Date: 2013-08-20

Cylindrical roller bearings lead-testing law

Lead testing method for cylindrical roller bearing clearance with a feeler gauge testing accurate, but more trouble. Testing with the aluminium wire should be soft, should not be too large or too small in diameter, the ideal diameter is 1.5~2 times the gap, in practice usually use soft lead wire for testing. Detection Shi, first put bearing cover open, selection appropriate diameter of lead wires, will its cut into 15~40 mm long of small paragraph, put in axis neck Shang and the upper and lower bearing points interface Department, cover Shang cylindrical roll child bearing cover, by provides torque twist tight fixed bolt, then in twist pine bolt, remove bearing cover, with micrometer detection pressure flat of lead wires thickness, please out cylindrical roll child bearing gap of average.
If the top gap is too small, can be combined in the upper and lower bearing pad on the surface. If too large, pads, scratch reduction Institute or re-cast w.
Bush tight force of adjustment: to prevent Bush in work process in the may occurred of turned and axis to moved, in addition to tie had ying and ended moving parts outside, Bush also must with cylindrical roll child bearing cover to pressure tight, measurement method and measuring top gap method as, measured soft lead wires thickness outside, available calculation out Bush tight force (with Bush compression Hou of elastic deformation volume to said)
General bearing clamping force in the 0.02~0.04 mm. If the clamping force is not standards-compliant, you can increase or decrease of cylindrical roller bearing with housing jiehe Mian method to adjust the thickness of gasket, tile back-no pad.
Cylindrical roller bearings other than to ensure that the radial clearance, should also ensure that the axial clearance. Upon detection of the axial clearance, moves the axis to an extreme position, and then with a feeler gauge or dial gauge measurement axis from one extreme position to another location of the play that is the axial clearance. When the clearance of cylindrical roller bearing does not meet the requirements, should be adjusted.

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