Tsubaki ECHT-FLEX NEF130W, Manual

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17
TRANSMISSION CAPACITY / DIMENSIONS
NEF-W
Long Spacer Type
The NEF Series Long Spacer Type of coupling enables the use of a floating shaft when there is some distance between devices. Depending on the
spacer length, the Long Spacer Type of coupling can also absorb a large amount of eccentricity. This coupling is suitable for line shaft drives to miter
gearboxes.
Formula for Torsional Stiffness
Calculation of Vertical Long Spacer Type
Use the following formula to calculate the torsional
stiffness of vertical Long Spacer Type coupling.
Approx. Weight of Long Spacer Type Coupling / Moment of
Inertia and GD
2 Calculation Formulae
Torsional Stiffness Calculation for Vertical Long Spacer Type
If dimension “ J ” for each coupling size exceeds the value listed in the following table when a
Long Spacer Type is installed vertically, a thrust supporter is required as shown on the right.
T
×
10
4
（
J
−
J
1
） ・
K
1
＋
K
2
N
・
m/rad
{k
g
f
・
m/rad}
Unit:
J : The dimension “ J ” given in the external drawing (distance between
hub end faces) in
mm
.
T : The allowable torque given in the transmission capacity table
in
N
･
m{k
g
f
･
m}
Substitute the constants given in the above table for J1,
K
1
and
K
2
.
Use the following formula to calculate the
weight of the Long Spacer Type (at
maximum bore diameter).
Unit:
k
g
Weight ＝
W
1
（
J
−
J
1
）＋
W
2
J
: Dimension “ J ” (distance between hub end faces) in
mm
.
Substitute the constants given in the above table for
J
1
,
W
1
,
W
2
,
d
1
,
d
2
,
G
1
and
G
2
.
Use the following formulae to calculate the
moment of inertia and GD
2 (at maximum
bore diameter).
GD
2 ＝
W
1
×
d
1
（
J
−
J
1
）＋
G
1
Unit:
k
g
f
・
cm
2
Moment of inertia ＝
W
1
×
d
2
（
J
−
J
1
）＋
G
2
Unit:
k
g
・
cm
2
* This formula applies to cases where dimension “ J ” exceeds “ J
1
” (Unit:
cm
).
N
3
N
2
N
1
Model No.
J
1
K
1
K
2
NEF04W
63 0.0489 32.0
NEF10W 64 0.0472 22.2
NEF18W 74 0.0617 22.5
NEF25W
89.4 0.0475 19.2
NEF45W 105.6 0.0435 20.0
NEF80W 119 0.0501 20.0
NEF130W 148 0.0302 17.3
NEF210W 161 0.0333 18.3
NEF340W 195.6 0.0317 20.6
NEF540W 225.6 0.0276 49.5
NEF700W 257.6 0.0286 47.1
NEH09W
258 0.0360 17.0
NEH14W 292 0.0560 16.3
NEH20W 330 0.0374 15.4
NEH30W
373 0.0374 14.3
NEH41W 390 0.0354 15.8
Weight Moment of Inertia, GD
2
Model No.
W
1
W
2
J
1
G
1
d
1
G
2
d
2
NEF04W
0.04 1.3 6.3 16 8.7 4 2.17
NEF10W 0.05 2.0 6.4 48 16.3 12 4.063
NEF18W 0.06 3.1 7.4 100 18.9
25
4.72
NEF25W
0.08 4.4 8.9 171 26.4 43 6.59
NEF45W 0.10 8.0 10.6 446 41.3 112 10.33
NEF80W 0.11 13.6 11.9 872 55.1
218
13.78
NEF130W
0.18 22.7 14.8 2137 88.3 534 22.06
NEF340W 0.25 52.7 19.6 6722 161.7
1681
40.42
NEF540W 0.36 68.8 22.6 14363 208.4 3591 52.09
NEF700W 0.38 78.4 25.8 26687 241.9 6672 60.47
NEH09W
0.44 64.8 25.8 22086 217.5 5522 54.38
NEH14W 0.44 72.4 29.2 24107 217.5 6027 54.38
NEH20W 0.65 109 33 47625 311.0
11906
77.74
NEH30W
0.75 150 37.3 82770 407.5
461.2
20693 101.87
NEH41W 0.95 201 39 125437 31359 115.3
NEF210W 0.21 31.6 16.1 4066 113.6 1017 28.41
Unit:
mm
Model No.
NEH14W
1767
NEH20W 1277
NEH30W 1747
NEH41W
1355
Model No. Model No. Dimension “ J ” Dimension “ J ”
NEF04W NEF130W
1910
NEF10W NEF210W 1924
NEF18W NEF340W 2143
NEF25W NEF540W
1542
NEF45W NEF700W 1463
NEF80W NEH09W 1153
Dimension “ J ”
319
408
1171
1429
1386
1505
Vertical Long Spacer Type
Thrust supporter
461.2