HMP-0567E Rev.7 (12/19)
9) Shaft speed
If the operating shaft speed is within the range shown in Table-3.9.1, the pump can be operated
continuously.
Table-3.9.1: Rated shaft speed ranges
Allowable shaft speed of QT2* and QX2* are different from the above table. Please check with
specification or external dimensions drawing of the pump.
10) Hydraulic fluid
a) Fluid type
Use a hydraulic fluid with an ISO VG (Viscosity Grade) of 46 to 68 (equivalent to a viscosity
index of 90 or more).
If the operating pressure exceeds 6.9 MPa, use an anti-wear hydraulic fluid.
If a phosphate ester type hydraulic fluid is used, the seal option must be selected to "V." (Refer
to Section 3.1.)
Please contact us if considering the use of any hydraulic fluid not listed above, or the use
of a fire-resistant fluid (excluding w/o emulsion type and fatty acid ester based hydraulic
fluids).
b) Viscosity
If the operating pressure is greater than 6.9 MPa, use a hydraulic fluid with a viscosity of 20 to
500 mm
2
/s.
If the operating pressure is 6.9 MPa or less, a hydraulic fluid with a viscosity of 2 to 500 mm
2
/s
may be used.
c) Fluid temperature
Ensure that the temperature of the hydraulic fluid during operation is within the 0 to 60°C range.
d) Degree of contamination
Use a clean hydraulic fluid (ISO Code 22/20/17 or lower).
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