Customizable Deep-Groove Bearing - Untested Display Geometry

Geometry/display model only, NOT a working or manufacturing-ready bearing. The crown cage has no verified axial retention: its nominal mouth is 9.158 mm for a 9 mm ball, with no retaining throat, lip, second half or joint. Retention and the eccentric ball-loading sequence are unverified. No physical assembly, rolling, load, wear, lubrication, print-fit or print-in-place test has been performed.

Customizable original geometry study: inner ring, outer ring, eight balls and a gold-colored pocketed crown cage. Default bore 16 mm, outer diameter 48 mm, overall width 12 mm. Balls are 9 mm on a 32 mm pitch diameter. The cage has 1.1 mm radial space on each side. This assembled pose does not demonstrate a retained metal cage.

Files: first STL is the full reference assembly, NOT a print-in-place file. Eleven component STLs are included in assembled coordinates; separate and orient them before any experimental slice. Native Playground STL exporter used, no external geometry conversion, repair or union. Closed tessellated surfaces, not analytic B-rep solids. Exported assembly bounds checked at 48 x 12 x 48 mm. Closed meshes and static clearance checks do not prove physical function or printability. The grouped interference checker pairs the parent with its own children; those results are not valid collision proof.

No validated material, orientation, supports, tolerances or print settings are supplied. The cage needs a verified retention/installation design before physical use. Do not use for machinery, loads, safety-critical applications or as a catalog bearing replacement. Test prints and documented Makes are welcome as geometry experiments, not proof of a working bearing.

Customize in TrueGeometry Playground: open the saved model below or paste the attached bearing_recipe.txt into Script on a fresh page and click Clean & Run. Change BORE_D or OUTER_D using Live Parameters, enable Auto-Run / Auto-Update 3D or click Rebuild. Reload before a full rerun. Keep positive dimensions and OUTER_D > BORE_D. Width, ball size, groove, shoulders, cage and pitch derive from the primary inputs. Ball count stays eight; no safe slider range is enforced. Recheck every change. Only default geometry/export checks are claimed.

The attached illustrated guide PDF and gallery images show Script, Clean & Run and the actual customization controls. Cover and axial image are renders of the unchanged exported GLB, not photographs; lighting differs from Playground.

Blog and full commands: https://blog.truegeometry.com/0_0_0_0/blogs/post-23a6e3d0.html Saved editable Playground: https://pro.truegeometry.com/CoreWebGLTG/KBEAgentHTTP.html?cadcommand=cmd_21cc346d-fb2.txt

AI-assisted original design and writing. CC BY-NC 4.0, educational display use; commercial use requires TrueGeometry consent.

Full native recipe (millimeters): $BORE_D = 16 $OUTER_D = 48 $WIDTH = ($OUTER_D-$BORE_D)*0.375 $BALL_D = ($OUTER_D-$BORE_D)*0.28125 $GROOVE_CLEAR = $BALL_D/60 $SHOULDER_DEPTH = $BALL_D*8/45 $CAGE_CLEAR = $BALL_D/30 $CAGE_RADIAL = $BALL_D*0.4 $CAGE_WIDTH = $BALL_D*0.76 $CAGE_Y = -$BALL_D*0.22 $PITCH_R = ($BORE_D+$OUTER_D)/4 $BALL_R = $BALL_D/2 $GROOVE_R = $BALL_R+$GROOVE_CLEAR $INNER_FACE_R = $PITCH_R-$BALL_R+$SHOULDER_DEPTH $OUTER_FACE_R = $PITCH_R+$BALL_R-$SHOULDER_DEPTH $INNER_T = $INNER_FACE_R-$BORE_D/2 $OUTER_T = $OUTER_D/2-$OUTER_FACE_R $CAGE_IN = $PITCH_R-$CAGE_RADIAL/2 $POCKET_R = $BALL_R+$CAGE_CLEAR // Custom design, mm numerical units. Native tessellated closed-volume model, not analytic B-rep. /parametric bend ($BORE_D/2) $INNER_T $WIDTH 360 /tag_last InnerBlank /parametric torus $PITCH_R $GROOVE_R /tag_last InnerGrooveTool /rotate @InnerGrooveTool 90 0 0 /subtract @InnerBlank @InnerGrooveTool /tag_last InnerRing /setprop @InnerRing color #b8c2ce /parametric bend $OUTER_FACE_R $OUTER_T $WIDTH 360 /tag_last OuterBlank /parametric torus $PITCH_R $GROOVE_R /tag_last OuterGrooveTool /rotate @OuterGrooveTool 90 0 0 /subtract @OuterBlank @OuterGrooveTool /tag_last OuterRing /setprop @OuterRing color #aab6c5 /parametric bend $CAGE_IN $CAGE_RADIAL $CAGE_WIDTH 360 /tag_last CageBlank /move @CageBlank 0 $CAGE_Y 0 /parametric sphere $POCKET_R /tag_last Pocket /move @Pocket $PITCH_R 0 0 /pattern @Pocket circ 8 360 y /subtract @CageBlank @Pocket @Pocket_c1 @Pocket_c2 @Pocket_c3 @Pocket_c4 @Pocket_c5 @Pocket_c6 @Pocket_c7 /tag_last Cage /setprop @Cage color #bda16b /parametric sphere $BALL_R /tag_last Ball /move @Ball $PITCH_R 0 0 /setprop @Ball color #dce5ed /pattern @Ball circ 8 360 y /group_visible BearingAssembly

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