The SBR45FLL is a high - performance linear guideway from SBC. Its mounting dimensions include H of 60mm, W of 120mm, and L of 179.8mm, which are crucial for accurately planning the installation space. The mounting tap hole features a thread specification of M12, ensuring a reliable connection during installation. For the block, the length L1 measures 133.8mm. The height tolerance (T±) and other structural dimensions such as K, T1 contribute to its stable and precise operation. The width of the rail part (F) is 50mm. The bolt holes have a diameter (d) and depth (h), with a specific spacing (G) designed for seamless assembly. The maximum length of the rail reaches 4000mm, making it suitable for various applications that demand extended linear motion. It has an impressive basic dynamic load rating (C) of 119.5kN, signifying its strong capacity to handle dynamic loads during movement. The basic static load rating (Co) is 242.2kN, ensuring excellent stability when the guideway is stationary. In terms of permissible static moment, the longitudinal torque under static load (Mto) is 3.29kN - m, and under dynamic load (Mt) is 2.44kN - m. The transverse torque under static load (MLO) is 6.67kN - m, and under dynamic load (ML) is 4.95kN - m. The block of this linear guideway has a mass of 4.3kg, and the rail has a mass of 10.7kg per meter, important considerations for overall system design and weight - related calculations.