Dynemech Machine Base Mounts - Series SLM Dynemech Machine Base Mounts, SLM Series Anti Vibration Mounts having square/rectangular base, developed in cast iron body allow anchor-free machinery installations. Type RA - The bolt can rotate on its axis and provides simple levelling with a great levelling range. The levelling is done by rotating the hex provided at the base of the bolt just above the mount body. Machine base must have a tapped hole. One free nut and washer is provided for clamping after the levelling is completed.