Ametek Lamb 116883-50 5.7" 2 Stage Thru Flow Ball Sleeve Vacuum Motor #116883-00The Ametek Lamb 116883 50 is a 5. 7" two stage thru flow vacuum motor featuring a ball sleeve bearing configuration a proven design built to handle continuous duty suction demands. Two stage thru flow design delivers strong, sustained airflow performance across a range of vacuum applications Ball sleeve bearing construction balances durability and smooth operation for extended motor life 5. 7" motor diameter verify fitment against your machine's motor