Tradition * Innovation * Fortschritt

Slip Hubs

ATLANTA slip hubs serve as overload protection and as safety devices of machinery driven by sprocket wheels, gears or pulleys.


Overview ATLANTA slip hubs program:

  • Light-duty and heavy-duty series
  • Size: bore d1 19 up to 120mm
  • Maximum torque: 10 up to 6800 Nm
  • Maximum speed 650 up to 8500 min–¹
  • Plate springs single, double or triple contact pressure
  • Replacement friction linings for dry or oil-type operation
  • Replacement plate springs and bush
  • Hubless sprocket wheels, pitch 8x3 to 25,4x17,02 mm

 

Functional description of slip hubs

The driving element (sprocket wheel etc.) is slid onto the bush and clamped between the friction linings by means of the thrust disc, the disc springs and the adjusting nutprovided with a safety washer.The more the spring discs are compressed by the adjusting nut, the higher is the torque at which the driving elements will slip thus limiting the torque.


Rough and ready formula for the selection of slip hubs:

  • Much friction work and small torque
    Disc springs, single-layer arrangement (single contact pressure) = status on delivery
  • Medium friction work and higher torque
    Disc springs, double-layer arrangement (double contact pressure)
  • Little friction work and very high torque
    Disc springs, triple-layer arrangement (triple contact pressure)

 

The slip hub is completely closed. No disc springs are visible from the outside, and no contamination of interior parts is possible. Inside the slip hub the driving elements run on a wear-resistant bush preventing the coupling unit from being damaged even in the case of prolonged slipping. The standard friction linings are designed for dry operation. No harm will come, however, from their occasionally being moistened with oil or grease. The coefficient of friction and hence the safety factor are not influenced by this, as the friction surfaces are not moistened. Care must be taken, however, not to allow the lining to be soaked with oil.

For continuous oil-bath operation of the slip hub, the bronze friction linings which are especially suitable for oil-type operation are to be employed. In this case the table values (see pdf catalogue page J-2) must to be reduced by ¼ to allow for the different coefficients of friction.