Siemens
(4872) 700-366
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General technical data Part 3
Frame sizes

Standard frame sizes and special frame size

Frame sizeacc.toDINEN60034-7

Frame size

Code 12th
position

Order code

Withoutflange

IMB3

56Mto450

04)

IMB6/IM1051,
IMB7/IM1061,
IMB8/IM1071

56Mto315L

0

IMV5/IM1011
without protection cover

56Mto315M
315L

05)
91)5)


M1D

IMV6/IM1031

56Mto315M
315L

0
91)


M1E

IMV5/IM1011
with protection cover

63Mto315L

91)7)

M1F

Withflange

IMB5/IM3001

56Mto315M

12)

IMV1/IM3011
without protection cover

56Mto315M
315Lto450

12)3)5)
81)4)5)


IMV1/IM3011
with protection cover

63Mto450

41)2)3)7)

IMV3/IM3031

56Mto160L
180Mto315M

1
92)3)


M1G

IMB35/IM20016)

56Mto450

64)


In DINEN50347, standard flanges are assigned to the frame sizes as FT with tapped holes. The special flange was assigned as a large flange in the previous DIN42677.

1) For 2-pole 1LG4 and 1LG6 motors, of frame size 315L, a 60 Hz version is possible on request.

2) 1LG4/1LG6, 1MA6 and 1MJ7 motors in frame sizes 225S to 315L are supplied with two screw-in eyebolts (four eyebolts for 1LG6318) in accordance with IMB5, whereby one can be rotated in accordance with IMV1 or IMV3. It is important to note that stress must not be applied perpendicular to the ring plane.

3) For frame sizes 180M to 225M, the 1LA5 motors can be supplied with two additional eyebolts; state Order No. suffix Z and order code K32.

4) Frame size 450, 2-pole, 60Hz is not possible.

5)

For explosion-proof motors:
For types of construction with shaft extension pointing downwards, the version with protective cover is mandatory. For types of construction with shaft extension pointing upwards, a suitable cover must be implemented to prevent small parts from falling into the fan cover (see the standard IEC/EN60079-0). The cover must not block the cooling air-flow.

6) In the case of 1LA8, the corresponding flange diameter is greater than twice the shaft height.

7) A second K16 shaft extension is not possible.

Frame sizeacc.toDINEN60034-7

Frame size

Code 12th
position

Order code

MitNormflansch

IMB14/IM3601,
IMV19/IM3631,
IMV18/IM3611
without protection cover

56Mto160L

22)4)

IMV18/IM3611
with protection cover

63Mto160L

91)2)

M2A

IMB34/IM2101

56Mto160L

72)4)

Mit Sonderflansch

IMB14/IM3601,
IMV19/IM3631,
IMV18/IM3611
without protection cover

56Mto160L

33)4)

IMV18/IM3611
with protection cover

63Mto160L

91)3)

M2B

IMB34/IM2101

56Mto160L

93)

M2C


1) A second K16 shaft extension is not possible.

2) For 1MJ6 motors, only possible up to frame size 90.

3) For 1MJ6 motors, only possible up to frame size 80.

4)

For explosion-proof motors:
For types of construction with shaft extension pointing downwards, the version with protective cover is mandatory. For types of construction with shaft extension pointing upwards, a suitable cover must be implemented to prevent small parts from falling into the fan cover (see the standard IEC/EN60079-0). The cover must not block the cooling air-flow.

The dimensions of the following types of construction are identical:
IMB3, IMB6, IMB7, IMB8, IMV5 and IMV6
IMB5, IMV1 and IMV3
IMB14, IMV18 and IMV19

Motors in the standard output range can be ordered in basic types of construction IMB3, IMB5 or IMB14 and operated in mounting positions IMB6, IMB7, IMB8, IMV5, IMV6, IMV1, IMV3 (up to frame size 160L) or IMV18 and IMV19. Eyebolts are available for transport and installation in a horizontal position. In conjunction with the eyebolts, for the purpose of stabilizing the position when the motor is arranged vertically,
additional lifting straps (EN1492-1) and/or clamping bands (EN12195-2) must be used. If mounting position IMV1 is ordered, eyebolts are supplied for vertical mounting.

