Method for producing a pre-assembled subassembly

Method for producing a preassembled subassembly for installation in a motor, comprising a balancing shaft with at least one bearing and a needle roller and cage assembly rolling on the bearing,

• wherein the balancing shaft comprises at least one unbalanced weight portion and at least one bearing, wherein the at least one unbalanced weight portion is associated with the bearing and the bearing has a radial running surface which extends only partially over a periphery of the bearing and the radial running surface is limited by free end regions of the bearing,
• wherein a centrifugal force resulting upon rotation of the balancing shaft is situated within a region of the bearing which is formed by the running surface extending partially over the periphery of the bearing,
• the bearing having a depression when viewed in cross-section with respect to the longitudinal direction of the balancing shaft,
• wherein,
• a slotted needle roller and cage assembly, which comprises a needle cage with a lock, is opened and the needle cage of the needle roller and cage assembly is provided for mounting on the bearing of the balancing shaft,
• the needle cage with the opened lock is moved in the radial direction towards the bearing and is placed on the bearing in the radial direction,
• the needle roller and cage assembly is applied so as to embrace the bearing after it has been fitted, and
• the lock of the needle roller and cage assembly is closed after engaging around the bearing.