Use feeler gauge or jade lead method to check radial clearance of big head pad of air compressor
Use feeler gauge or jade lead method to check the radial clearance of large head bearing of air compressor, and the adjustment method is as follows:
(1) For the thick wall bearing with adjusting gasket between the two half pads, the thickness of the gasket at the pad mouth can be increased or decreased, the radial clearance of the bearing pad can be changed, and the contact surface of the bearing pad can be checked and scraped by the coloring method.
If there is a pad clearance adjusting angle iron, the radial clearance of the bearing pad can be changed by adjusting the angle iron. The contact surface between the angle iron and the connecting rod head body and the back of the pad shall be inspected by coloring method. After grinding and scraping, it shall reach more than 70% and be evenly distributed.
Check and grind the contact surface between the back of the tile and the hole of the tile with the coloring method, so that the two sides are in close contact with each other, and the bottom is slightly light (in case that the back of the tile can fully fit due to the elastic reason when the two half of the bearing pads are tightened).
(2) For the thin-walled tile, because it has four characteristics: small specific pressure, large elasticity, fast heat conduction and high precision, it is generally not to be scratched, and it is also not adjustable, and there is no adjusting gasket between the two half tiles.
When installing the thin wall tile, attention shall be paid to: the tile cover is tightly matched with the thin wall tile, and there shall be "tightening force", otherwise it will loosen and rotate; in order to prevent "rolling tile", that is, to prevent the back of the tile from rotating in the hole of the tile seat, the back of the tile shall be equipped with positioning devices, such as positioning pins, positioning stop blocks, etc.
Due to the large elasticity of the thin-walled tiles, it is necessary to tighten the upper and lower tiles according to normal conditions, and then check the tile gap and contact conditions (after tightening the turning gear, check the contact conditions after disassembling).
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