How to know the lawn mower spindles in detail.-Hangzhou Shengda Bearing Co., Ltd.

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A spindle assembly for magnetic disks of both-end support type has a hub for fixing the disks, a shaft to which the hub is fixed, a pair of bearings that are spaced in the vertical or horizontal direction, a pre-loading spring for pre-loading one of the bearings, and a housing composed of housing parts which accommodate the hub, shaft, bearings and the pre-loading spring.

The spindle assembly further has an axial reference surface formed on the hub at a right angle concerning the shaft, and another axial reference surface formed on one of the housing parts at a right angle concerning the vertical portion of the bearing associated with one of the housing parts.

When the shaft is mounted in one of the housing parts with the hub and the pre-loading spring fitted therearound, the hub is axially urged by the spring such that the axial reference surface thereon is brought into abutment with the axial reference surface on one of the housing parts. As a result, the axis of the spindle assembly is determined by the abutment between the reference surfaces and by the bearing in one of the housing parts. The bearing in the other of the housing parts is axially aligned with the thus-determined axis of the spindle assembly.