DRY VACUUM PUMP, AND ASSOCIATED ASSEMBLY METHOD

摘要

The invention relates to a dry vacuum pump comprising two rotors (6, 7) capable of rotating in a synchronized manner in opposing directions and without contact so as to feed a gas to be pumped from an intake (4) towards a delivery side of said pump (1), said pump (1) comprising a gear pair comprising two timing gears (20) each having a toothed wheel (22) mounted on a respective shaft (8, 9) of said rotors (6, 7) to synchronise the rotation of said rotors (6, 7), characterised in that at least one timing gear (20) is provided with a clamp (24) rigidly connected to said toothed wheel (22) of said gear (20) in order to clamp said gear (20) to said shaft (8, 9). The invention also relates to a method for assembling a pair of timing gears (20) in a dry vacuum pump (1) in the previously described manner.