| 摘要 |
The present invention relates to a spindle assembly for a short blast, which includes: an assembly body in which a spindle connected to a power apparatus is installed in a perforated interior thereof in a rotatable manner, in which fixing units protruding toward the shaft center thereof are provided inner peripheries of opposite ends thereof, and lubricant introduction holes perforated vertically and communicated with an interior thereof are formed at upper portions of opposite ends thereof; first and second double-acting taper roller bearings inserted into inner circumferences of interiors of opposite ends of the assembly body to be positioned on the outer sides of the fixing units of the assembly body and positioned at lower portions of the lubricant introduction hole; first and second closed ball bearings located to contact the outer surfaces of the first and second double-acting taper roller bearings; first and second covers including flanges to opposite ends of the assembly body, connectors provided at lower portions of the flanges, sealing parts protruding from outer ends of the connectors toward the shaft center to form fixing body accommodating recesses, and fixing parts protruding from inner ends of the connectors inwards to contract the first and second closed ball bearings; and first and second fixing bodies accommodated in the fixing body accommodating recesses of the first and second covers and installed at opposite ends of the spindle to prevent separation of the first and second closed ball bearings. The present invention can handle vibrations generated due to high speed rotations of the spindle and prevent leakage of lubricant, thereby improving durability. |
