NJZ (DSN) low speed contact-type backstopInternal use of wedges for backstop, large bearing capacity. The product is installed at the low-speed end of the system to realize the material terminal backstop and ensure system safety to the greatest extent. This series of backstop includes 17 specifications, and the backstop torque covers 25～3000KN.m

NJ low speed contact-type backstopIt is the earliest medium and large backstop in China. The inside of the backstop uses a wedge for backstop, and the product has a large carrying capacity. Installed at the low-speed end of the system to realize material terminal backstop and ensure system safety to the greatest extent. This series of backstops includes 13 specifications, and the backstop torque covers 8～700KN.m.

NF high speed non-contact-type backstop adopts wedges for backstop internally, which has a large bearing capacity. The product is installed at the high-speed end of the system. When the backstop reaches a certain speed, the wedge is separated from the inner and outer ring surfaces under the action of centrifugal force to realize non-contact operation. This series of backstops includes 11 specifications, and the backstop torque covers 1～25KN.m.