Ball Bearing Script

Explained fully at https://linuxforanengineer.blogspot.com/2013/08/free-cad-bearing-script.html:

import Part import math

1. VALUES#

R1=15.0 R2=25.0 R3=30.0 R4=40.0 TH=15.0 NBall=10 RBall=5.0

1. Program#

B1=Part.makeCylinder(R1,TH) B2=Part.makeCylinder(R2,TH) IR=B2.cut(B1)

B3=Part.makeCylinder(R3,TH) B4=Part.makeCylinder(R4,TH) OR=B4.cut(B3)

Part.show(IR) Part.show(OR)

CBall=((R3-R2)/2)+R2 PBall=TH/2

for i in range(NBall):

 Ball=Part.makeSphere(RBall) 
 Alpha=(i*2*math.pi)/NBall  
 BV=(CBall*math.cos(Alpha),CBall*math.sin(Alpha),TH/2)
 Ball.translate(BV)
 Part.show(Ball)