Catalogue Process GB 2020

LUBRICATE ORAPI-PROCESS.COM 27 FOCUS ON GREASE GRADES Penetration at 25°C MECHANISM TO BE LUBRICATED CENTRALISED GREASING GEARS BEARINGS SEALING Type of grease Fluid grease Soft grease Standard grease Thick grease NLGI grade no. (tenths of mm) 0-00 1 2 3 355-430 310-340 265-295 220-250 COMPOSITION Grease consists of 3 components The combined characteristics of these 3 components give grease its own characteristics. The ratios are different for a paste: High-performance additives (solids) can reach 60% PERFORMANCE Grease performance is assessed by 2 tests: • Extreme pressure: 4-ball test: load resistance of the lubricating film 40 to 800 kg. Result in kg. • Anti-wear test Wear resistance 40 kg / 1 hour. Result in mm. HIGH-PERFORMANCE ADDITIVES DE 0 TO 10% THICKENER 10% OILS 80% OILS These can be mineral or synthetic. Synthetic lubricants currently represent only a small percentage of the overall lubrication market, but this proportion is rising. THICKENERS Help obtain the desired consistency thanks to simple or complex soaps, or silica, bentone or polyurea. ORAPI's tribologists pay particular attention to the selection and use of high-performance additives that they incorporate into our greases. These can be liquids or solids such as MoS2, graphite, PTFE and NANOLUBRICANTS and have a significant impact on the performance of the greases by: reducing the friction coefficient, increasing resistance to EP (extreme pressure), minimising material wear, improving adhesion, protecting against the premature oxidation of the grease, protecting metals against corrosion, etc. The grade varies depending on the temperature. The grade increases for cold work - The grade decreases for hot work (the grease softens). FOR AN ESTIMATE, ADVICE OR SPECIFIC REQUEST TEL.: +33(0)4 74 40 20 20 FAX: +33(0)4 74 40 20 21 CONTACT@ORAPI.COM