Sankyo's RS RollerDrive unit
is the industries fastest. It can index 90 degrees in
0.4 seconds with maximum output loading. Indexing and
repetitive accuracies are held in both directions due
to zero backlash between preloaded cam followers and
multiple cam ribs. Enhanced life and rigidity is inherent
with this design without clamping. A high torque servo
drive enables short settling times with the efficiency
of low inertia internal components. A large mounting
flange and hollow bore offers versatile chuck or fixture
mounting. Positioning options are endless with the addition
of a second axis with our dual rotary DTS series. These
units are perfect for machining compound contours or
when fast positioning is required.
||While the linear system uses ball screws, Sankyo uses a roller gear for rotary systems to successfully get performance equivalent to a linear system. As with ball screws, the roller gear cam mechanism, consisting of this roller gear and a globoidal cam, can provide a preload design without backlash. The rolling contact surfaces make it highly rigid and efficient. Of course, no clamping device is necessary.