Adjustable linear bearings
Plain bearing specialist igus has developed a new DryLin W linear guide with a 'turn to fit' function for manual setting of the clearance.
Igus says that the system has been designed to have adjustable clearance, it is lubrication free and resistant to contamination.
Users can decide when using an Allen key whether the standard clearance is required or if the unit is to be pre-tensioned to be free from clearance. The tolerance of the system can be adjusted over the whole bearing surface by turning a knurled adjustment screw integrated into the side. Adjustment is in small notched steps and once the bearing fits the shaft, it can then be moved linearly. If wear occurs, the system can be readjusted.
The system is made up of a housing consisting of several parts and a gliding film made of technical tribo-plastic. The clearance adjustment can also be transferred to the leadscrew linear units and belt drives.
According to igus, the 'turn to fit' design allows flexible, modular construction and allows for easy assembly.
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