SKF Motion Technologies profile rail guides (LM guides) are precise rolling bearings for linear movements suitable for many machines. The profiled guideways consist of rails and carriages (Blocks) with recirculating rolling elements within the carriages (Blocks). They are made for nearly unlimited strokes. Profile rails are available in many designs and sizes, and can be fit to any linear movement. One differentiation is the rolling element: ball or roller and another is the range: miniature, standard and roller standard. The main features are high load carrying capacity using a compact design resulting in high performance rigidity and accuracy. All profile rail guides from SKF Motion Technologies use modular components. Each rail, carriage and / or accessory of the same series and size can be combined.