Installation and Operating Instruction
for Irreversible Locks IR
3. Function of the Irreversible Locks
Thus, if force is applied tot he driving part, depending upon the direction in which it is applied one
or other oft he actuating pegs (3) presses one of the two locking rollers (5) out of engagement in
opposition to the force exerted by the engaging spring (6). In this way, the driven part connected
to the centre body (1) can be rotated without difficulty. When this is done the roller which is still
engaged operates as in a freewheel mechanism turning in the freewheeling direction. Due tot he
symmetrical layout of the irreversible Locks, the process which has just been described can also
take place in the same way in the opposite direction of rotation.
If, however, forces coming from the machine attempt to rotate the centre body (1) via the shaft,
the centre body is locked to the fixed housing (2) by the locking rollers. Each roller performs this
function for one direction of rotation. Thus, the irreversible Locks are not suitable for use where
the driven side tends. The Irreversible Locks prevents unwanted adjustments.
Caution!
The Irreversible Locks are not suitable for use where the driven side tends to run
ahead for the driving side during operation (e.g. for the operation of brakes during
descending movements in lifts and hoists).
4. Types
Irreversible Locks IR are available in the standard type.
Standard type
This type is designed for universal use.
It is identified by the suffix „R“ at the end of the product designation.
Example: IR 24 R
Please note!
Further information especially on design, function and selection, permissible torques
or permissible speeds of these Irreversible Locks is provided in RINGSPANN
Catalog 84 “Freewheels”. Please contact RINGSPANN GmbH if you need
assistance.
