
3.ROTOR INSTRUCTION B-65292EN/03
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3.3 HEAT SHRINK FITTING
• Heat shrink fitting is recommended for mounting method of a
rotor to a spindle. Use press machine when the interference is
large. But in this case, avoid the deformation of the spindle and
the rotor.
• When mounting the rotor, the rotor has to be heated in an
electric oven to a maximum temperature of 200°C. 180°C is
preferable. When heated to 200°C, the rotor color may change.
But this will not affect the characteristics of the rotor.
• For the high speed type rotor, cool and heat shrink fitting is
recommended, as the heat expansion of each part that is used in
the rotor is different. Cool the spindle (in refrigerator), and heat
the rotor (in electric oven), and then fit them.
• If guided at the spindle shaft side at the insertion, it can be
assembled smoothly
Guide
(Smaller than
the rotor inner
diameter)
Chamfer is
better.
WARNING
When shrinking the rotor or spindle, it is very hot
and heavy. Therefore, be careful not to get hurt or
burnt.