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An industry first and only product is the line of spindles with built in inverters.  These spindles are available from .07hp to 3hp and speeds up to 24,000rpm.  Only requiring a 220 3phase input line these spindles are pure plug and play.  Speed can either be controlled through the controls of your existing machine or via a potentiometer built right into the spindle.  This is an excellent spindle to replace your existing Porter Cable router motor with a durable, reliable, industrial strength product for ease of operation and a long precision life.