  • For this reason, they are normally designated only with the basic type of construction on the rating plate.
  • If motors of frame size 180M in a type of construction with feet are mounted on the wall, it is recommended that the motor feet are supported.

With motors that have a vertical shaft extension, the end user must prevent an ingress of fluid along the shaft.

In the case of all types of construction with shaft end down, the version with protective cover is urgently recommended, see the section Degrees of protection.

Motor series 1LA8, 1PQ8 and 1LL8 are available in types of construction IMB3, IMV1 with and without cover, as well as IMB35.

Frame design

Motors in the types of construction with feet have, in some case, two fixing holes at the non-drive end (NDE), see dimension tables. A code is cast into the motor close to the retaining holes to identify the frame size.

Mechanical design and degrees of protection

Preparation for gear mounting

The flange-mounting motors can be equipped with a radial sealing ring in order to mount gearing.
Order codeK17.

It must be ensured that the sealing ring is lubricated using grease, oil mist or oil spray (it is not permissible to use pressurized oil).
We recommend that the permissible bearing loads are carefully checked.
Please enquire about gear mounting for 1LA8 non-standard motors.

Eyebolts and transport

1LA7, 1MA7 and 1LA5 motors of frame size 100L and above have two horizontal eyebolts in the horizontal type of construction. For motors in vertical type of construction, two rotatable eyebolts are also supplied.

1LA6 and 1MA6 motors are supplied in a horizontal type of construction with feet complete with one eyebolt.

Horizontal types of construction for flange-mounting in frame sizes 100 to 160 are supplied with one eyebolt. With vertical types of construction, a rotatable eyebolt is also supplied. All flange-mounting types of construction in frame sizes 180M to 315L are supplied with two diagonal eyebolts. They can be rotated for vertical types of construction.

1LG4 and 1LG6 motors are supplied in a horizontal type of construction with two diagonal eyebolts. For vertical types of construction, the eyebolts can be rotated.

All the available eyebolts specifically provided for the type of construction must be used during transport.
1MA6, 1MJ6 and 1MJ7 motors of frame size 180 M and above have one eyebolt in type of construction IMB3 in the standard version and two eyebolts in type of construction IMB5. If type of construction IMV1 is used, one of the eyebolts must be rotated whereby it is important to note that forces perpendicular to the ring plane are not permitted.

1LA8, 1PQ8 and 1LL8 motors have two diagonally fixed eyebolts. The IM V1 types of construction have hinged eyebolts.

1MJ6 motors, frame sizes 90L to 132M have two eyebolts, frame sizes 160M and 160L have one eyebolt.

For frame sizes 180M to 225M, 1LA5 motors can be supplied with two additional eyebolts for types of construction IMV1/IMV3.
Order codeK32

Type series

Frame size

Frame material

Frame feet

1LA5,1LA7, 1LA9

56to1001)
112to225

Frame material

Frame feet

1MA7

63to1001)
112to160

Aluminium alloy
Aluminium alloy

Cast
screwed on

1LG4,1LG6

180Mto315L

Aluminium alloy
Aluminium alloy

Cast
screwed on

1LA6,1MA6

100to200
225to315M
315L

Cast iron

Cast2)

1MJ6

71and80
90to200

Cast iron
Cast iron
Cast iron

Screwed on
Cast
Screwed on

1MJ7

225to315

Cast iron
Cast iron

Cast
screwed on

1LA8

315to450

Cast iron

Screwed on

1MJ1

315

Cast iron

Cast

1MJ8

315to355


Degrees of protection

All motors are designed to IP 55 degree of protection. They can be installed in dusty or humid environments. The motors are suitable for operation in tropical climates. Guide value <60% relative air humidity at KT40C. Other requirements are available on request.

1LL8 motors are available to IP23 degree of protection and are of a similar construction to 1LA8 motors. IP23 degree of protection is achieved by opening the internal cooling circuit and supplying it with external cooling air. Motors of the 1LL8 type series are only intended for installation indoors. They must not be subjected to humid, salty or corrosive atmospheres.

Most motors can be supplied in IP56 and IP65 degrees of protection on request.

Brief explanation of the degrees of protection

IP55: Protection against harmful dust deposits, protection against water jets from any direction.

