1. Installation
1 - 4
1-1-4 Tolerable load of axis
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 also affect the motor output torque, so consider them when designing the machine.
During operation
Servomotor
Tolerable radial
load
Tolerable
thrust load
HA053NS, HA13NS (Straight shaft) 78.4N (L=26) 49N
HA23NS, HA33NS (Straight shaft) 245N (L=30) 147N
HC52T, 53T, 102T, 103T, 152T, 153T (Taper shaft)
HA50LT, HA53LT, HA100LT, HA103LT, HA150LT, HA153LT
(HA40NT, HA80NT, HA43NT, HA83NT)
392N
(L=58)
490N
HC52S, 53S, 102S, 103S, 152S, 153S (Straight shaft)
HA50LS, 53LS, 100LS, 103LS, 150LS, 153LS
(HA40NS, 80NS, 43NS, 83NS)
980N
(L=55)
490N
HC202S, 203S, 352S, 353S, 452S, 453S (Straight shaft)
HC702S, 703S
HA100NS, 103NS, 200NS, 203NS, 300NS, 303NS, HA700NS,
703NS
2058N
(L=79)
490N
HC902S (Straight shaft)
HA500LS, 503LS, HALH11K2S
2450N (L=85) 980N
HA-LH15K2S (Straight shaft) 2940N (L=100) 980N
Caution: The symbols in the table follow the drawing below.
L
Thrust load
Radial load
L : Length from flange installation surface to center of load weight [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 use a rigid coupling as an excessive bending load will be applied on
the shaft and could cause the shaft to break.
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