[vc_accordion active_tab=”1″ style=”2″][vc_accordion_tab title=”CENTRALISED LUBRICATION SYSTEM”][vc_column_text]This is a set of suitably interconnected elements providing periodic lubrication to the different moving parts of a machine or plant. This set usually consists of: pump, distributors, dosing valves, fittings, pipes, programmer and control accessories. Centralised lubrication normally operates on non-reused oil.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”LOW PRESSURE LUBRICATION”][vc_column_text]Lubrication is defined as low pressure when an operating pressure of 2-3 bar is sufficient to allow oil to reach the muving surfaces.
\nIt is suitable for lubricating small and medium sized machines and is obtained with simple, compact, economic system.
\nLow Pressure lubrication is particularly recommended for high precision machine tools (such as grinding and boring machines, lathes, etc.) in which lubrication must not alter the stability of the machine’s slides and screws.
\nThe moving parts must be suitably prepared.
\nThe AZETA line includes manual and electric-cyclic volumetric pumps as well as vibration pumps. It is necessary to use resistive dosing valves as well as new and clean oil.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”MEDIUM PRESSURE LUBRICATION”][vc_column_text]Lubrication is defined as medium pressure when an operating pressure of 20-40 bar is used.
\nIt is suitable for large machines with many lubrication point, which may be a long way from each other.
\nMedium pressure eliminates foreign matters and coolants from lubrificated parts.
\nMedium pressure entails using volumetric dosing valves operating ad a set, constant volume of oil or fluid grease.
\nThe AZETA line includes volumetric pneumatic pumps and gear pumps.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”AZETA AIR MIST LUBRICATION”][vc_column_text]A minimal lubrication system operating on ultra low oil consumption.
\nCompresses air is used as a carrier.
\nMetered oil, suitably mixed with air, is conveyed in non atomised state to the lubrication point.
\nAZETA AIR MIST is especially recommended for lubrication of high speed rolling contact bearings on spindles, electro-spindles and of rotating bushes of lathes with sliding headstock.
\nFor linear guides, the continuous flow keeps clean the tracks and races of balls or slides, as well as the contact races of rolling contact bearings.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”VOLUMETRIC PUMP”][vc_column_text]Whenever this type of pump is activated, a pre-set volume of lubricant is supplied.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”CONTINUOUS DUTY PUMP”][vc_column_text]When operating, this pump delivers a pre-set quantity of lubricant per time unit.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”MANUAL PUMP”][vc_column_text]A manually activated volumetric pump.
\nThe required volume is delivered by a plunger piston thrust by suitably pre-loaded mechanical spring of adequate size. Oil volume can be adjusted.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”ELECTRIC-CYCLIC PUMP”][vc_column_text]An electrically activated volumetric pump with pre-set pause times.
\nThe required volume is delivered by a plunger piston thrust by a suitably pre-loaded mechanical spring of adequate size.
\nOil volume can be adjusted.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”VIBRATION PUMP”][vc_column_text]A low pressure continuous duty volumetric pump with relative flow rate in excess of the total flow rate of the dosing valves. Excess oil flows through a maximum level valve and returns to the tank.
\nThis process continues until the pump is turned off, thus maintaining lubricant in the dosing valves ad constant pressure.
\nLubricant volume is determined by operating time.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”PNEUMATIC PUMP”][vc_column_text]A medium pressure volumetric pump activated by compressed air and with a (theoretically) pre-set air-to-oil ratio. The AZETA range includes this pump with a plunger piston for low volumes and another type with piston plus lip seals for high volumes.
\nThe lubricant\u00a0 volume per lubrication point is determinated by the (volumetric) dosing valves.
\nThe total flow rate of the dosing valves can be, at maximum, 2\/3 of pump flow rate.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”LUBRICATION CONTROL UNIT”][vc_column_text]Known as a control unit, as it is similar to low pressure hydraulic control units used for lubrication. It consists of an electric motor, a gear pump and a valve set. The control unit feeds and keeps the lubricant at constant pressure within a lubricating network, which may be wide ranging and without any limit to its relative flow rate.
\nThe lubricant volume per lubrication point is determined by the (volumetric) dosing valves.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”DOSING VALVES”][vc_column_text]An element which injects and meters the lubricant.
\n– resistive dosing valve: for metering a pre-set quantity of oil drops per minute
\n– volumetric dosing valve: for metering a pre-set volume of oil per stroke (irrespective of oil temperature and viscosity).[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”FLOW RATE”][vc_column_text]The volume of oil delivered by the pump per time unit or per activation.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”RELATIVE FLOW RATE”][vc_column_text]This is an important criterion for selecting both pump and dosing valves.
\nIn the case of resistive dosing valves, it corresponds to the number of oil drops delivered per minute. As far as pumps are concerned, this data-item is used to determine oil volume delivery time.
\nIn the AZETA system, when the total of the relative flow rates of the dosing valves is equal to the relative flow rate in the pump, the entire volume of the pump is delivered in three minutes.
\nThe greater the sum of the relative flow rates of the dosing valves, the shorter the pump delivery time.
\nThe data refer to oil with viscosity of 65 cSt at 40\u00b0C, and to tests run at a temperature of 20\u00b0C.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”VISCOSITY”][vc_column_text]Flow resistance of a liquid (oil) caused by friction between its molecules.
\nIn this web site, this value is always expressed in centiStokes (cSt) at a reference temperature of 40\u00b0C.[\/vc_column_text][\/vc_accordion_tab][\/vc_accordion]\t\t<\/div><\/div>[vc_empty_space][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” bg_type=”bg_color” type=”vc_default” bg_color_value=”#c60000″ css=”.vc_custom_1498227877465{margin-bottom: -75px !important;}”][vc_column][vc_column_text][\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"
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