SIEMENS
FLENDER Standard Couplings
Torsionally rigid all-steel couplings — N-ARPEX ARN-6 series
Clamping hub
6/8
Siemens MD 10.1 N · 04/2017
6
■
Selection and ordering data
Clamping hub types 124 and 125 can be combined with any
sleeve. It should be noted that the clamping hub can be used
only as an N hub (hub core outside).
Function
N-ARPEX clamping hubs transmit the torque with the aid of an
elastic press fit. By pulling the clamping ring on by means of the
tightening screws the necessary surface pressure is applied in
the "shaft/hub" contact area. After the tightening operation the
clamping ring lies up against the clamping hub.
Transmissible torque
The clamping connections are designed to enable the specified
maximum torques to be transmitted. These maximum torques
may not be exceeded, even under overload conditions.
Fitting clearance and surface roughness
The transmissible torques take into account the maximum fitting
clearance for the bore and shaft of quality IT6 and the maximum
surface roughness. For other shaft tolerances reduced torques
or other bore tolerances must be used. The surface roughness
of the shaft should be R
a
1.6 μm.
The fit pairing G6/h6 should be used wherever possible.
Different shaft tolerances must be stated in the order. They are
stated with "-Z" on the end of the Article No. and the order code
"Y26" for the fit.
Ordering example:
N-ARPEX clamping hub type 124, size 133-6,
"-Z" with supplementary data
(
2LC0370-3LM90-0AA0-Z
),
Shaft ØD1 = 40k6
(
L0W
/ for an overview of order codes for bore size,
see
page 6/12)
(
Y26
/ fit stated here)
Article No.:
2LC0370-3LM90-0AA0-Z
L0W+Y26
(Y26:k6)
Clamping hub type 125 (standard version)
Clamping hub type 124
ØDA
NL1/NL2
G_MD10_XX_00248
ØND1/ND2
ØD1/D2
ØDA
G_MD10_XX_00247
NL1/NL2
ØND1/ND2
ØD1/D2
Size
Clamping
hub
Dimensions in mm
Mass moment of
inertia
Article No.
Weight
DA
Type
D1
ND
NL
J
Further information on
the structure of the
Article No.
is provided in
Catalog MD 10.1,
Chapter 3
m
Keyway DIN 6885-1
min.
max.
mm
kgm
2
kg
86-6
124
19
25
50
35
0.0003
2LC0370-0LM90-0AA0
0.5
125
2LC0370-0LN90-0AA0
103-6
124
25
38
67
40
0.0009
2LC0370-1LM90-0AA0
0.9
125
2LC0370-1LN90-0AA0
122-6
124
30
42
77
45
0.0021
2LC0370-2LM90-0AA0
1.5
125
2LC0370-2LN90-0AA0
133-6
124
32
50
88
50
0.0034
2LC0370-3LM90-0AA0
2.0
125
2LC0370-3LN90-0AA0
159-6
124
35
60
105
55
0.0077
2LC0370-4LM90-0AA0
3.2
125
2LC0370-4LN90-0AA0
174-6
124
40
70
120
65
0.0135
2LC0370-5LM90-0AA0
4.6
125
2LC0370-5LN90-0AA0
184-6
124
45
70
126
70
0.0195
2LC0370-6LM90-0AA0
5.9
125
2LC0370-6LN90-0AA0
203-6
124
50
80
139
75
0.0298
2LC0370-7LM90-0AA0
7.4
125
2LC0370-7LN90-0AA0
© Siemens AG 2017