NF type non-contact type backstop device is an anti-reverse device mounted on a high-speed shaft, which skillfully utilizes the centrifugal force of a special-shaped wedge.The special geometric relationship between the inner and outer rings to achieve its forward operation, the main components are non-contact and wear-free, and the reverse can be often reversed.
Type backstop device. The backstop is widely used in transportation machinery, elevator scraper conveyors and other mechanical equipment with backstop requirements.
It has a large anti-stop effect and high reliability. Long service life, light weight, convenient installation and maintenance, etc., its comprehensive performance is significantly better than other backstops Device.
The NF type backstop produced by our company fully meets the requirements of JB/T9015-1999, and at the same time, for the convenience of users.
Packing, our factory also supplies non-contact backstop with anti-rotation seat, model NFG.
working principle:
Inside the backstop, a plurality of shaped blocks are distributed in the raceways formed by the inner and outer rings. When the inner garden is running in the forward direction, the shaped blocks are swayed together.
Rotating, when the rotation speed is within a certain range, the shaped block is deflected by the centrifugal force, and is out of contact with the inner and outer rings, thereby achieving no grinding.
Loss operation. When the internal action is reversed, the shaped block is brought into contact with the inner and outer gardens under the action of the spring, and the wedge is tightly integrated to bear the press.
The reverse torque transferred from the inner circle. (See the basic form of product selection: non-contact one-way clutch.)
Selection principle:
1. NF Series Te≥Tc
2. The speed of the backstop mounting shaft extension should be less than or equal to the maximum speed of the backstop
3 According to the backstop installation shaft extension selected backstop installation aperture
4. Face the end of the backstop installation shaft to determine the direction code of the backstop, select "S" clockwise, and vice versa
5. The maximum mass is the mass of the smallest aperture in the same specification.
6.If you have special requirements, please contact our company. Our company can design and produce non-standard products according to your company's requirements.
