... quality control 2) high swiveling accurany 3) suitable for high speed 4) low friction, long service life3. ... asmoderate axial load. 4)There are many model and sizes for deep groove ball bearings. And they are ... Deep groove ball bearings are non-separable, suitable for high and even very high speed and are robust ... series has 61, 62, 63, 64 series)4. For more details of our products,please visit: www.ldk- ...