Patent ID: 8132991
Filing Date: 2012-03-13
Classification: B23Q,Y10T

Abstract:
1. A protection device for a motor spindle, the motor spindle arranged in a tool housing and rotatable about a central axis that defines an axial direction and a radial direction, the protection device comprising: an inner ring fixedly joined to the motor spindle; an outer ring joined to the housing; preloading members applying an elastically resilient axial preload in the axial direction to the inner ring against the outer ring; and radial damping elements arranged between the inner ring and the outer ring and providing a dampening force in the radial direction operative to dampen vibrations, wherein the inner ring is arranged in the outer ring in a way permitting axial motion of the motor spindle along the central axis and a tilting motion of the motor spindle radially away and toward the central axis.