Abstract:
Electric miniature motor comprises bearings; stationary assemblies having end faces; and metallic configurations disposed at the end faces for seating the bearings. At least one of the bearings is a sleeve bearing of sintered material inserted into a massive ring of weldable material, the outer diameter of which is smaller than the inner diameter of the corresponding configuration for seating; and the ring is connected by at least one welded joint to the configuration for seating.
Abstract:
A generator includes an aluminum housing having an end plate secured to a housing portion. The housing portion and the end plate respectively include first and second bores. The end plate includes a wall with a boss providing a bore. The wall provides a lubrication passage in fluid communication with the bore. An idler gear includes a shaft having opposing first and second ends respectively supported in the first and second bores. A generator is arranged within the housing and is rotationally coupled to the idler gear. First and second impregnated carbon journal bearings respectively include a first inner and outer bearing diameter and a second inner and outer bearing diameter. The first and second outer bearing diameters are in press fit relationship with the first and second bores respectively. The inner diameters are fixed relative to their respective outer diameter.
Abstract:
A motor device may include a motor main body provided with a stator part and a rotation shaft, an output shaft provided with a lead screw part, a motor frame provided with an opposite-to-output side support part that supports the stator part and an opposite-to-output side of the output shaft, and which is provided with an output side support part which supports an output side of the output shaft, and a gear part for transmitting a driving force of the rotation shaft to the output shaft. The opposite-to-output side support part rotatably supports the rotation shaft and further rotatably supports the opposite-to-output side of the output shaft.
Abstract:
The rotary shaft of a closed-type electrically driven compressor is rotatably supported by self-aligning bearings. Each bearing has a spherical bearing member, a supporting member and a bushing. The supporting member has a concave spherical inner surface and a cylindrical inner surface. The bushing has a concave spherical inner surface and a cylindrical outer surface and is fitted into a space defined by the cylindrical inner surface of the supporting member. The concave spherical inner surface of the supporting member and that of the bushing movably support the spherical bearing member.
Abstract:
A high speed drill spindle shaft is supported by lower and upper conically shaped rubber bushings matching corresponding tapered end portions on the shaft, the lower and upper tapers being in opposite directions. A spring urges the rubber bearings in the axial direction of increasing taper so that there is maintained a substantially zero clearance with the tapered end portions of the shaft. Water is introduced to the tapered engaging areas of the rubber bearings and the shaft tapered surfaces to essentially ''''float'''' the shaft, any changes in the dimensions of the rubber bearings being accommodated by axial movement of the bearings relative to the shaft to maintain the desired substantially zero clearance and yet prevent binding or excessive contact pressure.