SKF Oil+Air Lubrication Units and Mixing Valves Product Series OLA, MV and 161 For use in SKF Oil+Air Centralized Lubrication Systems

Contents Product overview 2 Product selection table 3 Fundamentals SKF Oil+Air lubrication systems 4 Components of oil+air lubrication systems 4 Principles of oil+air lubrication - example: rolling bearings 5 Lubricant quantities 5 Requirements for compressed air 6 Requirements for lubricant 6 Lubricant feed lines (criteria, bearing type) 7 SKF Oil+Air lubrication units Designs 8 Configurator, order example 9 Dimensions 10 Technical data 11 Hydraulic layouts 12 Spare parts 23–24 SKF Oil+Air lubrication unit OLA8-1B6BB (maximum equipment level) SKF Oil+Air mixing valves with metering MV20x-1 /...

SKF Oil+Air Lubrication Units and Mixing Valves SKF Oil+Air lubrication units are employed for a wide range of applications in the field of centralized lubrication technology The main field of application is mechanical engineering due to the high demands made on a defined lubrication system that provides high availability with low wear and a long service life SKF Oil+Air lubrication units are employed for bearing lubrication, especially the lubrication of spindle bearings Additional fields of application include the lubrication of chains, gear trains, and process oiling SKF Oil+Air lubrication...

SKF Oil+Air lubrication systems Fundamentals Oil+air lubrication systems SKF Oil+Air lubrication systems are employed for bearing lubrication, especially the lubrication of spindle bearings Additional fields of application include the lubrication of chains, gear trains, and process oiling Oil+air lubrication is distinguished by the fact that a metered quantity of oil is drawn into streaks in a lubrication line by a continuous air flow (compressed air) and is transported in the direction of the compressed air flow along the tube wall and to the lubrication point A lubrication unit, a progressive...

SKF Oil+Air lubrication systems Fundamentals Principles of oil+air lubrication - example: rolling bearings Many fields of engineering require that the speeds of spindles and shafts on rolling bearings increase beyond the limits cited in rolling bearing catalogs, e g in the case of bearings for grinding and milling spindles to increase cutting speeds Beyond the design and construction of the bearing, another critical aspect of meeting this requirement is the selection of a suitable lubrication system Conventional lubrication systems (e g oil bath lubrication or circulating-oil lubrication), for...

SKF Oil+Air lubrication systems Fundamentals Requirements for compressed air Compressed air must be dry and filtered; filter rating of <= 5 μm A conventional water separator, preferably with semi-automatic emptying, is sufficient for water separation The quantity of air required for faultless transport of the oil in tubing with an internal diameter of 2 3 mm ranges from roughly 1 000 to 1 500 I/h This value applies to oil viscosity classes ISO VG 32 to ISO VG 100 Higher values must be assumed in the case of oils with a higher viscosity or different adhesiveness The air pressure has to be adjusted...

SKF Oil+Air lubrication systems Fundamentals Lubricant feeding (criteria, bearing type, etc ) The way the lubricant is fed to the bearing depends on the bearing type and the bearing assembly’s design features The following illustrations provide examples of the lubricant feeding († Fig 1) In case of single-row rolling bearings, it is possible for the lubricant to be introduced into the rolling bearing from the side The nozzle should be at the level of the rolling bearing’s inner ring Under no circumstances should the oil+air flow be aligned directly with the cage of the rolling bearing If using...

SKF Oil+Air lubrication unit – OLA Designs Note Maximum design Minimal design Gear pump unit with control unit Gear pump unit without control unit This page shows possible designs of the oil+air lubrication units The configurator on the following page allows the functional specification of a unit with associated order number Oil filters with monitoring Oil filters without monitoring Pressure switch for minimum air pressure Compressed air control valve with air filter and water seperator Mixing valve with metering 3/2 directional air control valve Counterbore for solderless tube union for tube...

SKF Oil+Air lubrication unit – OLA Configurator Order coder Product series Number of metering points 5 = 5 metering points 1 = 1 metering point 2 = 2 metering points 6 = 6 metering points 7 = 7 metering points 3 = 3 metering points 8 = 8 metering points 4 = 4 metering points Design of oil filter X = without oil filter A = with 3 µm oil filter, without monitoring B = with 3 µm oil filter, with monitoring Design of air filter / valve 1) 0 = without air filter, without valve 1 = without air filter, with 3 / 2 directional control, 24 V DC 2 = without air filter, with 3 / 2 directional control valve,...

SKF Oil+Air lubrication unit – OLA Dimensions Fig 3 Maximum and minimum equipment levels 507 Clearance for cover mounting Dimensions of oil+air mixing valve with metering A OLA1 OLA2 OLA3 OLA4 OLA5 OLA6 OLA7 OLA8

SKF Oil+Air lubrication unit – OLA Technical data Oil pressure switch (included in gear pump unit) Gear pump unit 1) Delivery rate of unit 2) Number of metering points Max operating pressure Ambient temperature Pumped medium 0,2 l / min 1 to 8 (>8 on request) 30 bar +10 to +40 °C Mineral or synthetic oil, compatible with NBR elastomersn Operating viscosity Rated capacity of lubricant reservoir Lubricant reservoir material Protection class Pressure relief valve Thermal circuit breaker Duty type (per VDE 0530) Mounting position Polyamide (PA6) IP54 Included Included Standard design: S3, ON-time...

SKF Oil+Air lubrication unit – OLA Hydraulic layouts Oil+air lubrication unit with control unit Oil+air lubrication unit without control unit Wiring diagrams Design of gear pump unit Design E / F MKU2-12BC11000+428 /+429 1) Connected by customer to internal control unit (if present) or external PLC Compressed-air valve minimum air pressure (DL), compressed-air valve Y1 2) The control unit can be switched between 230 V and 115 V AC The pump motor is not switchable! 1) Connected by customer to internal control unit (if present) or external PLC Compressed-air valve minimum air pressure (DL), compressed-air...