Clamping heads of the SPM-HV series are used for pallet clamping on single or double axis indexing tables. With the clamping heads and attendant tapered rings, maximum repeat precision of the clamping position is achieved. Due to the mechanical clamping principle with integrated force intensification and locking feature, only one unclamping line without permanent pressure is necessary. Therefore, the clamping head is particularly suited for applications under very tight spatial conditions and for highly dynamic tables. The self-locking gearing ensures that the pallet is protected against falling, as the retaining forces are much higher than the clamping forces.