HepcoMotion makes parallel motion easier with new floating bearing
26 May 2010
Two linear slides or track systems operating in parallel with one free to move; this may be a text book approach to accommodating parallelism tolerances, but to build such a mechanism, the designer is often hampered by limited component choice and even the need to specify special parts to complete the system.
Now thanks to the development of a new floating bearing with Vee-profile by HepcoMotion, this function can be achieved in tandem with the entire HepcoMotion GV3 and PRT precision ring track ranges. HepcoMotion Vee slides, ring and tracks are available in a wide range of formats and sizes and with the ready availability of standard carriage plates, lubricators and other parts.
So, for the majority of parallel systems an off-the-shelf solution is now available and one that is not subject to ‘special’ prices and long lead times.
In providing axial movement (float) to compensate for parallelism between the opposing Vee’s, HepcoMotion's floating bearings reduce the potential of additional loading and help to maintain a consistent running quality. They are available in three basic sizes to work in harmony with the GV3 and PRT ranges.
They may be specified in two stud lengths covering most thicknesses of carriage or mounting plate, the short stud version being compatible with HepcoMotion carriage plates. Both versions are available in three different types.
The concentric type is fixed, providing a datum for the system and the eccentric and double eccentric types enable system adjustment. The latter has sufficient stroke to permit disengagement of a ring encircled by bearings. To allow for high speed and lifetime lubrication all versions feature caged needle roller bearings. And to protect them against the ingress of debris they have nitrile seals.
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