IP56 (non-heavy-sea):Protection against harmful dust deposits, protection against water jets from any direction.
Order codeK52DINEN60034-5 defines protection level 6 for water protection as: Protection against water due to heavy seas or water in a powerful jet. IP56 non-heavy-sea degree of protection can only be used with the requirement Protection against a powerful jet and not for the requirement Protection against heavy sea.
This is not possible in combination with modular technology.

IP65: Complete protection against dust deposits, protection against water jets from any direction. Order codeK50In DINEN60034-5, the code 6 for protection against the ingress of foreign bodies and touch hazard protection for electrical machines is not listed Data for code 6 (protection against the ingress of dust) is given in EN60529. Not possible in combination with modular technology.

DINEN60529 contains a comprehensive description of this degree of protection as well as test conditions.

With motors that have a vertical shaft extension, the end user must prevent an ingress of fluid along the shaft.

For motors with shaft extension pointing downwards, the version with protective cover is urgently recommended, see Types of construction.

With flange-mounting motors, for IMV3 type of construction, collection of fluid in the flange basin can be prevented by drainage holes (on request).
Drainage holes are usually available in 1MA6 and 1MA7 motors of frame size 225 and above and in all 1LG4 and 1LG6 motors.

1LG4, 1LG6, 1LA8, 1LL8, 1PQ8 motors and 1MA6 motors of frame size 225 and above have condensation drainage holes that are sealed with plugs.
Motors for Zones 2 and 21 (1MA6 of frame size 225 and above and 1LG4 and 1LG6) have condensation drainage holes that are sealed with screws.

Condensation drainage holes can also be implemented in motors designed for Zones 2, 21 and 22.
The condensation drainage holes at the drive end (DE) and non- drive end (NDE) are sealed (IP55) on delivery. If condensation drainage holes are required in motors of the IMB6, IM B7 or IMB8 type of construction (feet located on side or top), it is necessary to relocate the bearing plates at the drive end (DE) and non-drive end (NDE) so that the condensation drainage holes situated between the feet on delivery are underneath.
Order codeL12

When the motors are used or are stored outdoors (not 1LL8) we recommend that they are kept under some sort of cover so that they are not subject to direct intensive solar radiation, rain, snow, ice or dust over a long period of time. In such cases, technical consultation may be appropriate.

When the motors are used outdoors or in a corrosive environment, it is recommended that non-rusting screws are used externally.
Order codeM27

Vibration-proof version
A load of 1.5g in all 3 planes for up to 1% of the service life of the motor is possible.
Order codeL03

Noise levels for line-fed operation

The noise levels are measured in accordance with DINENISO1680 in a dead room. It is specified as the A- weighted measuring-surface sound pressure levelLpfA in dB(A).
This is the spatial mean value of the sound pressure levels measured on the measuring surface. The measuring surface is a cube 1m away from the surface of the motor. The sound power level is also specified as LWA in dB(A).
The specified values are valid at 50Hz (see the selection and ordering data in the appropriate sections of the catalog). The tolerance is +3dB. At 60Hz, the values are approximately 4dB(A) higher. Please enquire about the noise levels for pole-changing motors, motors with increased output or converter-fed motors.

To reduce noise levels, 2-pole motors with frame size 132S and above and 1LA8 and 1LL8 2-pole motors of frame size315 can be fitted with an axial-flow fan that is only suitable for one direction of rotation. The values can be taken from the table Low- noise version below and for 1LA8 or 1LL8 2-pole motors from the selection and ordering data in the catalogue section Non- standard motors of frame size 315 and above.

Clockwise rotation
Order codeK37

Anti-clockwise rotation
Order codeK38

The motors up to frame size 315 L are up to 80 mm longer than normal.
A second shaft extension and/or mounting of an encoder are not possible (see Special versions in the relevant sections of the catalogue).

Low-noise version

Type series

Frame size

2-pole motors

L pfA

L WA

dB (A)

dB (A)

1LA5, 1LA6, 1LA7, 1MA7, 1MA6, 1MJ6, 1MJ7

132
160

64
64

76
76

180
200

63
63

76
76

225
250

68
70

80
82

280
315

72
74

84
86

1LG4, 1LG6 1)

180
200
225
250
280
315

65
70
68
70
72
74

78
83
81
83
85
87

1MJ8

355

69

84

1MJ1

315
355
400
450

Available soon


1) Not necessary for 1LG6 motors because these motors are already noise optimized.

