Thickness and automatic transmission wheel slip based SKF needle roller bearings with a ring bearing the same bearing. Since the thickness of the same slide SKF bearings, plain bearings can achieve the same level of the above passage and quantity control, so this kind of alternative to the sliding SKF bearings SKF bearings.

Hub-type needle bearing ring with a ring of using only 0.85mm thick thin-walled design, thus the thickness of the bearing section from the original 3 ~ 3.5mm reduced to 1.5mm. Optimization of the thin ring seals the gap with the rotating shaft, it is possible to realize fuel control and internal slide bearings above the level of the bearing through the same. In addition, using a rotary bearing, improve the anti-sintering, reducing the friction loss of the low rotation region.