Lubrication Fundamentals 2011 Part 12 potx

... PF821XL Massey-Ferguson M1110 a M 1127 A a M 1127 B a M 1129 A a White Farm M1135 M1139 M1141 Q1826 John Deere J14C a J20C J20D J21A a J27 Case MS 120 4 a MS 120 5 a MS 120 6 a MS 120 7 MS 121 0 Hy-Tran a New Holland ... equipment operates at least part of the time under wet or humid conditions. Breathing of this moisture into the lubrication systems can cause rust and corrosion of f...

Ngày tải lên: 11/08/2014, 10:23

... 5.6 — — 25W 6000 at מ 560000 at מ15 9.3 — — 20 — — 5.6 Ͻ 9.3 2.6 30 — — 9.3 Ͻ 12. 5 2.9 40 — — 12. 5 Ͻ 16.3 2.9 f 40 — — 12. 5 Ͻ 16.3 3.7 g 50 — — 16.3 Ͻ 21.9 3.7 60 — — 21.9 Ͻ 26.1 3.7 a All values ... subjected. Additives are chemical compounds added to lubricating oils to impart specific prop- erties to the finished oils. Some additives impart new and useful properties to the lubricant,...

Ngày tải lên: 11/08/2014, 10:23

... noninteracting particles. The interaction is slowly turned on to the particles gradually become quasiparticles. The methods described above can be directly applied for the quasiparticles. Using ... trace Ξ = e −βΩ = Tre −β ˆ K , (120 ) and its corresponding statistical density matrix in the form ˆ ρ = e −β ˆ K Ξ = e β ( Ω− ˆ K ) . (121 ) Armed with Eqs. (120 ) and (121 ), all the thermodynami...

Ngày tải lên: 19/06/2014, 11:20

... by oxidation processes between the lubrication and the moving and stationary partners (3) →(1), (2), can distinctly influence the mechanisms of mixed and boundary lubrication. Tribological Characteristics Characteristics ... aluminum bearings. Plasma-sprayed oxide coatings are particularly effective for hard surfacing aluminum and titanium alloys as long as solid particle erosion or impac...

Ngày tải lên: 05/08/2014, 09:20

... 24 .12 Floating-ring seal. (Source: Lebeck, A. O. 1991. Principles and Design of Mechanical Face Seals. John Wiley & Sons, New York. With permission.) The floating-ring seal in Fig. 24 .12 ... (a suspension of iron particles in a special liquid) within the magnetic flux field, as shown. The fluid creates a continuous bridge between the rotating and nonrotating parts at all times and ....

Ngày tải lên: 11/08/2014, 10:22

... industry, especially for those participating in the quest to develop the new lubri- cant molecule for the future. D. M. Pirro A. A. Wessol ACKNOWLEDGMENTS Lubrication Fundamentals: Second Edition, ... Sulfur VI API group I (solvent-refined) Ͻ 90 Ͼ 0.03 80 120 API group II (hydroprocessed) Ն 90 Յ 0.03 80 120 API group III Ն 90 Յ 0.03 Ն 120 API group IV is polyalphaolefins API group V is...

Ngày tải lên: 11/08/2014, 10:23

... Rights Reserved. Table 4.3 Grease Compatibility Guidelines a Calcium Lithium Aluminum 12- hydroxy- Calcium 12- hydroxy- Lithium complex Barium Calcium steric acid complex Clay Lithium steric acid ... I X C I C C B C I Calcium 12- hydroxy- C C C X B C C C C I steric acid Calcium I I I B X I I I C C complex Clay I I C C I X I I I I Lithium I I C C I I X C C I Lithium 12- hydroxy- I I B C I...

Ngày tải lên: 11/08/2014, 10:23

... be an important part of the development of EA lubricants. Unlike traditional lubricant development, where the predominant focus is on product performance in equipment, a major part of developing ... for screw-type refrigeration compres- sors operating on R12 and hydrocarbon gases, and compressors handling hydrocarbon gases. (The use of R12, a potential ozone layer depleting substance, is...

Ngày tải lên: 11/08/2014, 10:23

... time. Thin film lubrication includes mixed film and boundary lubrication. 3. Solid films are more or less permanently bonded onto the moving surfaces. A. Fluid Films Fluid film lubrication is ... ‘‘elasto’’ part of the term referring to the requirement that elastic deformation of the surfaces occur before the film can be formed. This type of lubrication is called elastohydrodynamic...

Ngày tải lên: 11/08/2014, 10:23

... industry, particularly where stick–slip characteristics can contrib- ute to reduced precision of machined parts. 1. Grease Lubrication On some machine tools, grease is used for the lubrication ... boundary type. The simplest type of all-loss lubrication is hand oiling (see Figure 8.19). Hand oiling results in flooded clearances immediately after lubrication. This condition may permit f...

Ngày tải lên: 11/08/2014, 10:23