... Please call us for the detailed parametersFSR300 roots pump|roots air blower Key Features 1, the product line using clover-type ... bearing, gear oil mixed with chassis structural design. Output of air cleaning, dust does not contain any oil. 6, compact ... , motor, pulley, V-belts, pressure gauge, suction silencer (with air filter), bolt, safety valve Fourth, special attachments (configured in accordance ...