16
EMER-FLEX
NEF-W
Spacer Type
Unit:
mm
Notes 1. See p. 12 for extended diameter and long hub dimensions.
With the long hub, the overall length is extended because dimension
“
B
”
is lengthened.
2. All stocked models are manufactured with pilot bores.
Models NEF04W through NEF130W have been stocked with shaft bores machined within the above standard stock bore diameter range. (New JIS key, normal type)
3. The maximum rotation speed depends on the transmission capacity of the coupling.
No balance adjustment has been conducted.
4. The weight, moment of inertia and GD
2
are the values at maximum bore diameter (keyway). For the extended-diameter hub and the long hub, add the individual values listed below.
5. Spacer lengths other than the standard length can be manufactured. For details on the Long Spacer Type, see p. 17.
6. The allowable axial displacement is based on the assumption that the angular misalignment is
“
0
”
.
7. Check the key surface pressure in accordance with your operating conditions (see p. 18). The hub material is S45C.
Increase in Weight, Moment of Inertia and GD
2
per
Extended-Diameter Hub / Long Hub
Model No.
Extended-Dia. Hub
Long Hub
Weight
k
g
Moment of
Inertia
k
g
･
m
2
GD
2
{
k
g
f
･
cm
2
}
Weight
k
g
Moment of
Inertia
k
g
･
m
2
GD
2
{
k
g
f
･
cm
2
}
NEF02W
0.027
0.18
×
10
-4
{
0.74
}
−
−
−
NEF04W
0.046
0.34
×
10
-4
{
1.35
}
0.056
0.12
×
10
-4
{
0.47
}
NEF10W
0.15
1.3
×
10
-4
{
5.18
}
0.20
0.77
×
10
-4
{
3.08
}
NEF18W
0.042
1.1
×
10
-4
{
4.19
}
0.14
0.67
×
10
-4
{
2.69
}
NEF25W
0.13
3.0
×
10
-4
{
11.3
}
0.20
1.3
×
10
-4
{
5.41
}
NEF 45W
0.14
5.8
×
10
-4
{
23.2
}
0.30
2.8
×
10
-4
{
11.2
}
NEF80W
0.16
11
×
10
-4
{
42.6
}
0.47
6.4
×
10
-4
{
25.6
}
NEF130W
0.67
36
×
10
-4
{
144
}
0.99
20
×
10
-4
{
82.1
}
NEF210W
1.09
73
×
10
-4
{
289
}
2.45
64
×
10
-4
{
254
}
NEF340W
0.90
118
×
10
-4
{
473
}
3.85
132
×
10
-4
{
533
}
NEF540W
2.31
273
×
10
-4
{
1089
}
3.91
178
×
10
-4
{
710
}
NEF700W
2.91
431
×
10
-4
{
1724
}
4.41
236
×
10
-4
{
929
}
Model No.
Allowable
Torque
N
･
m
{
k
g
f
･
m
}
Max.
Rotation
Speed
r/min
Rough
Bore
d
Keyway
Standard
Stock Bore
Dia. Range
Keyway Max. Shaft Dia.
φ
Torsional Stiffness
N
･
m/rad
{
k
g
f
･
m/rad
}
Axial Spring
Constant
N/mm{
k
g
f/mm}
A
1
A
2
A
3
Long
Hub
Extended-
Dia. Hub
NEF700W
6860 {700}
3100
70
−
118
130 29.1
×
10
5
{
29.7
×
10
4
}
294 {30 }
337.2 385.6 434
NEF02W
19.6{ 2}
20000
8
14
-
25
−
25
1.00
×
10
4
{
0.10
×
10
4
}
34.3{ 3.5}
63
−
−
NEF04W
39.2{ 4}
20000
8
11
-
22
23
29
1.18
×
10
4
{
0.12
×
10
4
}
20.6{ 2.1}
86.8 101.4 116
NEF10W
98 { 10}
20000 10
12
-
30
32
40
3.92
×
10
4
{
0.4
×
10
4
}
29.4{ 3 }
89.8 104.4 119
NEF18W
176 { 18}
18000 12
14
-
35
35
42
7.84
×
10
4
{
0.8
×
10
4
}
63.7{ 6.5}
104.4 120.7 137
NEF25W
245 { 25}
15000 15
18
-
42
42
48
12.7
×
10
4
{
1.3
×
10
4
}
78.4{ 8 }
120
136.5 153
NEF45W
441 { 45}
13000 15
25
-
50
50
60
21.6
×
10
4
{
2.2
×
10
4
}
109 {11.1}
144.2 163.1 182
NEF80W
784 { 80}
12000 15
30
-
60
60
70
39.2
×
10
4
{
4.0
×
10
4
}
153 {15.6}
164.6 186.8 209
NEF130W
1270 {130}
10000 25
35
-
70
74
80
73.5
×
10
4
{
7.5
×
10
4
}
177 {18.1}
192.4 220.2 248
NEF210W
2060 {210}
8000
25
−
83
90
11.3
×
10
5
{
11.5
×
10
4
}
225 {23 }
216
272.5 329
NEF340W
3330 {340}
7500
45
−
95
110 16.2
×
10
5
{
16.5
×
10
4
}
235 {24 }
249.4 313.2 377
NEF540W
5290 {540}
3400
50
−
109
120 21.4
×
10
5
{
21.8
×
10
4
}
274 {28 }
286.8 337.9 389
PCD
44
49.5
63
71
82
96
111
134
153
172
198
218
Standard
Hub
20
23
32
35
42
50
60
74
83
95
109
118
*
1: Indicate the smaller bore diameter first.
