To prevent the disconnection of a harness 41 and a cable 46 while facilitating the replacement work of component which is installed on a support section of rotation.
Four row tapered roller bearing 15 is incorporated between an inner peripheral face of a housing 3 and an outer peripheral face of an end of a rolling mill. One pair of supporting members which support a sensor device 16 on a part of the inner peripheral face of this housing 3 are internally fit in the counter condition to the end face of an outer ring 19a provided to both ends of an axial direction composing of the tapered roller bearing 15. The sensor device is provided for a strain gauge 28 being a detecting section and the first coil 31 for sending a signal after treating of the output signal from this strain signal as radio signal. The second coil 36 is retained to the other member than the support member 24 for receiving the radio signal from this first coil 31.
KONNO KATSUHIRO
Nakai Shun
Kinzo Koyama
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