GB/T 4772.1-1999 Dimensions and output power classes of rotating electrical machines Part 1: Frame sizes 56 to 400 and flange sizes 55 to 1 080
Some standard content:
ICS29.160.01
National Standard of the People's Republic of China
GB/T4772.1～4772.3—1999
idt IEC72
Dimensions and output series for rotating electrical machines
Issued on 1999-02-26
Implemented on 1999-09-01
Issued by the State Administration of Quality and Technical Supervision
GB/T4772.1—1999
IEC Foreword
1) IEC's formal resolutions or agreements on technical issues are made by technical committees represented by all countries that are particularly concerned with the technical issues. These formal resolutions and agreements try their best to express the international consensus on the issues involved. 2) These resolutions and 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 national 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 IEC72-1 was developed by SC2B (installation dimensions and output power levels) of IECTC2 (rotating motors). The sixth edition of IEC72-1 replaces the fifth edition of IEC72 (1971) and its first amendment (1977) and second amendment (1981). The content of this standard is based on the following documents:
June Rules
2B(CO)51
2B(CO)52
2B(CO)61
2B(CO)62
2B(CO)70
Voting Report
2B(CO)56
2B(CO)57
2B(CO)66
2B(CO)67
2B(CO)73
February Procedure
2B(CO)60
2B(CO)68A
For the complete voting data of this standard, see the voting report listed in the table above. Annexes A, B and C have the status of reports, and Annex D is of an informative nature. The following publications are referenced in IEC 72-1: IEC 34-1: 1983 Rotating electrical machines - Ratings and performance IEC 34-8: 1972 Rotating electrical machines - Terminal marking and direction of rotation IEC 50 (411): 1973 International Electrotechnical Vocabulary (IEV) - Chapter 411: Rotating electrical machines ISO 273: 1979 Fasteners - Through holes for bolts and screws ISO 496: 1973
Driving and driven machines - Shaft height
Rectangular or square keys and their corresponding keyways ISO/R 773: 1969
ISO/R 775: 1969
Cylindrical and 1/10 conical shaft extensions ||tt ||Voting report
2B(CO)65
2B(CO)71
Technical drawings—Geometrical tolerancing—Tolerances of form, orientation, location and run-out—ISO1101:1983
Markings on the sample
Permissible machining deviations for dimensions without tolerances
ISO2768:1973
-General rules, definitions, symbols, drawings
National Standard of the People's Republic of China
Dimensions and output power classes of rotating electrical machines
Part 1: Frame sizes 56 to 400 and
Flange sizes 55 to 1080
Dimensions and output series for rotating electrical machines Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080 1 Scope
This standard applies to rotating electrical machines for most industrial purposes, with a size range of: Foot mounting - shaft height: 56 to 400 mm
Flange mounting - flange base diameter: 55 to 1080 mm GB/T4772.1-1999
idt IEC 72-1:1991
Replaces GB/T4772.1-1984
GB/T4826-1984
This standard lists the tables of mounting dimensions, shaft extension dimensions and output power levels. For different shaft extension diameters, the maximum torque allowed when used as an AC motor in continuous duty is also listed. Note: The various sizes of motor shaft heights of 355 to 400 mm given in this standard include the values given in GB/T4772.2. 2 Reference Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T755—1987 Basic technical requirements for rotating electrical machines Cross-sectional dimensions of flat keys and keyways
GB/T1095—1979
GB/T1096—1979 Dimensions of common flat keys GB/T1182-1996
General rules, definitions, symbols and drawing representations for shape and position tolerances (eqvISO1101:1996) Cylindrical shaft extensions (neqISO/R775:1969) GB/T1569—1990
GB/T1570-—1990
GB/T1804-—1992
Conical shaft extensions (neqISO/R775:1969) General tolerances Unspecified tolerances for linear dimensions (idtISO2768-1:1989) G B1971—1980
Motor terminal marking and rotation direction
GB/T2900.25-1994
Electrical terminology Rotating motor (neqIEC50(411)) GB/T4942.1—1985
Classification of protection of motor housing (eqvIEC34-5:1972) GB/T5277—1985 Through holes for fasteners, bolts and screws (eqvISO273:1979) GB/T11335—1989
Limit deviation of angles without tolerance
GB/T12217—1990
Machine shaft height (neqISO496:1973)
3 Dimension symbols
The following specified symbols are explained in the schematic diagram of Chapter 11. A--the distance between the axes of the through holes of the foot bolts (viewed from the end); AA--the width of the foot (viewed from the end);
Approved by the State Administration of Quality and Technical Supervision on February 26, 1999, and implemented on September 1, 1999
AB--the distance between the outer edges of the foot (viewed from the end); AC--the diameter of the motor
GB/T4772.1-1999
AD-the distance from the vertical center line of the motor to the edge of the most protruding part of the terminal box or other fixed on the side of the motor, B
