bearings

thingiverse

Two-part bearings - one inner ring and one outer ring, internally with V-shaped grooves between the rings and a small gap(0.3mm) between the groove faces. One 5mm ID x 11mm OD x 5mm H One 7mm ID x 14mm OD x 7mm H One 10mm ID x 22mm OD x 16mm H Some effort may be required to loosen the parts. - may try using a nail puncher to knock on the bearing face - may try using tighten two nuts on the bearing faces and turning it loose.