Clearance of the SKF bearings and shafts must be fit, radial clearance testing may use the following methods.
1, racing ruler detection network commonly used for SKF bearing type: rolling mill bearings, spherical plain bearings, slewing bearings, spherical bearings, thrust ball bearings, single direction bearings, full complement cylindrical roller bearings, thrust roller bearings, linear motion bearings.
For large diameter bearings, a large gap between them, to narrower examiner direct detection. For the smaller diameter of the bearing, a small gap between them, feeler gauge measurements for inconvenience, but clearance of the SKF bearings, must be measured by thickness appropriate examiner.
2, lead testing law
Detection of the SKF bearing clearances lead examiner detection for more accurate, but more trouble. Aluminum wire used for testing should be soft, should not be too large or too small in diameter, the best 1.5~2 times the diameter for the gap, are typically used in practical work with a soft wire for testing.
Detection Shi, first to bearing cover open, selection appropriate diameter of wire, will its stopped into 15~40 mm long of small paragraph, placed in axis neck Shang and the upper and lower bearing min interface Department, cover Shang bearing cover, by provides torque screwed tight fixed bolt, then in screwed pine bolt, remove bearing cover, with micrometers detection pressure flat of wire thickness, seeking out SKF bearing top gap of average. If the top gap is too small, you can put pad on top, bottom w joint surface. If it is too large, shave down the mat, the Institute or cast again w.
Bush tight force of adjustment: to prevent Bush in work process in the may occurs of turning and axis to moved, in addition to tie had ying and ended dynamic parts outside, Bush also must with SKF bearing cover to pressure tight, measurement method and measuring top gap method as, measured soft wire thickness outside, available calculation out Bush tight force (with Bush compression Hou of elastic deformation volume to said)
General bearing 0.02~0.04 mm clamping force. If the clamping force does not meet the standards, you can increase or decrease in bearing and bearing joint surface gasket thickness methods to resize, tile back plus cushions is not allowed.
SKF bearings other than to ensure that the radial clearance, should also ensure that the axial clearance. The axial clearance is detected, the axis moves to an extreme position, and then using a feeler gauge or dial gauge measurement axis from one extreme to another extreme play namely axial clearance.
When clearance for SKF bearings are not in conformity with provisions, should be adjusted. Split box often used pads adjust the radial clearance (gap).


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