Eaton PVE21 User Manual download pdf (Page 28)

A.28

Application Data

Fluid Cleanliness

Proper fluid condition is essential for

long and satisfactory life of hydraulic

components and systems. Hydraulic

fluid must have the correct balance of

cleanliness, materials, and additives for

protection against wear of components,

elevated viscosity, and inclusion of air.

Essential information on the correct

methods for treating hydraulic fluid is

included in Vickers publication 561

“Vickers Guide to Systemic

Contamination Control” available from

your local Vickers distributor or by

contacting Vickers, Incorporated.

Recommendations on filtration and the

selection of products to control fluid

condition are included in 561.

Recommended cleanliness levels, using

petroleum oil under common conditions,

are based on the highest fluid pressure

levels in the system and are coded in the

chart below. Fluids other than petroleum,

severe service cycles, or temperature

extremes are cause for adjustment of

these cleanliness codes. See Vickers

publication 561 for exact details.

Vickers products, as any components,

will operate with apparent satisfaction in

fluids with higher cleanliness codes than

those described. Other manufacturers

will often recommend levels above those

specified. Experience has shown,

however, that life of any hydraulic

component is shortened in fluids with

higher cleanliness codes than those

listed below. These codes have been

proven to provide a long, trouble-free

service life for the products shown,

regardless of the manufacturer.

System Pressure Level

bar (psi)

Product

<70 (<1000)

70-210 (1000-3000) 210+ (3000+)

Piston Pumps – Variable 18/16/14 17/15/13 16/14/12

Fire resistant fluids

Water glycol, phosphate ester and polyol

ester fluids may be used with PVE

pumps. With the PVE12 and 19, system

pressure and input speed should not

exceed 140 bar (2000 psi) and 1800

r/min.

With the PVE41-25V, system pressure

and input speed shoud not exceed 140

bar (2000 psi) and 1200 r/min (1800

r/min for water glycol). System

temperature should not exceed 54

°C.

(130

°F). Inlet vacuum should not exceed

101,6 millibar (3 in. Hg.)

Hydraulic fluids and

temperature ranges

Use antiwear hydraulic oil, or automotive

type crankcase oil designations SC, SD,

SE or SF per SAE J183FEB80.

Select a viscosity grade that will allow

optimum viscosity, between 40 cSt (180

SUS) and 16 cSt (80 SUS), to be

achieved within the optimum

performance envelope shown.

For further information, see Vickers

Hydraulic Hints and Trouble Shooting

Guide

Ordering procedure

Order PVE pumps by the full model

designation. Pump displacement,

mounting flange type, direction of

rotation, pump configuration, shaft end

type, seals, pressure adjustment range,

specific control funtions are all specified

in the full model code.

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