the distance between the axes of the foot bolt through holes;
foot length;
the distance between the outer edges of the foot (side view); -the distance from the shaft extension shoulder at the D end to the axis of the nearest foot bolt through hole; -the distance from the shaft extension shoulder at the N end to the axis of the nearest foot bolt through hole; CA-
D——D end shaft extension diameter:
-N end shaft extension diameter;
-D EA—The length of the shaft extension from the shaft shoulder at the N end;
-The width of the keyway of the shaft extension at the D end;
-The width of the keyway of the shaft extension at the N end;
-The distance from the bottom of the keyway to the opposite outer surface of the shaft extension at the D end;-The distance from the top of the key to the opposite outer surface of the shaft extension at the D end;GA
GB--The distance from the bottom of the keyway to the opposite outer surface of the shaft extension at the N end;GC-
-The distance from the top of the key to the opposite outer surface of the shaft extension at the N end;GD-The height of the key of the shaft extension at the D end ;
-D-end shaft extension outer surface to the depth of the keyway bottom; N-end shaft extension key height;
-N-end shaft extension outer surface to the depth of the keyway bottom;-The distance from the motor axis to the bottom of the foot (basic size); The distance from the motor axis to the mounting surface, refers to the type of motor foot elevation; HA-
Foot thickness,
The distance from the top surface of the horizontal motor to the bottom surface of the foot; The distance from the top surface of the lifting ring, terminal box or other most protruding parts installed on the top of the motor to the bottom surface of the foot; ~The distance from the bottom surface of the foot to the lowest point of the motor for the upper foot type motor 1. The distance between the two points; 2. The diameter of the through hole of the foot or the width of the oblong hole; 3. The total length of the motor with a single shaft extension; 4. The thickness of the flange; 5. The distance from the flange mounting surface to the motor end face; 6. The total length of the motor with an N-end shaft extension; 7. The base circle diameter of the flange mounting hole: 8. The diameter of the flange stop; 9. The outer diameter of the flange, if not circular, is twice the maximum radius; 10. The distance from the flange mounting surface to the shaft extension shoulder; 11. The diameter of the flange bolt through hole or the nominal diameter of the screw hole; 12. The height of the flange stop. 13. Note: The definition of the D end and the N end of the motor can be found in GB1971. 4. Motor size markings: GB/T4772.1--1999. Motors with feet are indicated by adding the shaft extension diameter after the frame number. Example: 112M28
Flanged motors have three designs:
Through holes on the flange, indicated by FF flange; -Screw holes on the flange, and the stop diameter N is smaller than the base circle diameter M of the fixing hole, indicated by FT flange; Screw holes on the flange, and the stop diameter N is larger than the base circle diameter M of the fixing hole, indicated by FI flange. The above symbols form various flange numbers. Motors that are only mounted with flanges are indicated by the shaft extension diameter followed by the letters FF, FT or FI and the flange number.
Example: With through holes: 28FF215
With screw holes: 28FT165
or 28FI165
For motors with feet and flanges at the drive end (D end), the letters FF, FT or FI and the flange number should be added after the shaft extension diameter. Example: Flange with through hole: 112M28FF215
112M28FT165
or 112M28FI165
5 Terminal box position
5.1 Motor with foot
From the D end of the motor, the terminal box should be placed within the angle range of 10° below the horizontal center line at the top of the motor to the right. There is no such regulation for generators.
In addition to the terminal box at the top, the manufacturer can also place the terminal box on the left side if the user requests it. Note: Better measures should be taken to allow the cable to enter the terminal box in any of the four directions perpendicular to each other. 5.2 Motor with flange only
No regulation on the terminal box position.
6 Position of holes on flange
When the motor with flange also has a foot, the holes on the flange should be located at a distance from the flange diameter line perpendicular to the foot mounting surface: 4 holes are 45°,
8 holes are 22.5° and 67.5° (see Chapter 11). Installation dimensions
7.1 Foot-mounted motor
Table 1 Dimensions H of motors with shaft heights from 56 to 400 mm
Frame size\
Basic dimensions
Limit deviation
Basic dimensions
Limit deviation
Frame size
(112L)
(132L)
(225L)
(250L)
(280L)
(315L)
Basic dimensions
Limit deviation
GB/T4772.1—1999
Table 1 (end)
1) Frame sizes in brackets are not recommended for use in AC motors. 2) Long openings are not allowed.
