Bearings/Spacers

thingiverse

Scaling down a turbine engine model to 70% of its original size requires a substitution of bearings that match the reduced dimensions. The scaled-down model incorporates smaller bearings to maintain structural integrity and functionality. A large bearing substitutes the original with an inner diameter of 14 mm, an outer diameter of 31 mm, and a height of 9 mm. In contrast, a small bearing replaces the original with an inner diameter of 12 mm, an outer diameter of 23 mm, and a height of 6 mm. For those interested in 3D printing a jet engine model, a suitable reference can be found at https://www.thingiverse.com/thing:1327093.