INSTALLATION & MAINTENACE MANUAL
RCOe2100/03.06
16
2.3 – Operating Fluids
The viscosity, quality and cleanliness of the operating fluid are decisive factors in determining the reliability,
performances and life time of a hydraulic component.
2.3.1 – Working viscosity range
The motor maximum life time and performances are achieved within the recommended viscosity range. For
applications exceeding this range we recommend that you contact Parker Calzoni s.r.l.
V
rec.
= recommended operating viscosity 30....50 mm
2
/s
This viscosity is referred at the same time to the temperature of the fluid entering the motor and to the
temperature of the fluid inside the motor housing (case temperature).
2.3.2 – Extreme Conditions
The following limitations are applied:
V
min.abs.
= 10 mm
2
/s for instants in case of emergency, with a maximum case fluid temperature
of 80°C
V
min.
= 18 mm
2
/s with reduced torque and maximum supplied power performances
V
max.
= 1000 mm
2
/s during “cold” start up
2.3.3 – Choosing the type of fluid according to the operating temperature
The motor operating temperature is defined as the higher between that of the inlet feeding fluid entering
the motor and that of the fluid inside the motor case (case temperature).
Temperature must never exceed 80°C anywhere in the system.
It is recommended that you choose the viscosity of the fluid based on the maximum operating temperature
so that to make the motor operate within the recommended viscosity range.
