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Clearance of KOYO bearings and shaft must be appropriate, can enable the KOYO bearing service life is longer, the detection of KOYO bearing radial clearance may adopt the following methods:
A ruler, match detection method
In larger diameter KOYO bearing, gap between the larger, the direct detection of the gauge narrow. For KOYO bearings, smaller diameter smaller clearance, convenient use feeler, but side bearing gap KOYO, must use the appropriate thickness feeler.
Two, pressure lead detection
KOYO for the detection of bearing clearance lead than using a feeler gauge detection more accurate, but more trouble. Aluminium wire for detection should be soft, diameter is moderate, not too big or too small, the most ideal diameter is 1.5~2 times the gap, the actual work is often used to detect soft wire.
The time of detection, first open the KOYO bearing cover, the choice of the appropriate diameter wire, cut into small pieces of 15~40 mm long, in the Journal on the upper and lower KOYO bearings at the interface, on the cover of KOYO bearing cover, according to the prescribed torque tighten mounting bolts, then loosen the bolts, remove the KOYO bearing cover, with the lead wire thickness micrometer detection flattened, calculated the average value of KOYO bearing top clearance.
If the tip clearance is too small, in the lower tile, with surface plus pad. If it is too large, less pad, scraping or re poured watts.
Bearing preload adjustment: in order to prevent possible bearing on the working process of the rotation and axial movement, in addition to fit interference and the stopper part, the pad is also necessary to use KOYO bearing cover tightly, measuring method and the measuring headspace method, the measured soft lead wire thickness, can be calculated bearing force.
General bearing the pressing force in the 0.02~0.04 mm. If the pressure does not meet the standard, it can be used to increase or decrease the gasket thickness KOYO bearing and KOYO bearing joints at the method to adjust, tile back with no pad.
Sliding bearing KOYO addition to ensure that the radial clearance, should also ensure that the axial clearance. Detection of axial clearance, the axis is moved to an extreme position, and then use a feeler or dial indicator measuring axis from one extreme position to another extreme position runout of axial clearance. When the sliding KOYO bearing clearance is not required, should be adjusted. To open KOYO bearings are often used to adjust the radial clearance.