Агрегат для масловоздушного смазывания OLA

OLA oil-air lubrication unit

For oil-air lubrication systems

To ensure highly efficient and long-lasting service of machine tool spindle assemblies, SKF has developed oil-air lubrication systems. These systems provide a constant supply of precise oil volumes, with the ability to adjust dosage and cycles to suit operating conditions.

A sequential or single-line metering device delivers a predetermined amount of lubricant to a mixing valve. Then, under the influence of an air flow, the lubricant is delivered to the lubrication point in intermittent jets through an auxiliary line. As a result, an oil-air mixture is continuously supplied to the bearing or chain. The air flow creates positive pressure in the bearing assembly, preventing the penetration of contaminants. This lubrication method typically does not produce oil mist.

Oil flow continuity sensors continuously monitor the oil flow in the auxiliary line. Oil-air lubrication units can be individually configured for each application.

Technical characteristics and advantages

  • Improved machining performance when lubricating spindle bearings thanks to higher speed parameters (for spindle bearings – up to 2.5 × 106 mm × rpm)
  • Increased reliability thanks to the continuous supply of a predetermined amount of lubricant. The air supplied by the system protects the bearings from external contaminants.
  • Reduced lubricant consumption thanks to the minimum required quantity principle contributes to improved safety and environmental protection. Controlled dosing for each lubrication point allows for savings of approximately 90 liters of lubricant compared to oil lubrication.
  • No oil mist, no need to refill with grease as with plastic grease lubrication

Application areas

  • Lubrication of spindle bearings
  • Chain lubrication
  • Lubrication of gears
  • Lubrication of guides
  • Lubrication of assembly and process devices
Product brochure (1.4 MB)
Installation instructions
Category:

Description

Technical characteristics of pumps
Operating principle Oil-air lubrication unit with compact gear pump unit and mixing valve
MFL gear pump unit
Lubricant Mineral or synthetic oil compatible with butadiene acrylonitrile rubber, viscosity from 20 to 1000 mm²/s (cSt)
Feed volume 0.2 l/min 0.05 gallons/min
Number of outputs 1–8
Working pressure 30 bar 435 psi
Ambient temperature from +10 to +40 °C from +50 to +104 °F
Supply voltage 115/230 VAC; 24 VDC
Rated current at 50 Hz 1.06/0.53 A
Rated current at 60 Hz 1.36/0.68 A
Nominal current at 24VDC 1.6 A
Power at 50 Hz 60 W
Power at 60 Hz 75 W
Power at 24VDC 39 W
Capacity of a plastic tank 3 l
Tank material Polyamide (PA6)
Protection class IP 54
Pressure relief valve included in the kit
Thermal switch included in the kit
Operating mode (according to VDE 0530) Standard design: S3, working time 20 % (from 1.25 to 25 min)
Installation position vertical
Oil pressure switch (part of the gear pump unit)
Operating principle Normally open contact
Switching voltage range 10-25 VAC; 10-36 VAC
Switching current (resistive load) ≤ 1 A
Switching capacity (resistive load) ≤ 10 W
Nominal pressure 20 bar 290 psi
Lubricant level sensor (part of the gear pump unit)
Operating principle Normally closed contact (opens when the filling level is too low)
Switching voltage range 10-25 VAC; 10-36 VAC
Switching current (resistive load) ≤ 0.25 A
Switching capacity (resistive load) ≤ 3 W
Specifications - Options
Control unit
Type IG54-20-S4-I
Supply voltage 115/230 VAC (50/60 Hz) selectable; 24 VDC
Pump duty cycle limitation 60 sec (not adjustable)
Time interval 10 min (adjustable from 1 to 99 min)
Pump stop delay time 5 sec (adjustable from 1 to 99 sec)
Pre-lubrication cycles 10 (adjustable from 0 to 99 cycles)
Minimum air pressure switch
Operating principle Normally closed contact / normally open contact (depending on the wiring diagram)
Switching pressure 0.5–5 bar (preset 3 bar) 7.25–72.5 psi (preset 43.5 psi)
Max. switching voltage 250 V
Max. switching current 5 A
Reset differential About 15 %
3/2-way directional control pneumatic valve
Switching voltage 120V AC, 60Hz; 230V AC, 50Hz; 24V DC
Switching capacity 4 W
Plug connector DIN EN 175301-803-C
Pressure range 0–10 bar 0–145 psi
Pneumatic control valve
Type Diaphragm regulator
Max. primary pressure 0–16 bar 0–232 psi
Secondary pressure 0.5–10 bar 7.25–145 psi
Seal material NBR
Pneumatic control valve including filter and moisture separator
Filter mesh 5 microns
Water separation semi-automatic
Oil filter
Filter mesh 3 µm or 10 µm
Contamination retention 6.3 g at ∆p = 5 bar (3 µm)
5.2 g at ∆p = 5 bar (10 µm)
Oil contamination level indicator
Operating principle Normally closed contact = alarm 100 %
Normally open contact = warning signal 75 %
Max. switching voltage 24 V AC/DC
Max. switching capacity 15 W
Breaking capacity (resistive load) 1 A (at 15 V AC/DC)
Opening pressure ∆5 bar –10 % ∆72.5 lb/in² –10 %
Sample order
The product can be configured using a configuration code. The order template includes the applicable part number and an explanation.
OLA1-1E0XA30000000
  • OLA series products
  • One dosing point
  • Without control unit, 230 V AC
  • Without air filter, without valve
  • Without oil filter
  • Without switch for minimum air pressure
  • Dosing volume 0.03 cm3/cycle
You can configure your product using the CAD configurator below. This will provide you with a specific order number. More detailed information is available in the product catalog.

Configure the product, download the CAD file

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