Rotating Bowling Ball Cup (Integrated Bearings)
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This is a rotating bowling ball cup designed to use 6mm airsoft BB's as the rolling elements in the integrated bearings.
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- Printables
- Kategoria
- Indoor Sports
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
This is a rotating bowling ball cup (bowling ball spinner) designed to use 6mm airsoft BB's as the rolling elements in it's integrated bearings. A 19 ball thrust bearing is designed into the top to handle the normal force applied by the bowling ball and a deep groove radial bearing is designed into the bottom to lock the assembly together and constrain the assembled parts to rotate about their central axis.
Notes:
-I'd like to give credit to Positive Altitude on Youtube (https://www.youtube.com/@Positive_Altitude) for inspiration in designing the integrated bearings. These 2 videos were particularly helpful:
-https://www.youtube.com/watch?v=0KhV6JW2sHg
-https://www.youtube.com/watch?v=NIIVZcgJWPs
-All printed parts were printed in PLA+ with no supports an 15% infill.
-I designed parts to be able to be printed with no supports however there is a flat bridged area on the outer shell that may benefit from support if you are having trouble maintaining a smooth surface across the bridge.
Components:
-1 Inner Base
-1 Thrust Cage
-1 Deep Groove Cage
-1 Outer Shell (If using "OUTER SHELL(MOTIV).stl" also print "MOTIV LOGO.stl")
-26 6mm Airsoft BB's
Assembly:
Print all Components (Outer Shell can be swapped for "OUTER SHELL (MOTIV)" located in "MOTIV SHELL.zip").
Snap 19 BB's into Cage for the thrust Bearing ("Thrust Cage.stl") as shown in photo 2.
Place assembles Thrust cage onto base as shown in photo 4.
Place Outer Shell (or "Outer Shell(MOTIV)" on top of assembly and invert such that the base of the assembly is facing upwards.
Rotate base to align notches in the base and outer shell.
Place 7 BB's into the race of the integrated deep groove and space equally around it's circumference as shown in photo 5.
Snap the Deep groove cage onto the BB's as shown in Photo 6 (one BB should snap into each clip of the cage if aligned correctly).
Invert the assembly so that that the flat base is at the bottom.
(If using the Shell with the logo, press fit the pieces into the shell).
Commercial License Available This model is for personal use only. If you want to sell physical prints, you can purchase a Commercial License. Contact me at: your email / Etsy shop / Gumroad link / PayPal link.