The present invention relates to a timepiece train (100) comprising a shaft (1) having a recess (6) for receiving a plate (2) and comprising, on either side of said recess (6), an axial abutment bearing surface (7) maintaining said plate (2) in abutment, said plate comprising a radially resilient arm (4) and a second arm (5) which together form a clamp (3) clamping a radial bearing surface (9) of said shaft (1) in the vicinity of said axial abutment bearing surface (7). Said train comprises a lead-in slope (8) arranged such as to radially repel said first resilient arm (4) and said second resilient arm (5), to enable said plate (2) to be inserted onto said shaft (1). The invention further relates to a timepiece movement (200) comprising such a train (100).