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TIMKEN bearings and axial clearance must be fit, radial clearance testing may use the following methods.
1, lead testing law
Detection of the TIMKEN 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.
2, racing ruler detection method
For large diameter bearings, a large gap between them, to narrower examiner direct detection. For smaller diameter of imported bearings, a small gap between them, feeler gauge measurements for inconvenience, but bearing backlash must be measured by thickness appropriate examiner.
Detection Shi, first to TIMKEN 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 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.
General bearing 0.02~0.04 mm clamping force. If the clamping force does not meet the standards, you can increase or decrease TIMKEN bearing and bearing joint surface gasket thickness methods to resize, tile back plus cushions is not allowed.
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 TIMKEN 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)
TIMKEN 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 a TIMKEN bearing clearance does not meet the requirements, should be adjusted. Split box often used pads adjust the radial clearance (gap).
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 230/950CAE4 NSK | 950 | 1360 | 300 |
| 239/950CAE4 NSK | 950 | 1250 | 224 |