GB/T 4772.2-1999 Dimensions and output power classes of rotating electrical machines Part 2: Frame sizes 355 to 1 000 and flange sizes 1 180 to 2 360
Some standard content:
GBGB4772.2-199
GB/T4772 "Dimensions and output power levels of rotating electrical machines" includes the following three parts: Part 1 (GB/T4772.1): Frame size 56~400 and flange size 55~1080; Part 2 (GB/T4772.2): Frame size 355~1000 and flange size 1180~2360; Part 3 (GB/T4772.3): Flange size BF10~BF50 for small power built-in motors. This standard is Part 2 of GB/T4772 "Dimensions and output power levels of rotating electrical machines". This standard is equivalent to IEC72-2:1990 "Dimensions and output power levels of rotating electrical machines Part 2
and flange size 1180~2360".
After implementation, this standard will replace GB/T4772.2-1984 "Electric Motor Dimensions and Tolerances" and GB/T4826-1984 "Electric Motor Power Levels". This standard was proposed by the State Machinery Industry Bureau. This standard is under the jurisdiction of the National Technical Committee for Standardization of Rotating Electric Machines. This standard was drafted by the Harbin Large Electric Machine Research Institute. The main drafters of this standard are Yang Xiaolin, Fu Changhong, and Qu Zufang. Frame size 355~1000
Electric motors with frame size 355~1000" and
GB/T4772.2-1999
IEC Foreword
1) IEC's formal resolutions or agreements on technical issues are made by technical committees represented by representatives of all countries that are particularly concerned about the technical issues. These resolutions or agreements try to achieve an international consensus on the issues involved. 2) These resolutions or agreements are applied internationally in the form of recommended standards and are accepted by national committees in this sense. 3) In order to promote international unification, IEC hopes that all international committees will adopt IEC recommended standards as their national standards when national conditions permit. Any differences between IEC recommended standards and corresponding national standards should be clearly indicated in the latter as much as possible. International standard IEC72-2 was formulated by IEC TC2 (rotating motors) SC2B (installation dimensions and power levels). IEC72-2 replaces IEC72A (1970)
The content of this standard is based on the following documents:
June Rules
2B (CO) 69
All voting materials for this standard can be found in the above documents. IEC72-2 references the following standards:
IEC34-8:1972 Rotating electrical machines - Terminal marking and direction of rotation voting report
2B(CO)72
IEC72-1:1990 Dimensions and output series for rotating electrical machines Part 1: Frame sizes 56 to 400 and flange sizes 55 to 1080 ISO496:1973
Driving and driven machines - Shaft height
IS01101:1983 Technical drawings - Geometrical tolerances - Tolerances of form, orientation, position and run-out - General rules, definitions, symbols, markings on drawings
National Standard of the People's Republic of China
Dimensions and output series for rotating electrical machines
Part 2: Frame sizes 355 to 1000 and
Flange sizes 1180 to 2360
Dimensions and output series for rotating electrical machines machinesGB/T4772.2—1999
idtIEC72-2:1990
Replaces GB/T4772.2—1984
GB/T4826—1984
Part 2: Frame numbers 355 to 1000 and flange numbers 1180 to 23601 Scope
This standard applies to all types of horizontal rotating electrical machines of one of the following three special types: foot-down motors, foot-up motors and motors with an integral base plate, as well as motors with mounting flanges and center heights converted to foot-down types of 355 to 1000 mm and fixed flange base diameters of 1180 to 2360 mm.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB1971-1980 Motor terminal marking and direction of rotation GB/T4772.1-1999 Rotating electrical machine dimensions and output power classes Part 1: Frame size 56~400 Flange size 55~1080 (idtIEC72-1:1991)
GB/T1182-1996
General rules, definitions, symbols and drawing representations for shape and position tolerances (eqvISO1101:1996) GB/T12217-1990 Machine shaft height (neqISO496:1973) 3 Dimension symbols
See Chapter 8 for dimension diagrams. The meanings of the symbols used are as follows: A—the distance between the axes of the through holes of the foot bolts (end view); AA—the width of the foot (end view);
the distance between the outer edges of the foot (end view);
the diameter of the motor;
the distance from the center line of the motor to the edge of the terminal box or other most protruding parts fixed on the side of the motor; the distance between the axes of the through holes of the foot bolts (side view); the length of the foot (side view);
the distance between the outer edges of the foot (side view);
