The application of minimum quantity lubrication (MQL) to metal machining has emerged as an alternative means to reduce cutting fluid usage, leading to cleaner production. In grinding, although MQL is considered to be progress regarding the environment, its application is restricted due to excessive heat generation and wheel clogging, which reduce final product quality and increase tool wear. This chapter reviews the research using MQL grinding aimed at improvements in terms of both wheel cleaning (by using an additional compressed air jet) and cutting fluid reduction (by adding water to the MQL oil). © 2013 Woodhead Publishing Limited All rights reserved. 113133Alves, J.A.C., Fernandes, U.B., Diniz, A.E., Bianchi, E.C., Aguiar, P.R., Canarim, R.C., Analysis of the influence of sparkout time on grinding using several lubrication/cooling methods (2009) Journal of the Brazilian Society of Mechanical Sciences and Engineering, 31 (1), pp. 47-51Alves, M.C.S., (2007) Influência dos métodos de lubri-refrigeração na retificação do aço ABNT 4340 usando rebolo de CBN, , PhD Thesis, UNESP - BauruAlves, M.C.S., Bianchi, E.C., Aguiar, P.R., Canarim, R.C., Influence of optimized lubrication-cooling and minimum quantity lubrication on the cutting forces, on the geometric quality of the surfaces and on the micro-structural integrity of hardened steel parts (2011) Matéria, 16 (3), pp. 754-766Attanasio, A., Gelfi, M., Giardini, C., Remino, C., Minimal quantity lubrication in turning: effect on tool wear (2006) Wear, 260 (3), pp. 333-338Bartz, W.J., Lubricants and the environment (1998) Tribology International, 31 (1-3), pp. 35-47Brinksmeier, E., Heinzel, C., Wittman, M., Friction, cooling and lubrication in grinding (1999) CIRP Annals - Manufacturing Technology, 48 (2), pp. 581-598Byrne, G., Scholta, E., Environmentally clean machining processes a strategic approach (1993) CIRP Annals - Manufacturing Technology, 42 (1), pp. 471-474Cameron, A., Bauer, R., Warkentin, A., An investigation of the effects of wheel cleaning parameters in creep-feed grinding (2010) International Journal of Machine Tools and Manufacture, 50 (1), pp. 126-130Catai, R.E., Silva, L.R., Bianchi, E.C., Aguiar, P.R., Zilio, F.M., Valarelli, I.D., Salgado, M.H., Performance of aerodynamic baffles in cylindrical grinding analyzed on the basis of air layer pressure and speed (2008) Journal of the Brazilian Society of Mechanical Sciences and Engineering, 30 (1), pp. 47-50Choi, T.J., Subrahmanya, N., Li, H., Shin, Y.C., Generalized practical models of cylindrical plunge grinding processes (2008) International Journal of Machine Tools and Manufacture, 48 (1), pp. 61-72Dhar, N., Islam, S., Kamruzzaman, M., Effect of minimum quantity lubrication (MQL) on tool wear, surface roughness in turning AISI-4340 steel (2006) Journal of Materials Processing Technology, 172 (2), pp. 299-304Diniz, A.E., Marcondes, F.C., Coppini, N.L., (2008) Tecnologia da usinagem dos materiais, , Artiliber Editora LtdEbbrell, S., Woolley, N.H., Tridimas, Y.D., Allanson, D.R., Rowe, W.B., Effects of cutting fluid application methods on the grinding process (2000) International Journal of Machine Tools and Manufacture, 40 (2), pp. 209-223Fratila, D., Caizar, C., Application of Taguchi method to selection of optimal lubrication and cutting conditions in face milling of AlMg3 (2011) Journal of Cleaner Production, 19 (6-7), pp. 640-645Fusse, R.Y., França, T.V., Catai, R.E., Silva, L.R., Aguiar, P.R., Bianchi, E.C., Analysis of the cutting fluid influence on the deep grinding process with a CBN grinding wheel (2004) Materials Research, 7 (3), pp. 451-457Guo, C., Shi, Z., Attia, H., Mcintosh, D., Power and wheel wear for grinding nickel alloy with plated CBN wheels (2007) CIRP Annals - Manufacturing Technology, 56 (1), pp. 343-346Hafenbraedl, D., Malkin, S., Tecnologia ambientalmente correta para retificação cilíndrica interna (2001) Machines and Metals Magazine, 37 (426), pp. 40-55Heisel, U., Lutz, D., Wassmer, R., Walter, U., The minimum quantity lubricant technique and its application in the cutting process (1998) Machines and Metals Magazine, 386, pp. 22-38Hong, S.Y., Broomer, M., Economical and ecological cryogenic machining of AISI 304 austenitic stainless steel (2000) Clean Technologies and Environmental Policy, 2 (3), pp. 157-166Howell, J.R., Lucke, W.E., White, E.M., (2006) Health and Safety Aspects in the Use of Metalworking Fluids, , Taylor & Francis Group, LondonIrani, R.A., Bauer, R.J., Warkentin, A., A review of cutting fluid application in the grinding process (2005) International Journal of Machine Tools and