3) The tolerance is the rough assembly series H14 in GB/T5277-1985. 4) The B dimension in the table is preferred, and the recommended value of the increased B dimension is specified in Table 2. 6
Basic size
Limit deviation3
280315
315355|400
GB/T4772.1—1999
450500560
Recommended value of B dimension
Frame number letter
630|710
The S, M, and L values of the B dimension specified in Table 1 are reproduced in Table 2. 2 In special cases, the values in the priority number system R40 can be used instead of the values in the table. H
Use the case of two adjacent letters in the above table, such as frame number 225, B=850mm, which is DC. 7.2 Flange mounted motor
When the motor has both foot and flange, the A, B and C dimension values shall be selected from Table 1. F
Table 3 Flange dimensions with base circle diameters from 55 to 1080 mmN
Flange number
FFFT1)
Basic dimensions
-281150
Basic dimensions
Through hole (FF)
H14+520
1) This table is not applicable to FI flange.
However, the P dimension is only allowed to be smaller than the value in the table. 2) For flange numbers FF300 and FT300 and below, the flange shape may not be circular. 13) For F1 flange motors, the through hole on the matching mounting component is recommended to follow the S column dimensions of the corresponding FF flange. 400
(FT)3)
Maximum value
GB/T4772.1—1999
8 Dimensions of shaft extension, key and keyway, maximum allowable torque of shaft extension in continuous working system of AC motor Table 4
GD(GF)
-11028
1) When the shaft extension diameter is less than 25mm, it is sufficient to consider the shaft shoulder of 0.5mm. Key
2) When the motor use conditions are determined, the shaft extension length can also be selected according to the national standard for shaft extension. 3) Keyway tolerance N9 is suitable for general key connection, and P9 is suitable for tight key connection. 4) The tolerance of GA can be calculated from other dimensional values listed in the table. Slot
GE(GH)
5) The torque value is selected from the R40 number system. When the operating conditions are determined, the torque value can also be selected according to the national standard. 9 Installation tolerances for flanged motors 9.1 Maximum permissible radial runout of shaft extension (GC) Torque (for AC motors in continuous operation) 5) D ≤ 10 101--1999
Motors with feet are indicated by the shaft extension diameter after the frame number. Example: 112M28
Motors with flanges have three designs:
There are through holes on the flange, indicated by FF flange; -There are screw holes on the flange, and the stop diameter N is smaller than the base circle diameter M of the fixing hole, indicated by FT flange; There are screw holes on the flange, and the stop diameter N is larger than the base circle diameter M of the fixing hole, indicated by FI flange. The above symbols form various flange numbers. Motors that are only mounted with flanges are indicated by the shaft extension diameter followed by the letters FF, FT or FI and the flange number.
Example: With through holes: 28FF215
With screw holes: 28FT165
or 28FI165
For motors with feet and flanges at the drive end (D end), the letters FF, FT or FI and the flange number should be added after the shaft extension diameter. Example: Flange with through hole: 112M28FF215
112M28FT165
or 112M28FI165
5 Terminal box position
5.1 Motor with foot
From the D end of the motor, the terminal box should be placed within the angle range of 10° below the horizontal center line at the top of the motor to the right. There is no such regulation for generators.
In addition to the terminal box at the top, the manufacturer can also place the terminal box on the left side if the user requests it. Note: Better measures should be taken to allow the cable to enter the terminal box in any of the four directions perpendicular to each other. 5.2 Motor with flange only
No regulation on the terminal box position.
6 Position of holes on flange
When the motor with flange also has a foot, the holes on the flange should be located at a distance from the flange diameter line perpendicular to the foot mounting surface: 4 holes are 45°,
8 holes are 22.5° and 67.5° (see Chapter 11). Installation dimensions
7.1 Foot-mounted motor
Table 1 Dimensions H of motors with shaft heights from 56 to 400 mm
Frame size\
Basic dimensions
Limit deviation
Basic dimensions
Limit deviation
Frame size
(112L)
(132L)
(225L)
(250L)
(280L)
(315L)
Basic dimensions
Limit deviation
GB/T4772.1—1999
Table 1 (end)
1) Frame sizes in brackets are not recommended for use in AC motors. 2) Long openings are not allowed.