-the distance from the shoulder of the shaft at the D end to the axis of the nearest through hole of the foot bolt; CA
-the distance from the shoulder of the shaft at the N end to the axis of the nearest through hole of the foot bolt. Distance; D—D end shaft extension diameter;
-N end shaft extension diameter;
Approved by the State Administration of Quality and Technical Supervision on February 26, 1999 and implemented on September 1, 1999
E—D end shaft extension length from the shaft shoulder;
EA—N end shaft extension length from the shaft shoulder; -D end shaft extension keyway width;
FA—N end shaft extension keyway width;
GB/T4772.2—1999
-D end shaft extension from the bottom of the keyway to the outer cylindrical surface opposite the shaft extension; -D end shaft extension from the key top surface to the outer cylindrical surface opposite the shaft extension; GA| |tt||-The distance from the bottom of the keyway of the N-end shaft extension to the outer cylindrical surface opposite to the shaft extension;-The distance from the top of the key to the outer cylindrical surface opposite to the shaft extension of the D-end shaft extension;-The height of the key of the D-end shaft extension;
-The depth from the outer cylindrical surface of the D-end shaft extension to the bottom of the keyway;-The height of the key of the N-end shaft extension;
-The depth from the outer cylindrical surface of the N-end shaft extension to the bottom of the keyway;H--The distance from the center line of the motor shaft to the bottom surface of the motor foot (basic size);HI
The distance from the center line of the motor shaft to the mounting surface, which refers to the type of motor foot elevation; Foot thickness;
The distance from the top surface of the horizontal motor to the bottom surface of the foot installed on the lifting ring and wiring on the top of the motor The distance from the top surface of the box or other most protruding parts to the bottom surface of the foot; the distance from the bottom surface of the foot to the lowest point of the upper foot type motor; the diameter of the foot through hole or the width of the oblong hole; the total length of the single-axis extension motor;
flange thickness;
the distance from the flange mounting surface to the motor end face; the total length of the motor when there is a shaft extension at the N end;
the diameter of the base circle of the flange mounting hole;
the diameter of the flange stop;
the outer diameter of the flange, if it is not circular, it is twice the maximum radius size; the distance from the flange mounting surface to the shaft shoulder;
S——the nominal diameter of the flange bolt through hole or screw hole; T——the height of the flange stop.
Note: The definition of D terminal and N terminal is shown in GB1971. 4 Motor size marking
4.1 Motor with foot
Use the symbols H, H', A, BC, D and E (in mm) to indicate the frame size and shaft extension size. H(A/B/C)D/E or H/H(A/B/c)D/E. For example: 710(1180/1800/280)130/2004.2 Motor with flange
Use the symbols M, S, D and E (in mm) to indicate the flange and shaft extension size. If the flange has a stopper, add FF before the number of bolt through holes. If the flange does not have a stopper, add FD. Its form is as follows: flange stop is FFM (number of bolt holes/S) D/E: flange without stop is FDM (number of bolt holes/S) D/E: For example: FF1500 (12/28) 130/200. 4.3 Motors with feet and flanges
Combined with 4.1 and 4.2, the following provisions are made:
GB/T4772.2—1999
H(A/B/C)FFM (number of bolt holes/S) D/E. Installation dimensions
are between 5.1 and 5.The recommended values of dimensions H, A, B and C are listed in 4. The values listed in GB/T4772.1 are indicated by underlining. The dimensions of the mounting flange are listed in 5.5.
5.1 Shaft center height
The shaft center height is taken from GB/T12217
(1) Motors with the foot mounting surface lower than the lowest point of the base (lower-foot motor): 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000. (2) Motors with the foot mounting surface higher than the lowest point of the base (upper-foot motor): 0, 160, 250, 315, 400, 500, 630, 800. 5.2
A dimension
Table 1 lists the A dimension values, taken from the R40 numerical system, except for 610mm and 686mm. Table 1
A dimension
Note: For upper foot motors, the A dimension should be selected according to the shaft center height HI corresponding to the lower foot motor. The above assumed H dimension is usually equivalent to the dimension from the shaft center to the lowest point of the motor or the dimension is equal to or closest to the value in the priority number system.
Table 2 lists the B dimension values, all of which use the R20 priority number system. Values different from those listed in Table 2 can be used, but they must be taken from the R20 number system.
