Zj-70 Roots Vacuum Pump

Zj-70 Roots Vacuum Pump

Pump description:  

Model ZJ CZPT Booster Pump, also identified as a Roots pump, is a volumetric pump.It employs a pair of rotors, equivalent and in eight-figure with certain clearance between them in the pump housing, rotating at the identical pace in opposite directions to carry out operate of suction and discharge of fuel. The two rotors are supported by rolling bearings in the stop covers of the pump, rotating at substantial speed and are retained at a mounted relative position by a pair of timing gears. The end clearance among rotors and finish addresses are mounted by adjustable metallic shims between the bearing housings and the finish go over at the set finish, which assures one-direction expansion of the rotor when temperature rises throughout its procedure.

Four sets of inner seals (also identified as piston ring) in the two conclude covers avert lube oil getting into into the pump housing. The shaft seal at the entrance-stop go over, also known as as framework oil seal or shaft seal, helps prevent leakage of air into the pump housing.

In purchase to reduce temperature of the pump, all versions of pumps (assume the two smallest models) are equipped with a gearbox cooler and entrance-end cover cooler.

Electricity is transmitted by means of a coupling or V-belt from the motor to the driving shaft of the pump and then by way of synchronizing gears to the pushed shaft


   Model Suction capability         (L/S)

Restrict vacuum




Motor Electricity


Inlet Dia.


Outlet Dia.




Suggested backing pump(design)
   ZJ-70          70      6×10-2   2780         one.five     eighty      50      87       2X-eight
  ZJB-70      5×10-2      100
  ZJ-150A          150      6×10-two   2900          3     one hundred      100      198       2X-fifteen
  ZJB-one hundred fifty      5×10-two      215
  ZJ-300          300      6×10-2   1450          4/5.five     one hundred fifty       one hundred fifty      490       2X-30A
  ZJB-three hundred      5×10-2      480
  ZJ-600          600      6×10-2   2900         5.five/7.five     one hundred fifty       150      490       2X-70A
  ZJB-600      5×10-2      503
  ZJ-1200A         1200      6×10-two    1450          11      300       300     1550       2X-70A  (2sets)
  ZJB-1200      5×10-two      250       250     1580

The main  advantage  of Roots  vacuum pump  is that  it can  operate  with high  pumping speed under  reduced suction  pressures, nevertheless,  has to  be backed by  a backing  pump.Under  typical operating situations, it is  permissible to not add  by-pass pipes.Roots vacuum pump need to not run with a larger-pressure  variation than allowable,otherwise  overheating   and overload  will   cause  damage   of  Roots   vacuum  pump.
For that reason, proper backing pump and necessary protection units need to be considered.Oil sealed mechanical  pump is generally chosen as   the fore   vacuum   pump.  Other   types   of backing   pumps   may   be   used   where    their requirement for greatest vacuum is not too  rigid. Particularly, when gas  pumped that contains large amount of  vapor, drinking water-ring vacuum pump  maybe   an  ideal   option  though   ultimate  vacuum achieved is on the low aspect.

Solution show:


  1. Standard export polywooden cases.

  2. Customized packaging can be offered.


CZPT method Be aware
Specific Doorway to door, extremely convenient, don’t need customs clearance or pick-up.
By air Airport to airport, you need to have to do the customs clearance and pick up the products at your nearby airport.
By sea Port to port and you need to have to do the customs clearance and pick-up the items at your neighborhood port.

Our solutions:

Pre-Revenue Service

  1. Supply 24-hour reply.

  2. Offer suited designs in accordance to clients’ requirements.

  3. Give in depth solution requirements and reasonal costs. 

In-Product sales Support

  1. Supervise complete creation time. 

  2. Supply product’s testing efficiency curve to clients.

  3. Provide inspection photos to customers after we complete creation.

Following-Product sales Provider

  1. Supply set up handbook.

  2. Underneath proper set up, typical maintenance and employing,we assure a single-year warranty.

  3. If item has malfunction,we will reply you within 24 hour and provide resolution or even deliver specialized workers to spot soon after acquiring upkeep notification.


1.  Q: Are you a maker or buying and selling firm?

    A: We are manufacturer of vacuum pumps and water pumps in China because 1986.

2.  Q: What is your MOQ?

    A: One established is ok.

3.  Q: What’s your payments terms?

    A: T/T, CZPT CZPT……

four.  Q: What certificates do you have?

    A: CE, ISO 9001 ….

5.  Q: How about the warranty?

    A: twelve months warranty since shipping.

six.  Q: What is the shipping time?

    A: For different models,diverse motor specs and diverse materials,delivery time is diverse,please double confirm with our revenue crew.

7.  Q: Can you do OEM model?

    A: Of course, welcome.

eight.  Q: CZPT reliable?

    A: We have entire screening program controlled by micro-device,testing performance curve can be sent to consumers just before arrange shipping.

Firm overview:
Recognized in 1986, our firm has been concentrating on the development and manufacture of vacuum pumps and h2o pumps.We are a extensive pump firm integrating manufacturing, sales and following-product sales maintenance solutions.

The major products include liquid ring vacuum pumpsrotary vane vacuum pumpsroots vacuum pumpcentrifugal water pump and CZPT vacuum pump system,which are widely used in all sorts of plastic extrusion linemedical and pharmaceutical business(autoclave sterilizer/capsule filling and sealing equipment)meals-associated industry(beverage machine/milking device/sugar plant)chemical industrypower plantcoal mine etc.

Get in touch with us:


Zj-70 Roots Vacuum Pump