Locking assemblies
Photo and diagram
450 serie
The locking together of two components is achieved by tightening one conical ring against another. The outer ring will have the tendency to enlarge, and start to press against the housing wall, whilst the inner will start to force itself against the shaft.
Carefully clean the elements involved, and apply a light film of oil to the surfaces which will be in contact. Fit the assembly into the space in the hub, then insert the shaft through the centre. Gradually tighten the screws and uniformly increase the torque until the Torque level Ta, shown in the tables, is achieved. The figures for T and Fax in these tables are calculated assuming the assembly is done in this way ? using oil.
Never use Molybdenum disulphide (MoS2) based oils or greases, they will cause considerable reductions in the friction torque.
Remove the screws and re-insert them in the extraction holes, increasing the torque gradually once more until the cones separate. In case of re-use after removal, re-oil the screws and threads once more.
Tolerance : Surface quality
A reasonably good machine tool finish is sufficient..
Minimum surface quality of Rt max 16Ám
Maximum admissible tolerances : Shaft h8, bore H8
100 serie

250 serie
Mounting in series
  • It is possible to mount the locking kits (RTT and RTL) in series.
  • The increase in torque which will be obtained is as follows :

    1 Locking kit, TNm = Catalogue value
    2 Locking kit, TNm = Catalogue value
    3 Locking kit, TNm = Catalogue value
    4 Locking kit, TNm = Catalogue value
    x 1,00
    x 1,90
    x 2,70
    x 3,60
  • If several locking assemblies are mounted in series, pay attention to the external diameter of the hub.