B size
90010001120
14001600
9001000
022402500
025002800
I select A size. The above assumed H size is usually equivalent to the shaft center. Note: For upper foot motors, the size corresponding to the shaft center height H of the lower foot motor
to the lowest point of the motor should be used, or this size is equal to or closest to the value in the priority number system. Higher value. 3
5.4C size
C size values are as follows (not related to the shaft center height): GB/T4772.2—1999
0, 100, 224, 250*, 280, 315, 335, 355, 375, 400, 425, 450, 470, 500, 530, 560, 600, 630, 670, 710, 750, 800, 900, 1000.
5.5 Mounting flange dimensions (see Table 3)
Flange number
With stopper
FF1180 (8 or 16/28)
FF1320 (8 or 16/28)
Without stopper
FD1180 (8 or 16/28)
FD1320 (8 or 16/28)
112012 50
12501400
FF1500(12 or 24/28)FD1500(12 or 24/28)170016001800
FF1700(12 or 24/28)FD1700(12 or 24/28)FF1900(12 or 24/35)FD1900(12 or 24/35)1900||tt| |18002000
FF2120(12 or 24/35)FD2120(12 or 24/35)212020002240FF2360(16 or 32/35)FD2360(16 or 32/35)236022402500R
Maximum
Corner radius of stop
Number of through holes
8 or 16| |tt||8 or 16
12 or 24
12 or 24
12 or 24
12 or 24
16 or 32
Number of bolts
1) Hole S is in the exact position based on the nominal size M (precisely concentric with the base circle N), and its tolerance is =2mm (for S=28mm) and =2.5mm (for S=35mm). See GB/T1182.2) Tolerance h8, smaller tolerance h6 can be used with consent. The fit tolerance of the stop is H9 for h8 and H7 for h6.3) Maximum value (no positive tolerance): Take the smaller value, flat surface and cut mouth are allowed. 4) Unless otherwise agreed by the manufacturer and the user, R=0.5) Tolerance is H17, closed or open. With consent, a smaller tolerance zone of H14 may be used. 6) The stopper should be rounded toward the flange surface and chamfered toward the stopper surface. The cylindrical stopper part should have sufficient length. *: In order to be consistent with GB/T4772.1, when H=355mm, the C value should be 254 instead of 250. The values of 200~315 and 800~1000 are taken from the R20 number system, and the values of 315~800 are taken from the R40 number system. 4
GB/T4772.2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series size
+13170130
+13170
+13210
+13210
+13210||tt ||+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper3
B dimension
level values.
Table 2 lists the B dimension values, all using the R20 priority number system. Values other than those listed in Table 2 may be used, but must be taken from the R20 number system.
B dimension
90010001120
14001600
9001000
022402500
025002800
I select the A dimension, the H dimension assumed above usually corresponds to the shaft center height H
of the lower foot motor to the lowest point of the motor or the value of the higher level that is equal to or closest to the value in the priority number system. Note: For upper foot motors, the corresponding
lower foot motor shaft center height H
to the motor lowest point should be used, or this dimension is equal to or closest to the value in the priority number system. 3
5.4C size
C size values are as follows (not related to the shaft center height): GB/T4772.2—1999
0, 100, 224, 250*, 280, 315, 335, 355, 375, 400, 425, 450, 470, 500, 530, 560, 600, 630, 670, 710, 750, 800, 900, 1000.
5.5 Mounting flange dimensions (see Table 3)
Flange number
With stopper
FF1180 (8 or 16/28)
FF1320 (8 or 16/28)
Without stopper
FD1180 (8 or 16/28)
FD1320 (8 or 16/28)
112012 50
12501400
FF1500(12 or 24/28)FD1500(12 or 24/28)170016001800
FF1700(12 or 24/28)FD1700(12 or 24/28)FF1900(12 or 24/35)FD1900(12 or 24/35)1900||tt| |18002000
FF2120(12 or 24/35)FD2120(12 or 24/35)212020002240FF2360(16 or 32/35)FD2360(16 or 32/35)236022402500R
Maximum
Corner radius of stop
Number of through holes
8 or 16| |tt||8 or 16
12 or 24
12 or 24
12 or 24
12 or 24
16 or 32
Number of bolts
1) Hole S is in the exact position based on the nominal size M (precisely concentric with the base circle N), and its tolerance is =2mm (for S=28mm) and =2.5mm (for S=35mm). See GB/T1182.2) Tolerance h8, smaller tolerance h6 can be used with consent. The fit tolerance of the stop is H9 for h8 and H7 for h6.3) Maximum value (no positive tolerance): Take the smaller value, flat surface and cut mouth are allowed. 4) Unless otherwise agreed by the manufacturer and the user, R=0.5) Tolerance is H17, closed or open. With consent, a smaller tolerance zone of H14 may be used. 6) The stopper should be rounded toward the flange surface and chamfered toward the stopper surface. The cylindrical stopper part should have sufficient length. *: In order to be consistent with GB/T4772.1, when H=355mm, the C value should be 254 instead of 250. The values of 200~315 and 800~1000 are taken from the R20 number system, and the values of 315~800 are taken from the R40 number system. 4
GB/T4772.2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series size
+13170130
+13170
+13210
+13210
+13210||tt ||+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper3
B dimension
level values.
