A pair of 20°, mild-steel gears are to be selected for an application where they need to transfer 5 hp. The pinion drives at 1800 rpm and the gear must rotate as close to 480 rpm as possible. Select a set of gears to accomplish this task.a) Determine a suitable diametral pitch and pressure angle.b) Use the required velocity ratio to iterate and determine appropriate number of teeth (confirm that these gears are commercially available).c) Calculate the pitch diameters and center distance. 32 Diametral Pitch1216202836486480112141824324056729612824 Diametral Pitch12182430425472961441521273648608412020 Diametral Pitch121624355080100160141825406084120180152030457090140200 16 Dlametral Pitch1216243248649616014182836567212819215203040608014412 Diametral Pitch121520284260841201681316213048669613219214182436547210814421610 Diametral Pitch12162430455580120200141825354860901401520284050701001608 Diametral Pitch1216223244608011214182436486488120152028405672961286 Diametral Pitch121624334866961418273654721081521304260841205 Diametral Pitch1216243045701101601418253550801201801520284060100140

GIVEN: A pair of 20°, mild-steel gears Which transfer 5 hp, The pinion drives at 1800 rpm the gear…

A pair of 20°, mild-steel gears are to be selected for an application where they need to transfer 5 hp. The pinion drives at 1800 rpm and the gear must rotate as close to 480 rpm as possible. Select a set of gears to accomplish this task. a) Determine a suitable diametral pitch and pressure angle. b) Use the required velocity ratio to iterate and determine appropriate number of teeth (confirm that these gears are commercially available). c) Calculate the pitch diameters and center distance.

A pair of 20°, mild-steel gears are to be selected for an application where they need to transfer 5 hp. The pinion drives at 1800 rpm and the gear must rotate as close to 480 rpm as possible. Select a set of gears to accomplish this task. a) Determine a suitable diametral pitch and pressure angle. b) Use the required velocity ratio to iterate and determine appropriate number of teeth (confirm that these gears are commercially available). c) Calculate the pitch diameters and center distance.

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Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.2P: 5.2 Evaluate the Prandtl number from the following data: , .

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Concept explainers

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.

Question

a) Determine a suitable diametral pitch and pressure angle.

b) Use the required velocity ratio to iterate and determine appropriate number of teeth (confirm that these gears are commercially available).

c) Calculate the pitch diameters and center distance.

32 Diametral Pitch
12
16
20
28
36
48
64
80
112
14
18
24
32
40
56
72
96
128
24 Diametral Pitch
12
18
24
30
42
54
72
96
144
15
21
27
36
48
60
84
120
20 Diametral Pitch
12
16
24
35
50
80
100
160
14
18
25
40
60
84
120
180
15
20
30
45
70
90
140
200

16 Dlametral Pitch
12
16
24
32
48
64
96
160
14
18
28
36
56
72
128
192
15
20
30
40
60
80
144
12 Diametral Pitch
12
15
20
28
42
60
84
120
168
13
16
21
30
48
66
96
132
192
14
18
24
36
54
72
108
144
216
10 Diametral Pitch
12
16
24
30
45
55
80
120
200
14
18
25
35
48
60
90
140
15
20
28
40
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8 Diametral Pitch
12
16
22
32
44
60
80
112
14
18
24
36
48
64
88
120
15
20
28
40
56
72
96
128
6 Diametral Pitch
12
16
24
33
48
66
96
14
18
27
36
54
72
108
15
21
30
42
60
84
120
5 Diametral Pitch
12
16
24
30
45
70
110
160
14
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35
50
80
120
180
15
20
28
40
60
100
140

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