Shimano Hollowtech Bearing Extraction Cup
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3D-printable receiver cup for pressing bearings out of Shimano Hollowtech-style 24mm bottom bracket cups.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Public Domain
A 3D-printable receiver cup for extracting bearings from Shimano Hollowtech-style bottom bracket cups.
This is not a bottom bracket removal tool. It is designed to sit over the cup and provide clearance for the bearing to be pressed or pulled out. The model has a cylindrical 44 mm cup locating seat, an enlarged internal bearing clearance chamber, and a 11 mm pass-through hole with tolerance for a spindle, drift, bolt, or puller setup.
Recommended workflow: print the included short fit-test first to confirm the cup seat and 11 mm pass-through fit your printer and bottom bracket. If the fit is tight, increase the clearances in the OpenSCAD file.
Specs
Cup locating seat: 44.45 mm ID
Bearing clearance chamber: 39.5 mm ID
Pass-through hole: 11.0 mm ID
Outer diameter: 60 mm
Height: 34 mm
Parametric OpenSCAD source included