The GE40-XL-KLL-B insert ball bearing has a spherical outer ring that seats in a housing with a matching spherical bore, while the inner ring is secured to the shaft by an eccentric locking collar. Bore diameter is 40.0 mm, outside diameter 80.0 mm, width 42.9 mm, and net mass is 0.75 kg. Sealing is designated KLL, with seals fitted on both sides of the bearing. The eccentric locking collar clamps the inner ring directly onto the shaft, giving a firm radial connection without additional fasteners once tightened. The spherical outer ring surface allows the bearing to accommodate a degree of misalignment between the shaft and the housing bore. The KLL seals on both faces retain the internal lubricant charge and restrict the ingress of dirt and moisture, which supports continuous running once the bearing has been greased.