Lubrication Fundamentals 2011 Part 10 ppsx

... may occur both on parts covered by oil and on parts above the oil level. In either case, in addition to damage to the metal surfaces, rusting is harmful for a number of reasons. Particles of rust ... Rights Reserved. Figure 13.12 Bulb turbine installation. II. LUBRICATED PARTS The main parts of hydraulic turbines requiring lubrication are the turbine and generator bearings, the guide vane b...

Ngày tải lên: 11/08/2014, 10:23

... type Naphthenic Paraffinic Viscosity SUS at 100 ЊF (cSt at 38ЊC) a 100 (20.53) 100 (20.53) Pour point, ЊF(ЊC) מ50 (מ45.5) 0 (מ18) Viscosity index 15 100 Flash point, ЊF(ЊC) 340 (171) 390 (199) Gravity, ... 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:...

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

... 6.8 6.12 7.48 ISO VG 10 10 9.00 11.0 ISO VG 15 15 13.5 16.5 ISO VG 22 22 19.8 24.2 ISO VG 32 32 28.8 35.2 ISO VG 46 46 41.4 50.6 ISO VG 68 68 61.2 74.8 ISO VG 100 100 90.0 110 ISO VG 150 150 135 ... and grade (cP, max) b yield stress) c 100 ЊC min d at 100 ЊC max d 10 6 s ؊2 , min e 0W 3250 at מ30 60 000 at מ40 3.8 — — 5W 3500 at מ25 60 000 at מ35 3.8 — — 10W 3500 at מ20 60 000 at מ3...

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... kW 10. 5 kW 11 kW Rpm 2100 2100 1800 2200 2250 Oil capacity 6.0 liters 6.0 liters 6.8 liters 3.2 liters 3.0 liters Test duration 252 h 252 h 360 h 50 h 50 h Oil temperature 107 ЊC 107 ЊC 130ЊC 110 C90ЊC Copyright ... 325–350 205–220 275–290 Dropping point (ЊC) 110 163–177 96 104 135–143 Maximum usable 175 250 200 230 temperature (ЊF) Maximum usable 79 121 93 110 temperature (ЊC) Water re...

Ngày tải lên: 11/08/2014, 10:23

... force is generated by a 100 lb weight and the area is 10 in. 2 , the pressure is 10 psi (pounds per square inch). So p ס F/A (in this example it is 100 lb divided by 10 in. 2 ס 10 psi). The pressure ... multiplier). Figure 7.2 shows that a 10 lb force acting on a 1 in. 2 piston develops the same pressure as a 100 lb weight acting on a 10 in. 2 piston. The 10 psi pressure is e...

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...

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... velocity מ40 to 10 10 to 10 10 to 35 35 to 55 of final reduction stage a,b (מ40 to ם14) (14 to 50) (50 to 95) (95 to 131) Less than 5 m/s (100 0 ft/min) h 3S 4 6 8 5–15 m/s (100 0–3000 ft/min) ... 9 S 10 2880–3520 — 10 EP 10 S 11 4140–5060 — 11 EP 11 S 12 6120–7480 — 12 EP 12 S 13 190–220 cSt at — 13 EP 13 S 100 ЊC (212ЊF) e Residual compounds f Viscosity ranges AGMA lube no. [cSt a...

Ngày tải lên: 11/08/2014, 10:23

... engines present a variety of lubrication challenges, certain factors affecting lubrication are more or less common to all reciprocat- ing engines. The primary objectives of lubrication of reciprocating ... approximately 800 100 0 SUS at 100 ЊF (173–216 cSt at 38ЊC). If ambient temperatures are much below 70ЊF (21ЊC), heat is likely to be needed to reduce the oil’s effective viscosity....

Ngày tải lên: 11/08/2014, 10:23

... test requirements CA DG MIL-L- 2104 A CRC L-38 Caterpillar L-1 (0.4% sulfur) a CB DM MIL-L- 2104 A, CRC L-38 Supplement 1 Caterpillar L-1 (0.4% sulfur) CC DM MIL-L- 2104 B CRC L-38 MIL-L-45152B Sequence ... jetted through calibrated orifices to parts requiring lubrica- tion and cooling, including bearings, contact seals, and gears. The oil flows by gravity from these parts to sumps from which...

Ngày tải lên: 11/08/2014, 10:23