What is Super Nut?

Nuts, commonly known as caps, are fasteners that screw together with bolts or screws for secure connection and are essential components of all manufacturing machinery. Nuts securely connect mechanical equipment. The internal threads allow nuts and bolts of equal specifications to be connected. The Super Nut's working principle is to decompose a significant preload force axially into several smaller components. By leveraging the principle of thread multiplication, the axial preload is applied to the connected components by symmetrically tightening the locking screws one by one. Tightening the locking screws, evenly distributed around the circumference, generates a significant and uniform axial thrust on the hard gasket, pre-tightening the nut itself.

The Super Nut utilizes two nuts, one concave and one convex, on a single screw. During machining, the center is slightly offset (eccentric machining), acting as a wedge. The concave nut on the upper side is not machined off-center (rounded machining), thus creating a hammer-driven wedge. By combining these two nuts into one, loosening is effectively eliminated.

Super nuts can directly replace hex nuts, cap nuts, bolts, and more. Preload nuts of any size can be installed and removed using only hand tools. This is safe, accurate, and economical. Locknut Working Principle: Locknuts utilize friction between the nut and bolt for self-locking. However, this self-locking reliability decreases under dynamic loads. In critical applications, we employ anti-loosening measures to ensure reliable nut locking. Locknuts are one such anti-loosening measure. Locknuts are categorized as follows: The first type uses two identical nuts screwed onto the same bolt, applying a tightening torque between the two nuts to ensure a secure bolt connection.

The second type is a dedicated locknut, which requires use with a lock washer. Dedicated locknuts are not hexagonal nuts, but rather round nuts with three, four, six, or eight notches around the circumference (depending on nut size and manufacturer's product line). These notches serve as a foothold for the tightening tool and as the snap-in points for the lock washer.

The third type involves drilling threaded holes (usually two, spaced 90 degrees apart) through the outer diameter of the nut to the inner threaded surface. These holes are used to insert small-diameter countersunk screws. This applies a centripetal force to the threads, preventing the locknut from loosening. Advantages of Super Nuts

Super nuts are made of high-quality alloy steel and specially treated to achieve high strength and fatigue resistance. The thread strength of Super nuts is approximately double that of ordinary nuts, meaning they are more secure and reliable, maintaining exceptionally stable performance in a variety of challenging environments.

1. Strong Locking Force:

The Super nut's unique spring-loaded design deforms during tightening, providing additional locking force by locking the stud/bolt in pure tension. Each bolt maintains the same preload, ensuring a secure hold. 2. Corrosion Resistance: Surface treatments (such as galvanizing and blackening) on Super nuts extend their service life and enhance corrosion and wear resistance. 3. Wide Application: Super nuts are suitable for a wide range of applications, including aerospace, rail transportation, and robotics. Super nuts typically feature a larger number of holes to better accommodate specialized mechanical equipment. 4. Easy Installation and Removal: Super nuts are simple to install and remove using a standard torque wrench, eliminating the need for traditional bolt tightening methods like hammering, saving time and effort. 5. Sturdy and Durable Construction: Super nuts offer a sturdy, durable construction and are lightweight. They can tighten under static, alternating, and impact loads, extending bolt life. 6. Low Maintenance Cost: Super nuts provide a lifetime maintenance-free connection, reducing maintenance costs and time.

Overall, super nuts are more secure and reliable than standard nuts and are suitable for harsher environments. However, they are relatively expensive and cannot replace all standard nuts.

Lock Nuts: The locking clips on the lock nut engage with a keyway in the shaft thread and a slot in the nut, respectively, to lock the lock onto the shaft. The lock nut is securely fastened to the shaft. If intact, the lock nut can be reused. A new locking clip should be used each time the lock nut is reinstalled.

Use a lock nut with a locking clip to lock the bearing. After installing the bearing or component, thread the lock nut onto the shaft. Then, use an impact wrench to tighten the nut onto the bearing or component, aligning a slot in the nut's outer diameter with a keyway in the shaft thread. Be careful not to overtighten. Place a spring washer and locking clip on the connecting bolt. Insert the locking clip into the keyway on the shaft thread and the slot on the nut's outer diameter. Then, thread the connecting bolt and spring washer together into a threaded hole in the side of the lock nut.

Super nuts have a high self-locking performance, meaning they automatically resist loosening and falling out when subjected to external forces. This is due to their thread design and material selection. The relatively large taper angle between the threads of Super nuts creates a sufficient radial force between the nut and the threads, resulting in a strong self-locking effect. The thread design and material selection of Super nuts also reduce the risk of structural fatigue. In traditional nuts, the localized torque transmission can lead to stress concentrations in the material, increasing the risk of fatigue failure. The super nut reduces the degree of stress concentration by increasing the number of contact points, thereby reducing the occurrence of structural fatigue.