Unidirectional bearing can also be called needle clutch, it can rotate freely in one direction, in the other direction will be locked.In fact, unidirectional bearings are widely used in textile machinery, transmission machinery and other aspects. In fact, unidirectional bearings are also used in our more common money counting machine.So what kind of structure is the one-way bearing?How does it work?

In fact, no matter what the structure of one-way bearings, its principle is the principle of clamping.In terms of structure, one is ramp and roller type.The outer ring of the bearing here is the same as that of ordinary bearings, which is a bobbin type outer ring.But the structure of its inner circle is unusual. The inner circle is a circle with a slope.In addition, it has a roller that is always in contact with the inner and outer ring and a spring that contacts with the roller.The working face of the roller is a slope. When the bearing turns along, the roller is in the downhill state. The downhill space is large, and the roller will not be affected.When turning against, the roller is uphill, the uphill place is narrow, the roller is stuck, and the bearing is locked.

The structure of the other one-way SKF bearing is a wedge type structure.This kind of bearing is provided with a set of CAM wedge between the inner ring and the outer ring of the bearing.The CAM has two diameters of different sizes, in which the size of the long warp is greater than the distance between the inner and outer rings, while the short warp is smaller than the distance between the inner and outer rings of the bearing.A cylindrical winding spring is connected end to end between the wedges to form an annular spring, which is arranged on the fulcrum of the wedges. Through the action of the spring, the wedges can be reset.

The invention of unidirectional bearings has solved many problems that need to be prevented from reversing.In many household appliances such as washing machines and so on have played a great role.In some transport machinery such as material transport can effectively prevent the material back.Therefore, the standardized structure makes a lot of machinery do not need to design a special anti-reverse structure separately, saving a lot of manpower and material resources, so the development of one-way bearings has a very broad prospect in the future.