Frânele cu fricțiune sunt construite cu suprafețe de frecare (ferodouri) staționare și o suprafață de uzură care se rotește. Cele mai obișnuite sunt cele cu disc și saboți, cele cu tambur și cele montate pe ax cu disc și rotor. Frânele cu fricțiune asigură decelerație controlată, oprire, blocare și control în aplicații de tensionare. Sunt acționate penumatic iar revenirea se face cu arcuri.

 

 

frana NEXEN S600   

Frâne cu fixare pe ax

Air or spring engaged, shaft mounted friction brakes come with tapered bores to accept QD bushings or straight, bored and keyed to size disc-hubs. Bushings are available to reduce the size of the standard, straight bore models. Air engaged brakes are used for stopping, holding, controlled deceleration and tension control. Spring engaged brakes are excellent stopping and holding devices. Six sizes provide torque up to 10,000 in-lbs.

 
     
 frana NEXEN cu disc si saboti  

Frâne cu saboți și disc

Seven caliper brake designs include air actuated/spring released, spring engaged/air released and spring engaged/hydraulic released models. Several disc diameters up to 24-inches are offered to provide torque up to 50,000 in-lbs. Multiple calipers are used on a single disc to increase torque. These brakes can accommodate a variety of disc thicknesses. Caliper brakes are used in controlled deceleration, cyclic stopping, holding, emergency stops and tension control applications.

     
 frana NEXEN cu tambur  

Frâne cu tambur

Seven air engaged models fit four brake drum diameters. Drum brakes are actuated with a diaphragm sealed actuator that forces a brake shoe on a drum surface to provide the braking torque. Brake drums are bored and keyed to fit standard shafts. The brake shoes are clamped on the outside of the drum to provide brake torque up to 3750 in-lbs. Hinge top models offer a convenient feature to change rolls when the brake is used in tension control applications.