To provide a grease feeder for an electrically-operated servo actuator for regulation of the water quantity in a water wheel, which enables feeding of grease in operation and will not impair the operating force in reverse rotation, either.
An electrically-operated servo actuator 30 is equipped with a motor 32 consisting of a stator 36 and a rotor 37 and a thrust-converting mechanism 33, consisting of a nut body 40 attached rotatably to the rotor 37 and a screw shaft 39 screwed in a nut body 40. The nut body 40 is attached to a support bracket 41 fixed to the rotor 37, and support brackets 41 and 42 are rotatably supported by a housing 31 of the actuator. This grease feeder is provided with a greasing nipple 47 at the center of the support bracket 42 and is also provided with a grease-feeding path 48, which leads to the greasing port 40b of the nut body 40 from this greasing nipple 47, which rotates in a body with the rotor 37.
COPYRIGHT: (C)2004,JPO
Takeshi Hasegawa
Hiroshi Sugai
Hideaki Imai
株式会社日立製作所
| JP62277045A | ||||
| JP2002138940A | ||||
| JP2000145929A | ||||
| JP57131659U |
Takahiro Arita