LUBRICATION LUBRICANTS PERFORM THE FOLLOWING KEY FUNCTIONS.
1. Redu Reduce ce fric fricti tion on 2. Heat Heat diss dissip ipat atio ion n 3. Corr Corros osio ion n prev prevent entio ion n 4. Preven Preventio tion n of the the ingre ingress ss of of water water & grit grit 5. Keep Keep movin moving g par parts ts apar apartt 6. Carry Carry away away contami contaminan nants ts & debri debriss 7. Transm ansmit it pow power er 8. Prot Protect ect agai agains nstt wear wear 9. Seal eal for for gas gasses 10. Stop the risk risk of smoke and fire fire of objects objects
TYPES OF LUBRICANTS 1. Soli Solid dL Lub ubri rica cant nts: s:
Such as graphite, boron nitride, PTFE, molybdenum disulfide and tungsten disulfide also offer lubrication at temperatures (up to 350 °C) higher than liquid and oil-based lubricants are able to operate. 2. Liquid Lubricants: Mineral oil : Encompasses lubricating base oil derived from crude oil. Vegetable (natural) oils : Derived from plants and animals. For lubricant base oil use the vegetable derived materials are preferred. Common ones include high oleic canola oil, palm oil, sunflower seed oil and rapeseed oil from vegetable and Tall oil from animal sources. Synthetic oil : Oils Oils consisting of chemical of chemical compounds which were not originally present in crude oil ( petroleum), petroleum), but were artificially made (synthesized (synthesized)) from other compounds. 3. Gas Gas Lu Lubr bric ican ants ts:: Such as air, helium can be used, the gas being pumped into the bearing to
maintain sufficient pressure between the faces.
PROPERTIES AND TERMS ASSOCIATED WITH LUBRICANTS Viscosity: This is a measure of a fluid's resistance to flow. flow. It is ordinarily expressed in terms of the time required for a standard quantity q uantity of the fluid at a certain temperature to flow through a standard orifice. The higher the value, the more viscous the fluid is. Flash point: The temperature at which vapours of a lubricant will ignite. Pour point: An indicator of the ability of oil to flow at cool operating temperatures. It is the lowest temperature at which the fluid will flow when cooled under prescribed conditions. 1. Emul Emulsi sifi fica cati tion on 2. Acidity
USES OF ADDITIVES Anti-oxidants: Substance added in small quantities to prevent the chemical breakdown of lubricants and the formation if acids . Pressure Oxidation - Occurs when oxygen attacks fluids. The process is accelerated by heat, light, metal catalysts and the presence of water, water, acids, or solid contaminants. It leads to increased viscosity and deposit formation.
De-foaments (Antifoam): Additive used to suppress the formation of air bubbles which tend to form in a circulatory or hydraulic system
1. Graphite 2. Moly Molybde bdenum num Di-su Di-sulp lphid hideM eMoS oS2 is unreactive, being unaffected by dilute acids acids.. In its appearance and feel, molybdenum disulfide is similar to graphite and indeed it [1][2] [2] is widely used as a solid lubricant[1] because of its low friction properties, sometimes to relatively high temperatures. p arts clean by preventing the formation of dirt Detergent: Additive to keep engine parts particles Types of Lubrication systems (Diagrams )
1. Gravity
Drip Feed Oilers are Single Point Lubricators and are mounted directly on the Lubrication Points. These oilers dispense oil by gravity from transparent reservoir through Needle Valve. The Needle Valve is joined with Toggle Toggle Pin by which the Operator can On / Off the flow manualy.. The flow of the oil is controlled by adjusting the needle Valve and can be visiualized manualy from the in built Sight Glass. These Oilers are available in different Thread Size from 1/8" BSP to 3/8" BSP BSP..
2. 3. 4. 5.
Ring Splash Mist Circula ulation
Reasons for Planned Lubrication Procedures Hazards Associated with lubricants 1. Dilution 2. Cont Contam amiinati nation on
