Catalog

1
IEC Squirrel-Cage Motors
Introduction
General technical data
Shaft extension with standard dimensions, without featherkey way
For motor series 1LA8, 1PQ8 and 1LL8, the standard shaft extension
can be ordered with standard dimensions without a featherkey
way.
Order code K42
Other motor series must be ordered with order code Y55.
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 code M65
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 code Y55
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
Permissible changes to the shaft extension:
Concentricity of shaft extension, coaxiality and linear movement
in accordance with DIN 42955 Tolerance R for flange-mounting
motors
The following are specified in DIN 42955 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
1/56 Siemens D 81.1 · 2006
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 code Y55 and second standard shaft extension K16
(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 nonstandard
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,
56 2 ... 8 20 40 9 12
1LA7,
63 23 46 11
1LA9,
1MA6,
71 30 60 14 15
1MA7,
80 40 80 19 20
1LP7,
90 50 100 24 25
1PP7
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
1LA8,
1PQ8
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
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
1)
At maximum permissible diameter, a step increase in shaft diameter is not possible.
The concentricity of the shaft extension, coaxiality and linear
movement according to DIN 42955 Tolerance R for flangemounting
motors can be ordered using order code K04.
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 code K20), brake or encoder
mounting.
Concentricity of the shaft extension can be ordered according to
DIN 42955 Tolerance R for types of construction without a flange
with order code L39.