3) The tolerance is the rough assembly series H14 in GB/T5277-1985. 4) The B dimension in the table is preferred, and the recommended value of the increased B dimension is specified in Table 2. 6
Basic size
Limit deviation3
280315
315355|400
GB/T4772.1—1999
450500560
Recommended value of B dimension
Frame number letter
630|710
The S, M, and L values of the B dimension specified in Table 1 are reproduced in Table 2. 2 In special cases, the values in the priority number system R40 can be used instead of the values in the table. H
Use the case of two adjacent letters in the above table, such as frame number 225, B=850mm, which is DC. 7.2 Flange mounted motor
When the motor has both foot and flange, the A, B and C dimension values shall be selected from Table 1. F
Table 3 Flange dimensions with base circle diameters from 55 to 1080 mmN
Flange number
FFFT1)
Basic dimensions
-281150
Basic dimensions
Through hole (FF)
H14+520
1) This table is not applicable to FI flange.
However, the P dimension is only allowed to be smaller than the value in the table. 2) For flange numbers FF300 and FT300 and below, the flange shape may not be circular. 13) For F1 flange motors, the through hole on the matching mounting component is recommended to follow the S column dimensions of the corresponding FF flange. 400
(FT)3)
Maximum value
GB/T4772.1—1999
8 Dimensions of shaft extension, key and keyway, maximum allowable torque of shaft extension in continuous working system of AC motor Table 4
GD(GF)
-11028
1) When the shaft extension diameter is less than 25mm, it is sufficient to consider the shaft shoulder of 0.5mm. Key
2) When the motor use conditions are determined, the shaft extension length can also be selected according to the national standard for shaft extension. 3) Keyway tolerance N9 is suitable for general key connection, and P9 is suitable for tight key connection. 4) The tolerance of GA can be calculated from other dimensional values listed in the table. Slot
GE(GH)
5) The torque value is selected from the R40 number system. When the operating conditions are determined, the torque value can also be selected according to the national standard. 9 Installation tolerances for flanged motors 9.1 Maximum permissible radial runout of shaft extension (GC) Torque (for AC motors in continuous operation) 5) D ≤ 10 101--1999bzxz.net
Motors with feet are indicated by the shaft extension diameter after the frame number. Example: 112M28
Motors with flanges have three designs:
There are through holes on the flange, indicated by FF flange; -There are screw holes on the flange, and the stop diameter N is smaller than the base circle diameter M of the fixing hole, indicated by FT flange; There are screw holes on the flange, and the stop diameter N is larger than the base circle diameter M of the fixing hole, indicated by FI flange. The above symbols form various flange numbers. Motors that are only mounted with flanges are indicated by the shaft extension diameter followed by the letters FF, FT or FI and the flange number.
Example: With through holes: 28FF215
With screw holes: 28FT165
or 28FI165
For motors with feet and flanges at the drive end (D end), the letters FF, FT or FI and the flange number should be added after the shaft extension diameter. Example: Flange with through hole: 112M28FF215
112M28FT165
or 112M28FI165
5 Terminal box position
5.1 Motor with foot
From the D end of the motor, the terminal box should be placed within the angle range of 10° below the horizontal center line at the top of the motor to the right. There is no such regulation for generators.
In addition to the terminal box at the top, the manufacturer can also place the terminal box on the left side if the user requests it. Note: Better measures should be taken to allow the cable to enter the terminal box in any of the four directions perpendicular to each other. 5.2 Motor with flange only
No regulation on the terminal box position.
6 Position of holes on flange
When the motor with flange also has a foot, the holes on the flange should be located at a distance from the flange diameter line perpendicular to the foot mounting surface: 4 holes are 45°,
8 holes are 22.5° and 67.5° (see Chapter 11). Installation dimensions
7.1 Foot-mounted motor
Table 1 Dimensions H of motors with shaft heights from 56 to 400 mm
Frame size\
Basic dimensions
Limit deviation
Basic dimensions
Limit deviation
Frame size
(112L)
(132L)
(225L)
(250L)
(280L)
(315L)
Basic dimensions
Limit deviation
GB/T4772.1—1999
Table 1 (end)
1) Frame sizes in brackets are not recommended for use in AC motors. 2) Long openings are not allowed.
3) The tolerance is the rough assembly series H14 in GB/T5277-1985. 4) The B dimension in the table is preferred, and the recommended value of the increased B dimension is specified in Table 2. 6
Basic size
Limit deviation3
280315
315355|400
GB/T4772.1—1999
450500560
Recommended value of B dimension
Frame number letter
630|710
The S, M, and L values of the B dimension specified in Table 1 are reproduced in Table 2. 2 In special cases, the values in the priority number system R40 can be used instead of the values in the table. H
Use the case of two adjacent letters in the above table, such as frame number 225, B=850mm, which is DC. 7.2 Flange mounted motor
When the motor has both foot and flange, the A, B and C dimension values shall be selected from Table 1. F
Table 3 Flange dimensions with base circle diameters from 55 to 1080 mmN
Flange number
FFFT1)
Basic dimensions
-281150
Basic dimensions
Through hole (FF)
H14+520
1) This table is not applicable to FI flange.
