Shaft Characteristics - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
1 Installation

1.1.5 Shaft Characteristics

There is a limit to the load that can be applied on the motor shaft. Make sure that the load applied on the radial direction
and thrust direction, when mounted on the machine, is below the tolerable values given below. These loads may affect
the motor output torque, so consider them when designing the machine.
Series
HG46S, HG56S (Straight shaft)
HG96S (Straight shaft)
HG75T, 105T (Taper shaft)
HG75S, 105S (Straight shaft)
200V
series HG54T, 104T, 154T, 224T, 123T, 223T, 142T (Taper shaft)
HG54S, 104S, 154S, 224S, 123S, 223S, 142S (Straight shaft)
HG204S, 354S, 303S, 453S, 703S, 302S (Straight shaft)
HG903S (Straight shaft)
HG-H75T, 105T (Taper shaft)
HG-H75S, 105S (Straight shaft)
HG-H54T, 104T, 154T (Taper shaft)
HG-H54S, 104S, 154S (Straight shaft)
400V
HG-H204S, 354S, 453S, 703S (Straight shaft)
series
HG-H903S (Straight shaft)
HG-H1502S (Straight shaft)
HQ-H903S (Straight shaft)
HQ-H1103S (Straight shaft)
(Note 1) The tolerable radial load and thrust load in the above table are values applied when each motor is used
independently.
(Note 2) The symbol L in the table refers to the value of L below.
L: Length from flange installation surface to center of load mass [mm]
CAUTION
1. Use a flexible coupling when connecting with a ball screw, etc., and keep the shaft core deviation to below the tolerable
radial load of the shaft.
2. When directly installing the gear on the motor shaft, the radial load increases as the diameter of the gear decreases. This
should be carefully considered when designing the machine.
3. When directly installing the pulley on the motor shaft, carefully consider so that the radial load (double the tension)
generated from the timing belt tension is less than the values shown in the table above.
4. In machines where thrust loads such as a worm gear are applied, carefully consider providing separate bearings, etc., on
the machine side so that loads exceeding the tolerable thrust loads are not applied to the motor.
5. Do not apply the loads exceeding the tolerable level. Failure to observe this may lead to the axis or bearing damage.
Servo motor
L
5
Tolerable radial load
245N (L=30)
392N (L=40)
245N (L=33)
245N (L=33)
392N (L=58)
980N (L=55)
2058N (L=79)
2450N (L=85)
245N (L=33)
245N (L=33)
392N (L=58)
980N (L=55)
2058N (L=79)
2450N (L=85)
3234N (L=140)
2500N (L=52.7)
2700N (L=52.7)
Radial load
Thrust load
Tolerable thrust load
98N
147N
147N
147N
490N
490N
980N
980N
147N
147N
490N
490N
980N
980N
1470N
1100N
1500N
IB-1501229-F