| 摘要 |
PROBLEM TO BE SOLVED: To prevent change of preload for each of thrust angular contact ball bearings 43a and 43b in spite of temperature change in a structure which is installed in a aluminum alloy casing 11 and which supports an output disk 17c on a pair of struts 45a and 45b by means of the ball bearings 43a and 43b. SOLUTION: Pitches for both upper and lower ends of both struts 43a and 43b are controlled by a pair of upper and lower supporting plates 28a and 28b made of a steel plate. Both upper and lower ends of both struts 43a and 43b are combined and fixed on a steel actuator body 44 and a steel connecting plate 50 respectively. The actuator body 44 and connecting plate 50 are supportably fixed in the casing 11. Thus, elastic deformation of both struts 43a and 43b to a curved direction caused by temperature change is prevented. COPYRIGHT: (C)2004,JPO
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