LENZE
2
Drive dimensioning
Gearbox designs
2-5
L-force gearboxes en 06/2011
IEC motors
Lenze
Coupling hub
Dimensions
drive
Mounting flange
Motor shaft
Size
Design
Flange
size
Standard/
Clamping
Flange
Pitch circle
Centring
size
clamping
ring hub
hub
a
3
e
3
b
3
d
l
min
l
max
63
B14
C90
1A/2B
ö
ö
90
75
60
11
23
23
C160
6C
ö
1)
160
130
110
23
40
C105
1B/3C
ö
ö
105
85
70
30
30
71
B14
C120
4C
120
100
80
14
25
40
C160
2C
ö
ö
160
130
110
25
40
C120
7C
ö
ö
120
100
80
25
40
80
B14
1C
19
25
40
C160
2D
ö
ö
160
130
110
40
50
3E
30
60
B14
C160
1D
ö
160
130
110
50
50
90
2E/2F
ö
ö
24
30
60
B5
A200
4E/3F
ö
ö
188
165
130
50
50
100
B14
C160
1E/1F
ö
ö
160
130
110
28
30
60
112
B5
A250
2G
250
215
180
60
60
132
B5
A250
3G
ö
ö
250
215
180
38
80
80
B5
A300
1G/3H
ö
ö
300
265
230
80
80
160
B5
A350
1H
ö
ö
350
300
250
42
110
110
180
B5
A350
2H
ö
350
300
250
48
110
110
200
B5
A400
1K
ö
400
350
300
55
110
110
225
B5
A450
2K
ö
450
400
350
60
140
140
Gearbox with mounting flange design N
Mounting flange:
˘
Flange dimensions suitable for motors in accordance
with IEC 72/DIN 42948 or NEMA
˘
Shaft in two bearings
˘
Gearbox coupling-half integrated in the shaft
Spider (coupling element):
˘
Torsionally rigid
˘
Isogonic
˘
Low backlash (backlash-free with clamping hub/
clamping ring hub)
Coupling hub:
˘
Standard: Coupling hub with keyway for motor shafts in
accordance with IEC and NEMA
˘
Optional coupling hubs for frequent shocks and load
alternation or reduced coupling backlash:
– Clamping hub with tangential clamping screw for
motor shafts with keyway, no backlash
– Clamping ring hub for motor shafts without keyway,
no backlash, recommended in particular for servo
motors
Geometric assignments for IEC standard motors
See the selection tables for gearboxes with mounting flanges for the permissible input powers and output torques.
Dimensions in [mm]
1)
Only clamping hub possible
Mounting flange
Clamping hub
Spider