Manufacture, 45 (15), pp. 1696-1705Jackson, M.J., Khangar, A., Chenc, X., Robinson, G.M., Venkatesh, V.C., Dahotre, N.B., Laser cleaning and dressing of vitrified grinding wheels (2007) Journal of Materials Processing Technology, 185 (1-3), pp. 17-23Klocke, F., (2009) Manufacturing Processes 2: Grinding, Honing, Lapping, , Springer, BerlinLee, S.W., Le, Y.C., Jeond, H.D., Choi, H.Z., The effect of high pressure air jet on form accuracy in slot grinding (2002) Journal of Materials Processing Technology, 128 (1-3), pp. 67-72Machado, A.R., Diniz, A.E., (2000) Advantages and disadvantages of the use of the cutting fluidsMalkin, S., Guo, C., Thermal analysis of grinding (2007) CIRP Annals - Manufacturing Technology, 56 (2), pp. 760-782Marinescu, I.D., Hitchner, M., Uhlmann, E., Rowe, W.B., Inasaki, I., (2007) Handbook of Machining with Grinding Wheels, , CRC Press/Taylor & Francis GroupMarinescu, I.D., Rowe, W.B., Dimitrov, B., Inasaki, I., (2004) Tribology of Abrasive Machining Processes, , William Andrew IncMin, S., Inasaki, I., Fujimura, S., Wada, T., Suda, S., Wakabayashi, T., A study on tribology in minimal quantity lubrication cutting (2005) CIRP Annals - Manufacturing Technology, 54 (1), pp. 105-108Obikawa, T., Kamata, Y., Shinozuka, J., High-speed grooving with applying MQL (2006) International Journal of Machine Tools and Manufacture, 46 (14), pp. 1854-1861Oliveira, D.J., Guermandi, L.G., Bianchi, E.C., Diniz, A.E., Aguiar, P.R., Canarim, R.C., Improving minimum quantity lubrication in CBN grinding using compressed air wheel cleaning (2012) Journal of Materials Processing Technology, 212 (12), pp. 2559-2568Pawlak, Z., Klamecki, B.E., Rauckyte, T., Shpenkov, G.P., Kopkowski, A., The tribochemical and micellar aspects of cutting fluids (2004) Tribology International, 38 (1), pp. 1-4Ren, Y.H., Zhang, B., Zhou, Z.X., Specific energy in grinding of tungsten carbides of various grain sizes (2009) CIRP Annals - Manufacturing Technology, 58 (1), pp. 299-302Sadeghi, M.H., Hadad, M.J., Tawakoli, T., Emami, M., Minimal quantity lubrication-MQL in grinding of Ti-6Al-4V titanium alloy (2009) International Journal of Advanced Manufacturing Technology, 44 (5), pp. 487-500Salmon, S.C., (1992) Modern Grinding Process Technology, , McGraw-Hill, New YorkSilva, L.R., Bianchi, E.C., Fusse, R.Y., Catai, R.E., França, T.V., Aguiar, P.R., Analysis of surface integrity for minimum quantity lubricant - MQL in grinding (2007) International Journal of Machine Tools and Manufacture, 47 (2), pp. 412-418Sinot, O., Chevrier, P., Padilla, P., Experimental simulation of the efficiency of high speed grinding wheel cleaning (2006) International Journal of Machine Tools and Manufacture, 46 (2), pp. 170-175Sokovic, M., Mijanovic, K., Ecological aspects of the cutting fluids and its influence on quantifiable parameters of the cutting processes (2001) Journal of Materials Processing Technology, 109 (1-2), pp. 181-189Stanford, M., Lister, P.M., Kibble, K.A., Morgan, C., Investigation into the use of gaseous and liquid nitrogen as a cutting fluid when turning BS 970-80A15 (En32b) plain carbon steel using WC-Co uncoated tooling (2007) Journal of Materials Processing Technology, 209 (2), pp. 961-972Tawakoli, T., Westkaemper, E., Rabiey, W., Dry grinding by special conditioning (2007) International Journal of Advanced Manufacturing Technology, 33 (3-4), pp. 419-424Tawakoli, T., Hadad, M.J., Sadeghi, M.H., Daneshi, A., Stöckert, S., Rasifard, A., An experimental investigation of the effects of workpiece and grinding parameters on minimum quantity lubrication MQL grinding International (2009) Journal of Machine Tools and Manufacture, 49 (12-13), pp. 924-932Tawakoli, T., Hadad, M.J., Sadeghi, M.H., Influence of oil mist parameters on minimum quantity lubrication-MQL grinding process (2010) International Journal of Machine Tools and Manufacture, 50 (6), pp. 521-531Wang, C.M., Cargill, G.S., Chan, H.M., Harmer, M.P., Structure of Y and Zr segregated grain boundaries in alumina (2000) Interface Science, 8 (2-3), pp. 243-255Webster, J.A., Coolant calculus: directing coolant into the right place at the right speed, in the right quantity (2008) Cutting Tool Technology, 60 (2), pp. 58-66Weinert, K., Inasaki, I., Sutherland, J.W., Wakabayashi, T., Dry machining and minimum quantity lubrication (2004) CIRP Annals - Manufacturing Technology, 53 (2), pp. 511-537Yoshimura, H., Itoigawa, F., Nakamura, T., Niwa, K., Development of nozzle system for oil-on-water droplet metalworking fluid and its application on practical production line (2005) JSME International Journal Series C, 48 (4), pp. 723-729