Mitsubishi Electric HR Series, Instruction Manual

Page: 11 / 34

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(2) Use an arm-type pulley that has a ventilation hole so that the pulley does not obstruct the
ventilation cooling. Provide as large as possible of a ventilation hole if a flat plate type is to be used.
(Refer to Fig. 5.)
(3) The V-Belt speed is as follows.
Standard V-belt max. 30m/s (Max. pulley diameter for 4-pole motor is 320.)
Narrow V-belt max. 40m/s (Max. pulley diameter for 4-pole motor is 425.)
(4) Select the gear-ratio so that the contact angle ø of the belt and pulley is 140° or higher.
(Refer to Fig. 4.)
Table 4 Application of V-belt and V-pulley and the deflection force for standard motors
(Contact angle 140°)
Rate
output
kW
No. of
poles
Standard V-belt Narrow V-belt
Model No. of
belts
Pulley Deflection force Td (N/pcs)
Model No. of
belts
Pulley Deflection force, Td (N/pcs)
Nominal
diameter
(min.
value)
Width
(max.
value)
For new belt
For
retensioning
Nominal
diameter
(min.
value)
Width
(max.
value)
For new belt
For
retensioning
0.2
0.4
0.75
1.5
2.2
3.7
5.5
7.5
2
2
2
2
2
2
2
2
A
A
A
A
A
A
A
A
1
1
1
2
2
3
3
3
75
75
80
80
90
90
112
132
20
20
20
35
35
50
50
50
2.9 to 3.4
4.4 to 5.4
6.9 to 7.8
7.8 to 8.8
9.8 to 11
9.8 to 12
13 to 15
15 to 18
2.5 to 2.9
3.4 to 4.4
5.4 to 6.9
5.9 to 7.8
7.8 to 9.8
7.8 to 9.8
9.8 to 13
12 to 15
3V
3V
3V
3V
3V
3V
3V
3V
1
1
1
1
1
2
3
4
71
71
71
75
75
75
75
80
17.4
17.4
17.4
17.4
17.4
27.7
38.0
48.3
2.9 to 3.4
4.4 to 4.9
6.9 to 7.8
13 to 15
18 to 21
16 to 18
16 to 18
15 to 18
2.5 to 2.9
3.4 to 4.4
5.9 to 6.9
9.8 to 13
14 to 18
13 to 16
13 to 16
12 to 15
0.2
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37
45
55
75
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
A
A
A
A
A
A
B
B
B
B
B
B
C
C
C
C
C
1
1
1
2
2
3
3
3
4
5
5
5
5
6
6
7
8
75
75
80
90
100
112
125
150
160
170
200
224
224
224
265
265
315
20
20
20
35
35
50
63
63
82
101
101
101
136
161.5
161.5
187
212.5
3.9 to 4.4
6.9 to 7.8
11 to 13
11 to 12
14 to 16
14 to 16
19 to 22
22 to 25
23 to 25
24 to 26
25 to 28
27 to 31
39 to 45
40 to 46
44 to 51
46 to 53
51 to 59
2.9 to 3.9
5.4 to 6.9
8.8 to 11
7.8 to 11
11 to 14
11 to 14
15 to 19
17 to 22
18 to 23
18 to 24
20 to 25
22 to 27
30 to 39
31 to 40
34 to 44
36 to 46
39 to 51
3V
3V
3V
3V
3V
3V
3V
3V
3V
3V
3V
3V
5V
5V
5V
5V
5V
1
1
1
2
2
2
3
3
4
6
6
6
4
4
4
5
6
71
71
71
75
75
100
100
125
125
125
140
160
180
200
224
224
250
17.4
17.4
17.4
27.7
27.7
27.7
38.0
38.0
48.3
68.9
68.9
68.9
77.9
77.9
77.9
95.4
112.9
3.9 to 4.4
6.9 to 7.8
13 to 15
13 to 15
18 to 21
23 to 25
22 to 25
24 to 27
26 to 30
24 to 27
26 to 30
27 to 31
52 to 60
58 to 67
63 to 73
62 to 71
64 to 74
2.9 to 3.9
5.4 to 6.9
9.8 to 13
9.8 to 13
14 to 18
18 to 23
17 to 22
19 to 24
21 to 26
19 to 24
21 to 26
22 to 27
41 to 52
45 to 58
49 to 63
48 to 62
50 to 64
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37
45
55
75
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
A
A
A
A
B
B
B
B
B
C
C
C
C
C
C
D
1
2
2
3
3
3
4
5
5
4
5
5
6
7
8
6
80
80
100
100
125
150
150
170
224
224
224
265
265
280
300
355
20
35
35
50
63
63
82
101
101
110.5
136
136
161.5
187
212.5
233
8.8 to 9.8
8.8 to 9.8
14 to 16
13 to 15
18 to 21
23 to 25
23 to 25
24 to 27
25 to 29
39 to 45
38 to 43
44 to 51
45 to 52
45 to 52
46 to 53
78 to 90
6.9 to 8.8
6.9 to 8.8
11 to 14
11 to 13
14 to 18
18 to 23
18 to 23
19 to 24
20 to 25
30 to 39
29 to 38
34 to 44
35 to 45
35 to 45
36 to 46
61 to 78
3V
3V
3V
3V
3V
3V
3V
3V
3V
5V
5V
5V
5V
5V
5V
5V
1
1
2
2
3
3
4
5
6
3
4
4
4
5
6
6
71
75
75
90
100
140
140
140
160
180
180
224
224
224
250
315
17.4
17.4
27.7
27.7
38.0
38.0
48.3
58.6
68.9
60.4
77.9
77.9
77.9
95.4
112.9
112.9
9.8 to 12
18 to 20
18 to 21
22 to 25
22 to 25
24 to 26
24 to 27
27 to 31
27 to 31
62 to 71
55 to 64
61 to 70
74 to 84
72 to 82
67 to 77
73 to 83
7.8 to 9.8
14 to 18
14 to 18
17 to 22
17 to 22
19 to 24
19 to 24
22 to 27
22 to 27
48 to 62
43 to 55
47 to 61
57 to 74
56 to 72
52 to 67
57 to 73
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37
45
8
8
8
8
8
8
8
8
8
8
8
8
8
A
A
A
B
B
B
B
C
C
C
C
C
C
2
3
3
3
4
5
5
4
5
5
6
7
7
80
95
112
132
150
150
200
224
224
250
265
280
315
35
50
50
63
82
101
101
110.5
136
136
161.5
187
187
11 to 13
13 to 15
16 to 18
23 to 25
22 to 25
24 to 27
26 to 30
40 to 46
40 to 46
43 to 49
46 to 53
46 to 53
51 to 58
8.8 to 11
9.8 to 13
12 to 16
18 to 23
17 to 22
19 to 24
21 to 26
31 to 40
31 to 40
33 to 43
36 to 46
36 to 46
39 to 51
3V
3V
3V
3V
3V
3V
3V
5V
5V
5V
5V
5V
5V
2
2
3
3
4
5
6
3
4
4
5
5
6
75
80
90
125
140
140
160
180
180
200
224
250
250
27.7
27.7
38.0
38.0
48.3
58.6
68.9
60.4
77.9
77.9
95.4
95.4
112.9
13 to 14
23 to 25
20 to 23
24 to 26
24 to 26
25 to 28
26 to 30
66 to 76
61 to 70
65 to 75
64 to 73
70 to 80
71 to 81
9.8 to 13
18 to 23
15 to 20
18 to 24
18 to 24
20 to 25
21 to 26
51 to 66
47 to 61
51 to 65
50 to 64
55 to 70
55 to 71