Arm for turbine-engine casing comprising a removable additional piece

An arm for a casing of a turbine engine, having a first longitudinal end provided with first fixing means configured to be fixed to an external casing collar, and a second longitudinal end provided with second fixing means configured to be fixed to a casing hub, the arm comprising a shaft housing emerging at the first longitudinal end of the arm in order to house a secondary turbine-engine transmission shaft, wherein:

• the arm comprises a body formed by a base and an upright,
• the base includes the first fixing means and has a first portion arranged on the same side as a first lateral end of the arm, and a second portion arranged on the same side as a second lateral end of the arm opposite to the first lateral end and including a first section of the shaft housing,
• the upright has a first longitudinal end connected to the first portion of the base, and a second longitudinal end opposite to the first longitudinal end and including a part of the second fixing means,
• the arm comprises an additional piece fixed removably to the body,
• the additional piece includes a second section of the shaft housing and delimits a bearing housing emerging in the shaft housing and intended to house a bearing,
• the arm comprises a spacer interposed between the base and the additional piece,
• the spacer includes a third section of the shaft housing, and
• the upright and the additional piece are mutually in contact by means of contact surfaces conformed so as to allow movement of the additional piece towards the base when the arm is devoid of the spacer.