日本YUKEN進(jìn)口NPV11R型葉片泵產(chǎn)品特征
上海乾拓貿(mào)易有限公司
：楊江玲
企業(yè)QQ：2880626083
手 機(jī)：（）
電 話：-8012
郵箱；@163.com
地址：上海市嘉定區(qū)江橋嘉涌路6號樓713室
for hydraulic fluids and keep contamination level within NAS 12.
an air bleed valve should be installed beforehand on the discharge side (model No. ST1004-?10?,
Catalogue No. Pub. EC-3001.), or discharge air by slightly slackening the connection on the discharge side.
At starting, operate the pump intermittently as far as possible with no load.
For fluid viscosity at starting, see the item of "Hydraulic Fluids".
Other precautions4. If a PV11R series single pump is used at speed below 1200 r/min,
These pumps are of completely unique design for extra high pressure applications.
The excessive wear to the vanes and camring which usually occurs in shch high pressure
vane pumps has been solved by means of adopting the special methods
Any type of hydraulic fluids listed in the Table 1 below can be used. However,
Fluid viscosity and temperature2. Use the hydraulic fluids
as indicated on the installation drawings. In case where the pump is installed
Control of contamination3. Contamination of hydraulic fluids results
in pump failures and reduced pump lives. Carry out sufficient contamination control
the pump may have difficulty in sucking up fluid. In such cases,
For pressures above 25 MPa (3630 PSI), hold the speed above 1450 r/min.
For starting at low speed, the maximum viscosity is limited. For details, see the item of "Hydraulic Fluids"
Characteristics are described on the pages as shown on the table below. Please see the pages concerned.
Fluid viscosity and temperature Maximum viscosity for low start-up speed (Table 3) (Table 4)
in both mechanical construction aspects and lubrication systems.
For the brands of anti-wear type water-glycols, see the item of "Hydraulic Fluids" on page 3.
which satisfy the recommended viscosity and oil temperature given in the Table 3 below. However,
install the pump with the suction port upside so that the pump can suck up fluid easily at starting.
and maximum pump speed may be changed according to the type of hydraulic fluids to be used.
For details, please refer to the specifications of the pump concerned.
Also, use a 100 μm (150-mesh) tank filter on the suction side, more than 50 mm (2 in.) away from the tank bottom.
Alignment of shaft1. Employ a flexible coupling whenever possible,
the specifications of the pumps such as maximum pressure
from the oil level {less than 0.8 metre (2.6 ft.) in case of using phosphate ester fluids or water containing fluids}.
Precautions at starting3. At an initial operation or at an operation after a long rest,
and avoid any stress from bending or thrust. Maximum permissible misalignment is less than 0.1 mm
(.004 inches) TIR and maximum permissible misangular is less than 0.2°.
Suction pressures2. Set the suction pressure at pump inlet port at the value given in the table below.
Furthermore, use the pipes in the suction side having the diameter
on the tank or at the position higher than the tank top cover,
the height of the suction port of the pump should be less than 1 metre (3.3 ft.)
please note that if any of the pumps listed in the Table 4 is started at low speed, the maximum fluid viscosity is limited.
日本YUKEN進(jìn)口NPV11R型葉片泵產(chǎn)品特征
