Piaggio Ciao / Bravo / CBA / Si bearings

The 3D Printed bearings are components designed to facilitate the test assembly of Piaggio Ciao (and similar models) engine casings without using the original steel bearings.
Their main purpose is to allow all preliminary assembly checks — such as crankshaft centering, gear inspection, clearance, and fit verification — to be performed quickly and without risking damage to the real components.

These bearings have the same external dimensions as the original bearings, but they are made of plastic material and lack internal balls. Thanks to this, the crankshaft can be easily inserted and removed, without the need to heat the casings or use pullers.

Operation is simple:

• The dummy bearings are inserted into their respective casing seats, as if they were the real ones.
• The casing can be closed and reopened multiple times to check alignments, perform measurements, or test different components.
• The crankshaft remains in place but with a soft fit, allowing it to be rotated and removed without force.
• Once the dummy assembly is complete, the dummy bearings are removed, and the definitive installation of the original bearings proceeds.

These components are particularly useful for those performing preparations, checking tolerances, or assembling multiple engines, as they reduce working time and preserve the integrity of the real bearings.