1504114 Bushing for eccentric shaft guide on spindle drum indexing fork Gildemeister DMG Mori AS20, GS20, GM20, GM20AC is a precision technical component of the spindle drum rotation and indexing system on Gildemeister DMG Mori AS20, GS20, GM20, GM20AC multi-spindle lathes. The guide bushing is installed in the fork 1504102 and guides the eccentric shaft 1504105 during rotation, maintaining assembly alignment and the correct entry position into the Geneva cross 1504101. Within the drive kinematics, this item should not be considered a generic mechanical spare part, but a functional element of the synchronism between camshaft 3104114, fork 1504102, eccentric shaft 1504105, wheel for eccentric shaft 1504104, wheel 1504103, Geneva cross 1504101, roller 1504106 and bushing 1504114. internal wear, ovalisation, scoring or excessive clearance can force the eccentric shaft to work off-axis, causing timing loss, vibration, accelerated wear of roller 1504106 and indexing defects. The timing and synchronism of drum rotation, positioning and stop movements depend on the correct condition of this kinematic assembly. Periodic inspection should verify clearance, impact marks, sliding, rolling, centering, lubrication and the consistency of the coupling between fork 1504102, eccentric shaft 1504105, wheel 1504104, wheel 1504103, Geneva cross 1504101, roller 1504106 and bushing 1504114. During extraordinary maintenance it is advisable to assess coordinated replacement of the wear components, including bearing, eccentric shaft, bushing and roller, because partial repair can leave residual clearance and compromise final accuracy. The operation requires technical personnel with advanced knowledge of the multi-spindle lathe and indexing kinematics, as incorrect assembly can generate impacts, phase loss, non-repeatable positioning, overload of connected mechanisms and reduced machine reliability. Tadaah offers this spare part for maintenance technicians, quality control departments, machine tool builders and users working in turned metal small parts, automotive and precision engineering. Correct identification of the code and kinematic function helps optimize spare part selection, reduce purchasing mistakes and support targeted repairs on Gildemeister DMG Mori AS20, GS20, GM20 and GM20AC machines.