This document summarizes a wireless sensor solution called Intellys that is designed for predictive maintenance in mining environments. Intellys uses vibration-powered energy harvesting and ultra-low power design to allow perpetual wireless operation of rugged sensors in harsh conditions. This overcomes limitations of wired sensors being damaged and wireless sensors quickly draining batteries. Intellys sensors can reliably generate high sample rate data and are configurable for specific applications. The solution is presented as reducing maintenance costs by up to 70% and downtime by 50% through predictive maintenance of mining equipment.