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Hangzhou Youshan Fine Workmanship Machinery Co., Ltd.

Tensioning Device, Hydraulic Pump, Electric Pump manufacturer / supplier in China, offering Electric Hydraulic Pump for Cylinders (ZB4-500), 650 Ton Capacity (Load) Hydraulic Jack, 80 Ton Air Hydraulic Jack (JR80-1) and so on.

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Supplier Homepage Product Others Electric Hydraulic Pump for Cylinders (ZB4-500)

Electric Hydraulic Pump for Cylinders (ZB4-500)

Purchase Qty.:
1-2 3+
FOB Unit Price: US $570 US $550
Purchase Qty. (Pieces) FOB Unit Price
1-2 US $570
3+ US $550
Get Latest Price
Production Capacity: 100000 Sets/Year
Transport Package: Wooden Cases
Payment Terms: L/C, T/T, D/P, Western Union, Paypal

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Basic Info
  • Model NO.: ZB4-500
  • Type: Handheld
  • Trademark: OLM
  • Origin: Liuzhou, China
  • Pressure Medium: Oil
  • Certification: CE
  • Specification: 460*360*560mm
  • HS Code: 8412299090
Product Description
Product Description

Usage & Feature:

ZB4-500  electric oil pump  is  the power  resource and  control device  for wire  tension, 
which is used in conjunction with various jacks(Nom. pressure 50MPa),as  well as other low flow or  high pressure  hydraulic equipments.  ZB4-500s electric  oil pump  is based  on ZB4-500.  It  features  trinity  3-way  valve, simultaneous  operation  of  tensioning  and  pressing.

             Electric Hydraulic Pump for Cylinders (ZB4-500)

Specifications: ZB4-500 Hydraulic pump, ZB2-500 Hydraulic pump

    Electric Hydraulic Pump for Cylinders (ZB4-500)


ZB4-500 electric  oil pump  consists of pump,  control valve,  cabinet, and internal  pipes.

                          Electric Hydraulic Pump for Cylinders (ZB4-500)
                                         -----------------P1 hydraulic system----------------
1. The device is a self-priming axial plunger pump. When motor drives axis9, leaned tray will push the plunger into plunger sleeve, and return spring raises the plunger. The plunger repeats the operation to meet the function of in-taking and out-putting oil.

            Electric Hydraulic Pump for Cylinders (ZB4-500)
                         P2 Pump Structure

2. The  left and  right valve  bodies  which are  the same  structure constitute  the pump. Each  valve body  consists of  throttle  valve, unload  valve,  one-way valve,  pressure  meter,relief valve, intake nozzle, output nozzle and oil-return nozzle.  (P3)

The throttle  valve is  a tunable wedge  valve used  to adjust input  flow of  the cylinder.The unload valve is a kind of tunable globe valve(open---unload,  close---intake oil). The one-way  valve of  ball  type  stabilizes the  pressure  of  working  system. The  relief  valve  is  a tunable overflow valve used to adjust the system pressure of 50MPa.

            Electric Hydraulic Pump for Cylinders (ZB4-500)
                                    (P3) Control Valve Structure

Using & maintenance:

1.Use  #46 oil, keep  it clean, filter  it frequently,  and replace it  regularly. The  height of oil in the  cylinder is 150-200mm.  To assure the  function of greasing,  the oil level  mustn'be lower than 150mm, and the temperature  mustn't be higher 60ºC.

2.  Operating for the first time
Before operation,  air exists in each  oil container, please  open the control  valve, idle the oil pump, expel the air till bubbles in oil-return hose vanish.

3.  Relief valve adjustment
Seal the output nozzle, open the throttle valve, close the unload valve. Then switch the pump,close the throttle valve, and read the pressure meter as well as adjust the unload valve till designed pressure. The adjusting pressure of relief valve is 10%-15% higher than working pressure.

4. Pressure meter check-out
To  assure the  quality  of  operation  and accuracy  of  measurement,  check  the pressure meter as the regulation.


Electric Hydraulic Pump for Cylinders (ZB4-500)

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