Table 2 lists the B dimension values, all using the R20 priority number system. Values other than those listed in Table 2 may be used, but must be taken from the R20 number system.
B dimension
90010001120
14001600
9001000
022402500
025002800
I select the A dimension, the H dimension assumed above usually corresponds to the shaft center height H
of the lower foot motor to the lowest point of the motor or the value of the higher level that is equal to or closest to the value in the priority number system. Note: For upper foot motors, the corresponding
lower foot motor shaft center height H
to the motor lowest point should be used, or this dimension is equal to or closest to the value in the priority number system. 3
5.4C size
C size values are as follows (not related to the shaft center height): GB/T4772.2—1999
0, 100, 224, 250*, 280, 315, 335, 355, 375, 400, 425, 450, 470, 500, 530, 560, 600, 630, 670, 710, 750, 800, 900, 1000.
5.5 Mounting flange dimensions (see Table 3)
Flange number
With stopper
FF1180 (8 or 16/28)
FF1320 (8 or 16/28)
Without stopper
FD1180 (8 or 16/28)
FD1320 (8 or 16/28)
112012 50
12501400
FF1500(12 or 24/28)FD1500(12 or 24/28)170016001800
FF1700(12 or 24/28)FD1700(12 or 24/28)FF1900(12 or 24/35)FD1900(12 or 24/35)1900||tt| |18002000
FF2120(12 or 24/35)FD2120(12 or 24/35)212020002240FF2360(16 or 32/35)FD2360(16 or 32/35)236022402500R
Maximum
Corner radius of stop
Number of through holes
8 or 16| |tt||8 or 16wwW.bzxz.Net
12 or 24
12 or 24
12 or 24
12 or 24
16 or 32
Number of bolts
1) Hole S is in the exact position based on the nominal size M (precisely concentric with the base circle N), and its tolerance is =2mm (for S=28mm) and =2.5mm (for S=35mm). See GB/T1182.2) Tolerance h8, smaller tolerance h6 can be used with consent. The fit tolerance of the stop is H9 for h8 and H7 for h6.3) Maximum value (no positive tolerance): Take the smaller value, flat surface and cut mouth are allowed. 4) Unless otherwise agreed by the manufacturer and the user, R=0.5) Tolerance is H17, closed or open. With consent, a smaller tolerance zone of H14 may be used. 6) The stopper should be rounded toward the flange surface and chamfered toward the stopper surface. The cylindrical stopper part should have sufficient length. *: In order to be consistent with GB/T4772.1, when H=355mm, the C value should be 254 instead of 250. The values of 200~315 and 800~1000 are taken from the R20 number system, and the values of 315~800 are taken from the R40 number system. 4
GB/T4772.2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series size
+13170130
+13170
+13210
+13210
+13210||tt ||+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper5 Mounting flange dimensions (see Table 3)
Flange number
With stopper
FF1180(8 or 16/28)
FF1320(8 or 16/28)
Without stopper
FD1180(8 or 16/28)
FD1320(8 or 16/28)
11201250||tt ||12501400
FF1500(12 or 24/28)FD1500(12 or 24/28)170016001800
FF1700(12 or 24/28)FD1700(12 or 24/28)FF1900(12 or 24/35)FD1900(12 or 24/35)1900
180 02000
FF2120(12 or 24/35)FD2120(12 or 24/35)212020002240FF2360(16 or 32/35)FD2360(16 or 32/35)236022402500R
Maximum
Corner radius of stop
Number of through holes
8 or 16||t t||8 or 16
12 or 24
12 or 24
12 or 24
12 or 24
16 or 32
Number of bolts
1) Hole S is in the exact position based on the nominal size M (precisely concentric with the base circle N), and its tolerance is =2mm (for S=28mm) and =2.5mm (for S=35mm). See GB/T1182.2) Tolerance h8, smaller tolerance h6 can be used with consent. The fit tolerance of the stop is H9 for h8 and H7 for h6.3) Maximum value (no positive tolerance): smaller value, flat surface and cut mouth are allowed. 4) Unless otherwise agreed by the manufacturer and the user, R=0.5) Tolerance is H17, closed or open. With consent, a smaller tolerance zone of H14 may be used. 6) The stopper should be rounded toward the flange surface and chamfered toward the stopper surface. The cylindrical stopper part should have sufficient length. *: In order to be consistent with GB/T4772.1, when H=355mm, the C value should be 254 instead of 250. The values of 200~315 and 800~1000 are taken from the R20 number system, and the values of 315~800 are taken from the R40 number system. 4
