Open Source Spindle Cartridge

Design for up to 3" Feed-Through

FreeCAD = File:Spindlecartridge.fcmacro

These are thousands off the shelf, so need to go open source.

• 4.5" 8450 TIMKEN BEARING CONE 4.5in ID [1]. $38 [2]
  • Cup costs just as much - [3]. Or this - [4]
  • Crosses over to SKF, Enduro, NTN, Koyo, etc [5]
• Can get 4" automotive bearings for $80 [6]
• and 3.75" bearings for $20 [7]

BOM

• Use 4.5" schedule 40 pipe - [8]
• Use 4.5" OD schedule 160 pipe - [9]
• 4.5"x3.25" DOM [10] $10/inch

Spindle with Concrete Block

• 3" through feed for indexing lathe mill.
• Here is the macro - File:Spindleassy.fcmacro and the generating chat [11]. Bearing tapers and cups are shown (bearing in 2 parts). Some hallucination on drive, but in general concept is coming together.
• File:Spindlewithconcreteblock.fcstd

AI Links

• Spindle design - [12]
• Using Marlin or BeagleBone with LinuxCNC for controls, and open source servo design - [13]