However, the P dimension is only allowed to be smaller than the value in the table. 2) For flange numbers FF300 and FT300 and below, the flange shape may not be circular. 13) For F1 flange motors, the through hole on the matching mounting component is recommended to follow the S column dimensions of the corresponding FF flange. 400
(FT)3)
Maximum value
GB/T4772.1—1999
8 Dimensions of shaft extension, key and keyway, maximum allowable torque of shaft extension in continuous working system of AC motor Table 4
GD(GF)
-11028
1) When the shaft extension diameter is less than 25mm, it is sufficient to consider the shaft shoulder of 0.5mm. Key
2) When the motor use conditions are determined, the shaft extension length can also be selected according to the national standard for shaft extension. 3) Keyway tolerance N9 is suitable for general key connection, and P9 is suitable for tight key connection. 4) The tolerance of GA can be calculated from other dimensional values listed in the table. Slot
GE(GH)
5) The torque value is selected from the R40 number system. When the operating conditions are determined, the torque value can also be selected according to the national standard. 9 Installation tolerances for flanged motors 9.1 Maximum permissible radial runout of shaft extension (GC) Torque (for AC motors in continuous operation) 5) D ≤ 10 102 Flange mounted motor
When the motor has both foot and flange, the A, B, C dimension values should be selected from Table 1. F
Table 3 Flange dimensions with base circle diameters from 55 to 1080 mmN
Flange number
FFFT1)
Basic dimensions
-281150
Basic dimensions
Through hole (FF)
H14+520
1) This table is not applicable to FI flange.
However, the P dimension is only allowed to be smaller than the value in the table. 2) For flange numbers FF300 and FT300 and below, the shape of the flange may not be circular. 13) For F1 flange motors, the through hole on the matching mounting component is recommended to follow the S column size of the corresponding FF flange. 400
(FT)3)
Maximum value
GB/T4772.1—1999
8 Dimensions of shaft extension, key and keyway, maximum allowable torque of shaft extension in continuous working system of AC motor Table 4
GD(GF)
-11028
1) When the shaft extension diameter is less than 25mm, it is sufficient to consider the shaft shoulder of 0.5mm. Key
2) When the motor use conditions are determined, the shaft extension length can also be selected according to the national standard for shaft extension. 3) Keyway tolerance N9 is suitable for general key connection, and P9 is suitable for tight key connection. 4) The tolerance of GA can be calculated from other dimensional values listed in the table. Slot
GE(GH)
5) The torque value is selected from the R40 number system. When the operating conditions are determined, the torque value can also be selected according to the national standard. 9 Installation tolerances for flanged motors 9.1 Maximum permissible radial runout of shaft extension (GC) Torque (for AC motors in continuous operation) 5) D ≤ 10 102 Flange mounted motor
When the motor has both foot and flange, the A, B, C dimension values should be selected from Table 1. F
Table 3 Flange dimensions with base circle diameters from 55 to 1080 mmN
Flange number
FFFT1)
Basic dimensions
-281150
Basic dimensions
Through hole (FF)
H14+520
1) This table is not applicable to FI flange.
However, the P dimension is only allowed to be smaller than the value in the table. 2) For flange numbers FF300 and FT300 and below, the shape of the flange may not be circular. 13) For F1 flange motors, the through hole on the matching mounting component is recommended to follow the S column size of the corresponding FF flange. 400
(FT)3)
Maximum value
GB/T4772.1—1999
8 Dimensions of shaft extension, key and keyway, maximum allowable torque of shaft extension in continuous working system of AC motor Table 4
GD(GF)
-11028
1) When the shaft extension diameter is less than 25mm, it is sufficient to consider the shaft shoulder of 0.5mm. Key
2) When the motor use conditions are determined, the shaft extension length can also be selected according to the national standard for shaft extension. 3) Keyway tolerance N9 is suitable for general key connection, and P9 is suitable for tight key connection. 4) The tolerance of GA can be calculated from other dimensional values listed in the table. Slot
GE(GH)
5) The torque value is selected from the R40 number system. When the operating conditions are determined, the torque value can also be selected according to the national standard. 9 Installation tolerances for flanged motors 9.1 Maximum permissible radial runout of shaft extension (GC) Torque (for AC motors in continuous operation) 5) D ≤ 10 10
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