GB/T4772.2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series size
+13170130
+13170
+13210
+13210
+13210||tt ||+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper5 Mounting flange dimensions (see Table 3)
Flange number
With stopper
FF1180(8 or 16/28)
FF1320(8 or 16/28)
Without stopper
FD1180(8 or 16/28)
FD1320(8 or 16/28)
11201250||tt ||12501400
FF1500(12 or 24/28)FD1500(12 or 24/28)170016001800
FF1700(12 or 24/28)FD1700(12 or 24/28)FF1900(12 or 24/35)FD1900(12 or 24/35)1900
180 02000
FF2120(12 or 24/35)FD2120(12 or 24/35)212020002240FF2360(16 or 32/35)FD2360(16 or 32/35)236022402500R
Maximum
Corner radius of stop
Number of through holes
8 or 16||t t||8 or 16
12 or 24
12 or 24
12 or 24
12 or 24
16 or 32
Number of bolts
1) Hole S is in the exact position based on the nominal size M (precisely concentric with the base circle N), and its tolerance is =2mm (for S=28mm) and =2.5mm (for S=35mm). See GB/T1182.2) Tolerance h8, smaller tolerance h6 can be used with consent. The fit tolerance of the stop is H9 for h8 and H7 for h6.3) Maximum value (no positive tolerance): smaller value, flat surface and cut mouth are allowed. 4) Unless otherwise agreed by the manufacturer and the user, R=0.5) Tolerance is H17, closed or open. With consent, a smaller tolerance zone of H14 may be used. 6) The stopper should be rounded toward the flange surface and chamfered toward the stopper surface. The cylindrical stopper part should have sufficient length. *: In order to be consistent with GB/T4772.1, when H=355mm, the C value should be 254 instead of 250. The values of 200~315 and 800~1000 are taken from the R20 number system, and the values of 315~800 are taken from the R40 number system. 4
GB/T4772.2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series size
+13170130
+13170
+13210
+13210
+13210||tt ||+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series Size
+13170130
+13170
+13210
+13210
+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper2—1999
6 Shaft extension, key and keyway dimensions, maximum allowable torque of AC motor during continuous operation (see Table 4) Table 4
Tolerance m6
100+35
120+35
140+40
160+40
190+46
220+46
Series Series Size
+13170130
+13170
+13210
+13210
+15210
+15250200
+15250200
+15250200
+15300240
+15300240
+15300240
+17350280
+17350280
+17350280
Tolerance h9
Tolerance h11
-13050
Tolerance N92)
1) When the motor use conditions are determined, the shaft extension can also be selected according to the existing national standards. 2) Keyway tolerance N9 is suitable for general keys, and P9 is suitable for tighter keys. μm
Tolerance P92)
3) The torque value is selected from the R40 number system. When the motor use conditions are determined, it can also be selected according to the existing national standards. 7 Preferred rated output power values
Preferred rated output power values are taken from the R40 numerical system (kW) GE
AC
(GC) Maximum torque during continuous operation 3)
280, 300, 315, 335, 355, 375, 400, 425, 450, 475, 500, 530, 560, 600, 630, 670, 710, 750, 800, 850, 900, 950, 1000
The above rated output power values should also be used for generators, expressed in kilowatts (kW) or volt-amperes (kVA). 5
8 Dimension diagram
8.1 Main dimensions of unregulated foot-type motor BH
8.2 Main dimensions of unregulated foot-type motor LC
GB/T4772.2—1999
8.3 Main dimensions of regulated foot-type motor B
8.4 Shaft extension dimensions
GB/T4772.2—1999
GB/T4772.2—1999
8.5 Main dimensions of regulated flange motor with stopper LR
8.6 Main dimensions of regulated flange motor without stopper
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