2XZ series rotary vane vacuum pump is two stage high speed direct drive rotary vane vacuum pump (in the following called “the pump” for short).It can be used with small volume rotary evaporator, such as RE-201D rotary evaporator, RE-501 rotary evaporator.
Its working principle is the same as the 2X type pump. Rotors are eccentrically mounted within the cylindrical housing of the stators and vanes are fitted freely inside the respective slots of the rotor. When the rotor rotates at high speed, vanes are urged outwards by centrifugal force as well as by spring force so as to keep close contact at their tips with the stator wall throughout rotation.

Thus the inlet port and outlet port on the stator are separated by them. The volume of the space leading to the inlet port expands progressively and periodically with gas filling the space through inlet pipe, meanwhile the volume of the space leading to the outlet port diminishes progressively and periodically to compress the gas previously sucked. By means of gas pressure and oil pressure exhaust valve on the outlet port is opened to expel gas out of the pump through the valve, then vacuum is obtained at the intake side of the pump.

Model		2XZ-0.5	2XZ-1	2XZ-2	2XZ-4	2XZ-8	2XZ-15
Pumping speed (L/S)		0.5	1	2	4	8	15
Ult. vacuum (Pa)	Without gas ballast	≤6×10-2
	With gas ballast	≤6.5	≤1.33
Rotary speed (R/Min)		1400				1410	1410
Motor power (Kw)		0.18	0.25	0.37	0.55	1.1	1.5
Inlet diameter (MM)		Φ16	Φ16	Φ25	Φ25	Φ40	Φ40
Temp. rise of pump oil (℃)		≤40		≤45		≤65	≤70
Oil capacity (L)		0.5	0.55	0.8	0.1	2.5	4.0
Overall dimensions	L (MM)	445	467	488	528	575	703
	W (MM)	130	130	145	145	172	338
	H (MM)	254	254	280	280	350	453
Weight (kg) (with 3-phase motor)		13.5	15	20	23	48.5	77.5
Noise (DB)		≤60
Vibration reference number (U)		≤80