weight and high accuracy. This particular model falls under the SNS size format, which stands for slimline width, normal length, and standard height. The runner block body is crafted from aluminum, offering a lightweight alternative to steel versions without compromising on precision. This runner block is part of Bosch Rexroth's Ball Rail Systems and features a low preload (Preload class C) and a high accuracy class (H). It does not include a ball chain but comes with initial lubrication and preservation. The grease used is Roller bearing grease Dynalub. Notably, the runner block has no attachment elements on either the left or right front reference edges, but it does have a straight lube connection that is loosely attached. The overall length of this runner block is specified in its technical data, and it boasts an optimized entry zone geometry along with a high number of balls to minimize variation in elastic deflection. Its extracompact design provides less gravity impact due to the use of aluminum. The patented entry zone increases travel accuracy significantly—up to six times—making it ideal for lightweight designs and structures where low tolerances need to be compensated. One of the key features of the B.RUNNER BLOCK AL is its interchangeability; it can be combined with any guide rails within every accuracy class to meet various application requirements. It also supports minimum quantity lubrication with an integrated reservoir for oil lubrication and allows for pinned fitting through predrilled holes on the runner block. Long-term lubrication over several years is possible with this model, ensuring consistent performance over time. Additionally, the product can withstand maximum permissible torsional moments (Mt max), dynamic load capacities (C), and operates within a permissible ambient temperature range as detailed in its specifications. In summary, the Bosch Rexroth B.RUNNER BLOCK AL R163221320 offers maximum precision, excellent dynamic characteristics, long-term reliability in lubrication, and versatile interchangeability options—all packaged in a compact aluminum body suitable for various industrial applications where weight reduction without sacrificing performance is crucial.