MGM
9
Tolerances
GENERAL CHARACTERISTICS
Notes: *
This type of flange requires a special shaft therefore it isn’t interchangeable with the standard one. This flange increases the motor length (Q) by 25mm.
**
This type of flange requires a non standard bearing while the shaft remains the standard one.
***
The difference between the
dimension of the reduced flange and the standard one (in brackets) doesn’t affect the correct motor assembly.
Nema sizes motors are available on request.
Shaft drive end dimension (DxE) (mm)
Flange type
Flange dimension (P/M/N) (mm)
9x20
B5 (standard)
120/100/80
9x20
B14 (standard)
80/65/50
11x23
B5 (standard)
140/115/95
11x23
B14 (standard)
90/75/60
11x23
B14-R (56)
(80) 90/65/50 ***
14x30
B5 (standard)
160/130/110
14x30
B5-R (56)*
120/100/80
14x30
B5-R/M (63)*
140/115/95
14x30
B5-M
200/165/130
14x30
B14 (standard)
105/85/70
14x30
B14-R
(90) 105/75/60 ***
19x40
B5 (standard)
200/165/130
19x40
B5-R
160/130/110
19x40
B14
120/100/80
19x40
B14-R
(105) 120/85/70
***
24x50
B5 (standard)
200/165/130
24x50
B5-R
160/130/110
24x50
B14 (standard)
140/115/95
24x50
B14-R
(120) 140/100/80 ***
28x60
B5 (standard)
250/215/180
28x60
B5-R **
200/165/130
28x60
B14 (standard)
160/130/110
28x60
B5 (standard)
250/215/180
28x60
B14 (standard)
160/130/110
38x80
B5 (standard)
300/265/230
38x80
B5-R
250/215/180
38x80
B14 (standard)
200/165/130
42x110
B5 (standard)
350/300/250
48x110
B5 (standard)
350/300/250
55x110
B5 (standard)
400/350/300
60x140 (4/6/8 Poles)
B5 (standard)
450/400/350
55x110 (2 Poles)
B5 (standard)
450/400/350
65x140 (4-6-8 Poles)
B5 (standard)
550/500/450
75x170 (4-6-8 Poles)
B5 (standard)
550/500/450
Motor frame size
IEC 56
IEC 56
IEC 63
IEC 63
IEC 63
IEC 71
IEC 71
IEC 71
IEC 71
IEC 71
IEC 71
IEC 80
IEC 80
IEC 80
IEC 80
IEC 90
IEC 90
IEC 90
IEC 90
IEC 100
IEC 100
IEC 100
IEC 112
IEC 112
IEC 132
IEC 132
IEC 132
IEC 160
IEC 180
IEC 200
IEC 225
IEC 225
IEC 250
IEC 280
B5
N
P
M
B14
N
P
M
D
E
The table below, describes the electromechanical tolerances concerning electric motors, according to the EN 60034-1 standard.
Electromechanical Characteristics
Locked Rotor Current
Moment of Inertia
Efficiency
Power Factor
cos
ϕ
– 0.15 (1 -
η
)
Rated power
≤
150 kW
Locked Rotor Torque
– 15%
of the guarateed value
+25%
of the guarateed value (Upon request it is possibile to exceed the +25% value)
Slip
±
30%
Rated power <1kW
±
20%
Rated power
≥
1kW
+20%
±
10%
of the guarateed value
Parameter
Tolerance
– (1 - cos
ϕ
) / 6
min 0,02 - max 0,07
The table below describes the mechanical tolerances.
Mechanical tolerances
Flange Spigot
j6
for motors up to 132 frame size
h6
for motors of 160 frame size and above
Shaft End Diameter
j6
from 9 mm up to 28 mm
k6
from 38 mm up to 48 mm
m6
from 55 mm up to 75 mm
Dimension
Tolerance
The table below shows the dimension of the standard and special flange and shaft sorted by frame size.
Standard and special
flange
Shaft Height
-0.5 mm
for motors up to 250 frame size
-1.0 mm
for motors of 280 frame size and above