Earth brushes are available for converter-fed operation for 1LG4 and 1LG6 motors. Order codeM44

Only available on request.

Balance and vibration severity

All of the rotors are dynamically balanced with half key. This corresponds to vibration severity grade N (normal). The vibrational characteristics and behaviour of electrical machinery is specified in DINEN60034-14. Half key balancing is specified here based on DINISO8821.

The balancing type is stamped on the face of the drive-end (DE) shaft extension.

F=Balancing with full key
H=Balancing with half key
N=Balancing without key
Motors up to frame size 80 have the type of balancing marked on the rating plate.
Full key balancing can be supplied if order codeL68 is specified (extra charge).

Low-vibration versions can be supplied to fulfill stricter requirements on smooth running (extra charge).

Vibration severity grade R (reduced).
Order codeK01.

Vibration severity grade S (special).
Not possible with parallel roller bearings.
Order codeK02.

The limits stated in the table below are applicable to freely suspended motors running uncoupled and at no load as well as to rigidly installed 1LA8 motors, frame size 450.

For converter-fed operation with frequencies greater than 60 Hz, special balancing is required for compliance with the specified limit values (plain text: Max. speed).

For further details, see the online help in SD configurator.

Low-vibration versions of pole-changing motors are available in accordance with DIN EN 60034-14.

Limitsofvibration severityinmm/sEffectiveshaftheightHinmm

Freesuspension

Rigidinstallation

Vibration severity grade

Rated speed

56<H?132

132<H?225

225<H?400

H>400

H>400

min1

N

600...3600

1,8

2,8

3,5

3,5

2,8

R

600...1800

0,71

1,12

1,8

2,8

1,8

>1800...3600

1,12

1,8

2,8

2,8

1,8

S

600...1800

0,45

0,71

1,12

>1800...3600

0,71

1,12

1,8


It must be noted that the measured values can deviate by 10% from the actual values.

Shaft and rotor

Shaft extension

60 centre hole to DIN332, Part2 with M3 to M24 tapped hole depending on the shaft diameter (see dimension tables in the corresponding chapters)

Second standard shaft extension.
Order codeK16.

The second shaft extension can transmit the full rated output via an output coupling up to frame size 315M (please enquire about reduced transmitted power for frame sizes of 315L and above). For motor series 1LA8 and 1LL8, the second shaft extension can transmit 50% of the rated output with an output coupling. (Please contact your local Siemens office if higher values are required.)
The full rated output is not applicable for 1LA motors, frame sizes 90S to 112M. These motors can only transmit the rated output of the next lower size.

Please also enquire about the transmitted power and maximum cantilever force if belt pulleys, chains or gear pinions are used on the second shaft extension.

A second shaft extension is not available if a rotary pulse encoder and/or separately-driven fan is mounted (also applicable to motor series 1PQ8). Please enquire if a brake is mounted.
For motor series 1LA8 and 1LL8, the second standard shaft extension is only available on request for 2-pole motors please specify the weight of the coupling and type of lever arm.

The non-drive end (NDE) of frame sizes 100L to 225M has an M8 centre hole, DR form, for mounting the 1XP8001 rotary pulse encoder or for fitting and extraction tools.

The non-drive end (NDE) of the 1LG4 and 1LG6 motors of frame sizes 180M to 315L, has an M16 centre hole, DS form.

Shaft extension(DE)

Diameter

Thread

mm

mm

7...10

DRM3

>10...13

DRM4

>13...16

DRM5

>16...21

DRM6

>21...24

DRM8

>24...30

DRM10

>30...38

DRM12

>38...50

DSM16

>50...85

DSM20

>85...130

DSM24


Dimensions and tolerances for keyways and keys are in designed to DINEN50347. The motors are always supplied with a key inserted in the shaft.

Shaft extension with standard dimensions, without featherkey way

For motor series 1LA8, 1PQ8 and 1LL8, the standard shaft extension can be ordered with standard dimensionswithout a featherkey way.
Order codeK42

Other motor series must be ordered with order codeY55.

