Tsubaki ECHT-FLEX NEF130W, Manual

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9 9
PRODUCT SELECTION
2. Shaft Diameter
Make sure that the target shaft diameter does not exceed the allowable mounting shaft diameter for the coupling.
With the Power-Lock, check the power lock size, quantity and transmission torque.
With the clamp type, make sure that the correct torque determined in Item (1) does not exceed the allowable transmission torque for the clamp.
3. Maximum Rotation Speed for Long Spacer Types
When using the Long Spacer Type coupling at a high speed rotation, the rotation speed must be checked in order to avoid the resonance point.
When selecting the Long Spacer Type coupling, make sure that the maximum dimension
“ J ” and the rotation speed for each model are not exceeded.
If the operating rotation speed exceeds the specified value, a larger model number must be selected.
If the operating rotation speed is not within the following range, or if the selection of a larger model number is not an option, a
“ High-Speed Type
Long Spacer ” coupling can be manufactured as one solution. (See p. 36)
Service Factor (SF) Table
1. Correct torque calculation
1-1. When connecting to a servo motor or stepping motor
To determine the correct torque, multiply the maximum torque of the servo motor or
stepping motor by the service factor (SF) corresponding to the type of load listed in the
table below.
1-2. When connecting to a general-purpose motor
To determine the correct torque, multiply the load torque calculated with the following
formula by the service factor (SF) corresponding to the type of load listed in the table on
the right.
Service Factor (SF) Table
Type of Load Constant Load
1.2
Service Factor (SF)
Mid-Level Variable Load
1.4
Heavy Variable Load
1.5
Type of Load
Type of Motor
General-Purpose Motor / Gas Turbine Engine
Low Moment
of Inertia
High Moment
of Inertia
4-Cylinder 6-Cylinder 8-Cylinder
Constant Load
1.5 - 1.75 1.75 - 2.0 2.5 - 4.0 2.0 - 2.5 1.5 - 2.0
Mid-Level Variable Load
2.0 - 2.5 2.5 - 3.0 4.0 - 5.0 2.5 - 3.5 2.0 - 3.0
Heavy Variable Load
3.0 - 4.5 4.5 - 6.0 4.5 - 5.5 3.0 - 4.0 2.5 - 3.5
Ｔ ＝
60000×P
Ｔ ＝
974×P
2 π × ｎ n
Ｔ ＝Ｔ×SF
T
＝ Load torque
N · m {kgf · m}
P
＝ Transmission power
kW
n
＝ Rotation speed
r/min
T
＝ Correct torque
N · m {kgf · m}
 
 
 
Long Spacer Maximum Length (Dimension
“
J
”
)
3600
NEF 04W
NEF 10W
NEF 18W
NEF 25W
NEF 45W
NEF 80W
NEF130W
NEF210W
NEF340W
NEF540W
NEF700W
NEH 09W
NEH 14W
NEH 20W
NEH 30W
NEH 41W
Unit:
mm
2000 1800 1500 1200 1000 900 750 720 600 500 400 300 200 150
980 1310 1380 1510 1680 1840 1940 2130 2170 2380 2610 2910 3360 4120 4750
1120 1500 1580 1730 1940 2120 2230 2450 2500 2730 2990 3350 3860 4730 5460
1180 1580 1660 1820 2040 2230 2350 2570 2620 2870 3150 3520 4060 4970 5740
1310 1760 1850 2030 2260 2480 2610 2860 2920 3190 3500 3910 4510 5520
1440 1930 2030 2230 2490 2720 2870 3140 3210 3510 3840 4290 4960
1560 2090 2200 2410 2690 2950 3100 3400 3470 3800 4160 4650 5360
1780 2380 2510 2750 3070 3360 3540 3870 3950 4330 4740 5290
1890 2520 2660 2910 3250 3560 3750 4100 4190 4580 5020 5610
2024 2720 2870 3130 3500 3830 4040 4420 4510 4930 5400
2180 2910 3070 3360 3750 4100 4320 4730 4820 5280 5780
2270 3030 3190 3490 3890 4260 4490 4910 5010 5490
2190 2930 3090 3380 3780 4130 4360 4770 4870 5330 5830
2190 2930 3090 3380 3780 4130 4360 4770 4870 5330 5830
2400 3200 3380 3690 4130 4520 4760 5210 5320 5820
2570 3430 3610 3960 4420 4840 5100 5580 5690
2650 3540 3730 4080 4560 4990 5260 5760 5870
Operating Rotation Speed
r/min
Model No.
*
If an impact load is expected, determine the correct torque by multiplying the
maximum torque rated for the motor by an impact factor of 1 to 2.5.
*
When clamp or power lock method is used, do not allow torque that is larger than
the shaft bore friction transmission torque (see p. 25 and p. 31), including the
starting torque, even for an instant.