Shaft Lock Hardware; Installation - Mitsubishi Electric JR Series Instruction Manual

3. SHAFT LOCK HARDWARE

Motors that use roller bearings are provided with a shaft lock
hardware to protect the roller bearings from damage due to
movement and vibration of the shaft during shipment.
(Refer to Fig. 1.)
Before coupling the motor to the machine, loosen the
installation bolt, and remove the fitting.
When delivering the motor to the end user after installing it on a
machine, remove the pulley, etc., and fix the shaft so that it will
not move by installing this shaft lock hardware or by using
another appropriate method.

4. INSTALLATION

Observe the following points as incorrect installation will shorten the motor's service life and can
directly lead to accidents.
a. Always use an explosion-proof motor when using the motor in an explosive environment.
b. When installing the motor outdoors, always use the outdoor type motor (IP44). If the installation
environment is severe, use a water-proof motor (IP45). For the details, contact us.
c. The standard motor is not adequate for use in an acidic or alkaline environment. For use in this
type of environment, contact Mitsubishi for a corrosion proof motor.
d. When installing the motor on a ceiling or wall, it could fall depending on the circumstances. Refer
to the catalog or technical documents for details on the applicable range.
e. Install a cover, etc., as a means to prevent foreign matter entering or persons touching the
coupling, belt or pulley that couple the motor and partner machine.
f. Avoid installing the motor in a high-humidity, high-dust, high-temperature place where water or oil
may come in contact. Select a well-ventilated, clean, dry environment.
g. Note that if the motor is used in a dusty area, the heat radiation effect (cooling effect) of the motor
may be degraded, resulting in rise of motor temperature, or dust may enter the bearings, thereby
causing abnormal noise and damage. Ingress of moisture or dust into a drip-proof motor or
open-type motor may cause reduction of dielectric strength or burnout. Take measures to prevent
the ingress.
h. The motor's cooling path will be blocked causing the motor to overheat if the motor is installed near
a wall or near other devices. Always provide a space (generally 20cm or more) when installing the
motor.
i. Select a place where the motor can be easily serviced and inspected.
j. To install, embed the motor in a concrete foundation or secure the motor to a rigid steel structure or
wooden frame so that the shaft will always be horizontal. (When installing the vertical motor, make
sure that the shaft is vertical and the shaft end is facing down.)
Always install special motors according to the specifications. Most cases of abnormal motor
vibration are caused by a weak foundation or incorrect coupling with the partner machine. Make
sure to correctly install and couple the motor.
k. Do not place flammable matters around the motor.
l. Never get on or hang from the motor.
m. Make sure that the nameplate is always visible. Do not place obstacles near the name plate or
remove the nameplate.
n. The outdoor type motor has drain hole, etc. on its bottom. Install the motor in the position shown in
the outline drawing or final diagram. The standard structure of the shaft through hole on the load
side of the outdoor flange type motor is not a waterproof structure. Ensure that the spigot joint
portion of the flange prevents entry of water.
o. After connecting with the machine, treat the machined motor shaft surfaces with a rust-preventive
agent to prevent the motor shaft from rusting.
Installation bolt
Fig. 1 Shaft lock hardware
- 2 -
(Name-B904138-1)