*
2: Indicate the rough bore (symbol “R”) first.
NEF18W - N30J X K40E
Model No.
Type
S: Single Type
W: Spacer Type
Bore Diameter
(Rough bore: R)
Reference Number System (Example)
Type of Hub
N: Standard Hub
K: Extended-dia. Hub
L: Long Hub
B: Square Hub
* See p. 12.
Shaft Coupling Method
J: Keyway of new JIS
normal type
E: Keyway of old JIS
Type 2
C: Clamp (See p. 23)
P2: Power-Lock (See p. 26)
* The number indicates the
number of power locks.
T: Taper Shaft Bore (See p. 45)
Model No.
B
B
L
K
D
D
N
No
Ni
T
T
'
Allowable Misalignment
Weight
k
g
Moment of Inertia
k
g
m
2
GD
2
{
k
g
f cm
2
}
Axial
Displace-
ment
(Note)
NEF700W
101.6 150
276
120 146
164 146 40
-8.4
2
8.0 60
5972
10
-4
{23889
}
NEF02W
20
57
21
24
24
11
2
1.6
0.45
1.66 10
-4
{
6.64
}
NEF04W
25.4
40
67.5
29
25
33
25
15.5
0.9
2
1.6
1.1
5.3
10
-4
{ 21.4 }
NEF10W
25.4
40
81
37
37
46
37
16
1.4
2
2.0
1.4
12
10
-4
{
47 }
NEF18W
28.7
45
93
39
38
48
38
23
6.7
2
2.4
2.3
25
10
-4
{
100
}
NEF25W
33.5
50
104
45
47
58
47
21
4.5
2
2.8
3.0
41
10
-4
{
166
}
NEF45W
41.1
60
126
51
58
69
58
23
4.1
2
3.2
6.6
110
10
-4
{
440
}
NEF80W
47.8
70
143
61
71
81
71
29.5
7.3
2
3.6 10.3
200
10
-4
{
800
}
NEF130W
57.2
85
168
73
92
102
92
20
-7.8
2
5.0 16.1
447
10
-4
{ 1787
}
NEF210W
63.5 120
194
84
103
114 103 32.5 -24
2
5.4 23.2
931
10
-4
{ 3722
}
NEF340W
76.2 140
214
97
118
132 118 19.5 -44.3
2
6.6 40.2
1478
10
-4
{ 5912
}
NEF540W
88.9 140
246
110 135
151 135 24.5 -15.6
2
7.6 55
3014
10
-4
{12055
}
E
F
H
H
L
J
4.9
5.5
32
45
23
6.1
7.5
34
50
36
6.6
7.5
46
66
39
8.3
9
51
66
47
11.2
9
61
78
53
11.7 11.5
71
92
62
11.7 14
84
104
69
16.8 14
106 129
78
17.0 16.5 118 147
89
21.6 16.5 137 166
97
23.9 19
156 191
109
27.2 25.5 169 209
134
mm
Parallel
Misalignment
de
g
Angular
Misalignment
1.8
0.3
0.5
0.55
0.6
0.7
0.8
0.9
1.0
1.2
1.3
1.4
Summary of Contents for ECHT-FLEX NEF130W
Page 1: ...EMER FLEX COUPLING...
Page 9: ...8 EMER FLEX Example of Mounting Example of Mounting...
Page 36: ...35 35 NEW PRODUCTS...
