Maintenance Fundamentals Episode 2 part 10 ppsx

... Design D (mm) 170 150 B/D 1.0 1.4 p (N/mm 2 ) 3.0 2. 8 v (m/s) 139 (167) 122 (146) T max (°C) 1 32 (141) 121 (130) Values in parentheses refer to overspeed 120 %. m p , m G = Poisson ratio for pinion ... speed: n = 6380/15,574 rpm Overspeed 120 %: n = 7656/18,689 rpm Nominal pitch line velocity: v = 20 0 m/s Overspeed plv.: v = 24 0 m/s Center distance: a = 422 mm Two sets of gearwheel...

Ngày tải lên: 21/07/2014, 16:22

... (aerospace), piston rings, valves Bearings and seals, piston rings, cylinders liners, and crosshead pins in internal combustion engines and compressors, cannon and gun tubes, metalworking tools, tape-path ... generated in a contact pro- blem such as a semi-infinite cylinder rolling and sliding over a semi-infinite planar surface. As discussed in Chapter 5, Rashid an...

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 11:20

... is shown in Figure 10 .13 . Figure 10 .10 Typical elastomeric couplings. Keith Mobley /Maintenance Fundamentals Final Proof 15 .6.2004 7:35pm page 18 1 Couplings 18 1 Figure 10 .16 shows various key ... single-flex Figure 10 .11 Typical metallic-grid couplings. Figure 10 .12 Typical floating-shaft or spacer couplings. Keith Mobley /Maintenance Fundamentals Final Proof 15 ....

Ngày tải lên: 05/08/2014, 12:20

... 9- 1 ⁄ 2 857 1- 1 ⁄ 2 3.38 5- 1 ⁄ 2 16 6.4 10 10 00 1- 3 ⁄ 4 5.36 5- 3 ⁄ 4 19 0 .1 10- 1 ⁄ 2 11 57 2 8.00 6 21 6 11 13 31 2- 1 ⁄ 4 11 .39 6- 1 ⁄ 4 24 4 11 - 1 ⁄ 2 1 520 2- 1 ⁄ 2 15 .63 6- 1 ⁄ 2 275 12 1 728 2- 3 ⁄ 4 20 .80 ... 7- 1 ⁄ 2 00 1- 3 ⁄ 4 5 ⁄ 8 1- 3 ⁄ 4 Â 1 ⁄ 4 7- 9 ⁄ 16 to 9 00 2 3 ⁄ 4 2 Â 1- 3 ⁄ 4 9- 1...

Ngày tải lên: 05/08/2014, 12:20

... symmetrical. FREQUENCY GEARMESH AMPLITUDE Figure 11. 32 Wear or excessive clearance changes side band spacing. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7:38pm page 22 2 22 2 Maintenance Fundamentals In addition ... gears are properly installed. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7:38pm page 22 6 22 6 Maintenance Fundamentals...

Ngày tải lên: 05/08/2014, 12:20

... atmosphere of pressure, the error Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7:42pm page 23 6 23 6 Maintenance Fundamentals within a 120 -degree arc, this type of compressor generates higher ... 12. 8 Liquid-seal ring rotary air compressor. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7:42pm page 24 2 24 2 Maintenance Fundamentals betwe...

Ngày tải lên: 05/08/2014, 12:20

... compressor’s cylinders or casing out of alignment. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7 :42 pm page 25 4 25 4 Maintenance Fundamentals 13 CONTROL VALVES Control valves can be grouped ... In part, the increased level of vibration is caused by the impact as each piston reaches top dead center and Keith Mobley /Maintenance Fundamentals Final Proof 15...

Ngày tải lên: 05/08/2014, 12:20

... Strand (Inches) 12X6 0.40 60 31 .5 4.0 15X6 0.49 73 41 .5 5.0 18X6 0 .56 84 5. 0 6.0 24 X8 1.16 174 10.0 30X10 1.60 24 0 14.0 36X 12 2.40 360 16.0 Keith Mobley /Maintenance Fundamentals Final Proof 15. 6 .20 04 5: 58pm ... Applications Inclination, degrees 10 15 20 25 30 35 Reduction in capacity, % 10 26 45 58 70 78 Keith Mobley /Maintenance Fundamentals Final Proof 15. 6 ....

Ngày tải lên: 05/08/2014, 12:20

... Mobley /Maintenance Fundamentals Final Proof 15 .6 .20 04 6: 02pm page 3 06 3 06 Maintenance Fundamentals Table 15 .2 Air-Density Ratios Keith Mobley /Maintenance Fundamentals Final Proof 15 .6 .20 04 6: 02pm ... Mobley /Maintenance Fundamentals Final Proof 15 .6 .20 04 5:58pm page 29 8 29 8 Maintenance Fundamentals 0.4 0 .6 0.8 1.0 1 .2 1.4 1 .6 1.8 CFM, THOUSAN...

Ngày tải lên: 05/08/2014, 12:20

... rate. A vendor Figure 17. 1 Centrifugal pump. Figure 17 .2 Single and double volute. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6:12pm page 3 32 3 32 Maintenance Fundamentals 16 DUST ... finer particles) following eddy current Figure 16 .2 Flow pattern through a typical cyclone separator. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6:07pm...

Ngày tải lên: 05/08/2014, 12:20

... fixed volume of fluid for each Figure 17 .21 Lobe-type pump. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6:12pm page 3 52 3 52 Maintenance Fundamentals Protection Positive-displacement ... by the characteristic curve for the pump. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6:12pm page 3 42 3 42 Maintenance Fundamentals Impellers Impellers...

Ngày tải lên: 05/08/2014, 12:20

... properly. Table 17 .2 Common Failure Modes of Rotary-Type, Positive-Displacement Pumps Source: Integrated Systems, Inc. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6:12pm page 3 62 3 62 Maintenance ... Traps Source: Integrated Systems, Inc. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 7:39pm page 3 72 3 72 Maintenance Fundamentals Table 17...

Ngày tải lên: 05/08/2014, 12:20

... of maintenance  100 Manufacturing cost 14. Maintenance Cost Percentage of Sales Total maintenance cost  100 Dollar value of sales 15. Cost of Maintenance Hour Total cost of maintenance  100 ... (usually Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6 :28 pm page 3 92 3 92 Maintenance Fundamentals 16. Breakdown Cost Component (period) Total breakdown...

Ngày tải lên: 05/08/2014, 12:20

... double decomposition with another compound, Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6 :28 pm page 4 02 4 02 Maintenance Fundamentals prevent shaft wear. Also referred to as a ‘‘packed ... of very short duration. Sump A pit or tank. Keith Mobley /Maintenance Fundamentals Final Proof 15.6 .20 04 6 :28 pm page 4 12 4 12 Maintenance Fundamentals either she...

Ngày tải lên: 05/08/2014, 12:20