Bearing clearance and rotational flexibility of test methods
Bearing rotation flexibility generally in a horizontal position check, usually if there is abnormal sound phenomenon and arrest the inner fixed (or handheld inner circle), the outer ring is rotated by hand, check the bearing rotation. Generally speaking, the bearing rotation of long duration, stop slowly, like flexibility. Conversely, rotation time is short, stop suddenly, flexibility is not good. Due to the different types of bearing structure and size, its rotation flexibility should also have different requirements. Such as single row radial ball bearings, single row angular contact ball bearings, the contact between the rolling elements and the ring area is small, these bearings rotate relatively light, and double row radial spherical roller bearings and thrust bearings, due to rolling body and raceway contact area is large, and the weight of the outer ring and small, when examining its rotation flexibility, although with a certain load, but its extent remains brisk and single row radial ball bearings. For large bearings, when it is rotated, there should be no jamming, but the sound is not normally check for rotation.
For tapered bore bearings, the following methods can be used to check the rotation flexibility complement bearings, as follows:
The tapered bore bearings pressed into the mandrel up with a certain radial pre-load, in this pre-load, when a collar is rotated to listen have rolling body should rotate. If the slide instead of rolling rotation, then the ring geometry defect excessive or uneven rolling the size, rotation bearing flexibility is also poor.
