Side spindle SS series are used to support an end of a jig when multi-side machining is done on a work piece with jigs like hummock-type.
Spindle is pushed forward by the disc spring, which enables the structure to absorb a slight displacement between the table and jig plate in the axial direction.
Spindle only, clamping mechanism is not built-in.
Due to grease lubrication, oil replenishment is not necessary.