low-voltage

Squirrel-cage motors
Technical information
Mechanical design
2
■ Bearings (continued)
Selection of bearings for 1LA, 1LG, and 1MA motors, basic design
For motors
Frame size
Type
1LA5 . . .
1LA6 . . .
1LA7 . . .
1LA9 . . .
1MA6 . . .
1MA7 . . .
Number of poles Drive-end bearing Non-drive end
bearing
Horizontal motors Vertical motors Horizontal motors Vertical motors
56 M . . . . 05 . all 6201 2ZC3 6201 2ZC3 Fig.1
Fig. No.
on
pages
2/34 and
2/35
63 M . . . . 06 . all 6201 2ZC3 6201 2ZC3
71 M . . . . 07 . all 6202 2ZC3 6202 2ZC3
80 M . . . . 08 . all 6004 2ZC3 6004 2ZC3
90 S/L . . . . 09 . all 6205 2ZC3 6004 2ZC3
100 L . . . . 10 . all 6206 2ZC3 1 ) 6205 2ZC3 1 )
112 M . . . . 113 all 6206 2ZC3 1 ) 6205 2ZC3 1 )
132 S/M . . . . 13 . all 6208 2ZC3 1 ) 6208 2ZC3 1 )
160 M/L . . . . 16 . all 6209 2ZC3 1 ) 6209 2ZC3 1 ) Fig. 2
180 M/L . . . . 18 . all 6210 ZC3 1 ) 6210 ZC3 1 ) Fig. 4
200 L . . . . 20 . all 6212 ZC3 1 ) 6212 ZC3 1 )
225 S/M . . . . 22 . all 6213 ZC3 1 ) 6212 ZC3 1 )
250 M . . . . 253 all 6215 ZC3 1 ) 6215 ZC3 1 )
280 S
280 M
315 S
315 M
315 L . . . . 316
. . . . 317
. . . . 318
. . . . 28 . á 2
â
ã 4 to 8
. . . . 310 á 2
â
. . . . 313 ã 4 to 8
2
4 to 8
6216 C3
6317 C3
6217 C3
6319 C3
6217 C3
6319 C3
6217 C3 3 )
6319 C3
6216 C3
6317 C3
6217 C3
6319 C3
6217 C3
6319 C3
7217 B 3 )
6319 C3
1LG4 . . .
1LG6 . . .
180 M/L . . . . 18 . all 6210ZC3 2 ) 6210ZC3 2 ) Fig. 4
200 L . . . . 20 . all 6212ZC3 2 ) 6212ZC3 2 )
225 S
. . . . 22 . all 6213ZC3 2 ) 6213ZC3 2 )
225 M
250 M . . . . 25 . all 6215ZC3 2 ) 6215ZC3 2 )
280 S
280 M
315 S
315 M
. . . . 28 . 2
4 to 8
á
. . . . 310
. . . . 313
315 L . . . . 316
. . . . 317
. . . . 318
2
4 to 8
2
4 to 8
6217 C3
6317 C3
6219 C3
6319 C3
6219 C3
6319 C3
6217 C3
6317 C3
6219 C3
6319 C3
6219 C3
6319 C3
Fig. 5
Fig. 5
7219 BEP Fig. 5
1LA8 . . .
315 . . . . 31 . 2 to 8 6218 C3 6218 C3 Fig. 6
355 . . . . 35 . 2
6218 C3
7218 B + 6218 C3 6218 C3
and
. . . . 35 . 4 to 8
6220 C3
7220 B + 6220 C3 6220 C3
Fig. 7
400 . . . . 40 .
. . . . 40 .
450 . . . . 45 .
. . . . 45 .
á
â
ã
â
ã
á
â
ã
2
4 to 8
2
4 to 8
6218 C3
6224 C3
6220 C3
6226 C3
7218 B + 6218 C3
7224 B + 6224 C3
7220 B + 6220 C3
7226 B + 6226 C3
6218 C3
6224 C3
6220 C3
6226 C3
The bearing selection tables are
only intended for planning purposes.
Authoritative information
on the actual type of bearings
fitted in motors already supplied
can be obtained from the factory
by quoting the serial number
or read off on the lubrication instruction
plate of 1LA8 motors.
When deep-groove ball bearings
with sideplates are used,
the sideplate is on the inside.
Fig. 3 (page 2/34) shows the
non-standard design with a located
bearing at the drive end
for 1LA5, 1LA7, 1LA9, 1MA6,
and 1MA7 motors.
1) Deep-groove bearings are used
for regreasable designs (K40)
(does not apply to 1LA6 up to
size 160).
2) No deep-grove bearings are used
for regreasable designs (K40).
3) Only at 50 Hz.
2/30
Siemens M 11 · 2003/2004