Electromagnetic speed-regulating motor (figure) The quality of the armature balance is the key to the service life of the speed-regulating motor. However, in the dynamic balancing, the general motor factory often uses the method of drilling to remove weight or weld weight gain, especially The armature portion of the armature is usually welded with iron to achieve the effect of counterweight, but welding the iron at the position of the armature will inevitably
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