Standard shaft made of non-rusting steel

For motor series 1LA5, 1LA6, 1LA7, 1LP5, 1LP7, 1PP5 and 1PP7, a standard shaft made of non-rusting steel (material X20Cr13V) can be ordered. This is only possible for shaft extensions of standard dimensions. For non-standard shaft dimensions, there will be an additional charge!
Order codeM65

Please enquire about other non-rusting materials.
Please enquire regarding motor series 1LG4 and 1LG6.

Non-standard cylindrical shaft extension

The non-standard cylindrical shaft extension can be used on the drive end (DE) or non-drive end (NDE). The featherkey is always supplied with it.
Order codeY55

When motors are ordered that have a longer or shorter shaft extension as standard, the required position and length of the featherkey way must be specified in a sketch. It must be ensured that only featherkeys in accordance with DIN 6885, Form A are permitted to be used. The location of the featherkey way is in the centre of the shaft extension and, in the case of non-standard motors, 5 mm from the shaft extension. The length is defined by the manufacturer normatively.

Not valid for: Conical shafts, non-standard threaded journals, non-standard shaft tolerances, friction welded journals, extremely thin shafts, special geometry dimensions (e.g. square journals, etc.), hollow shafts.

For the version Drive-end shaft extension (DE) without featherkey way, order code Y55 must also be used.

For 1MJ motors with longer shaft extensions than standard, the maximum cantilever force must be reduced accordingly. This will ensure that the shaft does not sag more than with the standard shaft extension (please enquire).
For order codeY55 and second standard shaft extensionK16 (see previous page):

  • Dimensions D and DA must be less than or equal to the inner diameter of the roller bearing (see dimension tables under Dimensions in the relevant chapters)
  • Dimensions E and EA must be smaller than or equal to 2 x length E (standard) of the shaft extension

A non-standard cylindrical shaft extension can be supplied for the motor series listed in the table Permissible changes to shaft extension below up to the specified maximum lengths and diameters as compared to the standard shaft.

It is the responsibility of the customer to ensure that the maximum cantilever forces are reduced in accordance with the non- standard shaft extension.

Permissible changes to the shaft extension:

Motor series

Frame size

Number of poles

Shaft extension length
E in mm

Shaft extension diameter
D in mm

Standard

Up to max.

Standard

Up to max. 1)

1LA6,
1LA7,
1LA9,
1MA6,
1MA7,
1LP7,
1PP7

56

2...8

20

40

9

12

63

23

46

11

71

30

60

14

15

80

40

80

19

20

90

50

100

24

25

100

60

120

28

30

112

132

80

160

38

40

160

110

220

42

45

1LA5,
1LA9,
1LG4,
1LG6,
1MA6,
1LP4,
1LP5,
1PP4,
1PP5

180

2...8

48

48

200

55

55

225

2

60

4...8

140

280

60

250

2

70

4...8

65

280

2

75

4...8

75

80

315

2

65

4...8

170

340

80

90

1LA8,
1PQ8

315

2

140

280

65

70

4...8

170

340

85

85

355

2

140

280

75

80

4...8

170

340

95

95

400

2

80

80

4...8

210

420

110

115

450

2

170

340

90

90

4...8

210

420

120

125


Concentricity of shaft extension, coaxiality and linear movement in accordance with DIN42955 Tolerance R for flange-mounting motors

The following are specified in DIN42955 with Tolerance N (normal) and Tolerance R (reduced):

1. Concentricity tolerances for the shaft extension

2. Coaxiality tolerances for the shaft extension and flange centering

3. Linear movement tolerances for the shaft extension and flange surface

The concentricity of the shaft extension, coaxiality and linear movement according to DIN42955 Tolerance R for flange- mounting motors can be ordered using order codeK04.
This order code can be combined for motors with deep-groove bearings of series 60.., 62.. and 63 This cannot be supplied in combination with parallel roller bearings (e.g. bearings for increased cantilever forces, order codeK20), brake or encoder mounting.

Concentricity of the shaft extension can be ordered according to DIN42955 Tolerance R for types of construction without a flange with order codeL39.



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