摘要:
A motor includes a rotor including a shaft and a rotor body, a bearing fitted to the shaft and rotatably holding the shaft, a bearing holder arranged on the opposite side to the rotor body so as to hold the bearing, a movement regulation member arranged closer to the rotor body than the bearing and separated to regulate movement of the bearing toward the rotor body, a first engagement part provided at the rotor body to be adjacent to the movement regulation member, a first engagement target part provided at the movement regulation member to be adjacent to the rotor body to be able to be engaged with the first engagement target part, a second engagement part provided at the movement regulation member, a second engagement target part provided at the bearing holder, and a coupling member that couples the bearing holder and the movement regulation member.
摘要:
A bearing assembly for a turbocharger includes a turbine wheel-side ball bearing disposed at one axial end of a tubular body, a compressor impeller-side ball bearing disposed at the other axial end of the tubular body, and a bearing housing. The bearing housing includes an opposed wall opposed to the axially outer side of the outer race of the turbine wheel-side ball bearing, and an opposed wall opposed to the axially outer side of the outer race of the compressor impeller-side ball bearing. The outer race of the turbine wheel-side ball bearing and the outer race of the compressor impeller-side ball bearing have axially outer end surfaces which are axially outwardly displaced from the respective axial end surfaces of the tubular body so that oil films form between the respective outer races and the corresponding opposed walls.
摘要:
In an electric power steering apparatus, a worm gear is structured such that a leading end of a leading end shaft of the worm gear is always pressed and supported by a part in a peripheral direction of a diameter enlarged inner diameter portion of a collar which is urged by an elastically urging body, and is always urged toward a side coming close to a center shaft of a worm wheel.
摘要:
A fan includes an impeller and a motor for driving the impeller to rotate. The motor includes a bushing and a rotating shaft penetrating through the bushing. The bushing includes a tube and at least one base connected with one end of the tube. An inner diameter of the tube is smaller than an inner diameter of the base so that the mechanism design variability is enhanced and the efficiency of the fan and the motor is enhanced by effectively utilizing an inner space of the bushing.
摘要:
An inner-rotor-type motor according to the preferred teachings of the present invention includes a housing, a stator, a rotor and a bearing seat. The stator is received in an assembly space of the housing. The rotor is rotatably positioned in the housing via a bearing and extends through a through-hole of the stator. The bearing seat includes a socket having a first recess and second recess and couples to the assembly opening of the assembly space. A stopper is at least a part of the upper wall of the socket and arranged between the first recess and the second recess. The bearing can pass through an end of the socket and be positioned in the first recess, while a circuit board can pass through another end of the socket and be positioned in the second recess. Accordingly, the assembly is simplified and the assembly convenience is improved.
摘要:
The object is to provide a lubricator for rolling bearings which is also capable of cooling the inner ring and which can reduce the resistance of cooling oil when the oil is agitated during high-speed rotation of the bearing.On the back side of an angular ball bearing 1, a cooling oil introducing member 11 is provided which includes a nozzle 12 for discharging cooling oil toward a circumferential groove 6 formed in an end surface of an inner ring 2. The cooling oil introducing member 11 has an extension 11a formed with a seal portion 13 that faces a tapered surface 2b of the inner ring with a gap δ left therebetween. The gap δ of the seal portion is set at 0.2 mm or less to limit the amount of cooling oil that flows through the seal portion 13 into the bearing to a minimum, thereby reducing the resistance of cooling oil when the oil is agitated during high-speed rotation of the angular ball bearing 1.
摘要:
A rolling bearing includes: an inner ring mounted on a shaft to be supported; an outer ring provided around an outer periphery of the inner ring; a plurality of rolling elements rolling while contacting with an inner peripheral face of the outer ring and an outer peripheral face of the inner ring at surfaces thereof; and a retainer supporting the rolling elements. A sliding resistance-reducing film is formed on at least one of a first group being an outer peripheral face of the retainer or the inner peripheral face of the outer ring and a second group being an inner peripheral face of the retainer or the outer peripheral face of the inner ring.
摘要:
A driving system for a separator having a centrifugal drum with a vertical axis of rotation. The driving system includes a vertically aligned driving spindle-configured to accommodate a centrifugal drum. The driving spindle is arranged by a neck bearing and a footstep bearing in an opening of a drive housing. The neck bearing is supported in an axially rigid and radially resilient manner on the machine housing. The neck bearing is constructed as an angular ball bearing and supports the centrifugal-drum on a spherical-shaped supporting surface of the machine housing.
摘要:
To supply a pivot assembly for hard disk drive use that can reliably fix a seal member and solve the problem of out gas, thus reducing the expense and time incidental to the pre-load of a ball bearing. Ball bearings have been joined to both ends of a shaft, and on the outer circumference of these ball bearings, the spacer part is joined to a sleeve disposed between both ball bearings, and a seal member that covers the outer end of the ball bearing has been fixed to the outer circumference of the shaft by laser welding. Because the seal member is fixed by laser welding, the seal member can be reliably fixed and the problem of out gas from the seal member can be solved.
摘要:
A pivot assembly for use in a hard disk drive, in which ball bearings are placed at both ends of a shaft, and a spacer is disposed between outer rings of the ball bearings. The spacer is fixed to the outer rings by laser welding.