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Mini CNC router, complete plans and instructions

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Step 5: Mechanical components - shafts, bearings and leadscrews

1)      Precision steel shafts:

-          Ø20mm precision steel shafts for X axis (cut from 1 piece of 60 inch=1524mm shaft)

·          2 pieces of 600mm long

-          Ø16mm precision steel shafts for Y axis (cut from 2 pieces of 30 inch=762mm shaft)

·         2 pieces of 390mm long 

-          Ø16mm precision steel shafts for Z axis (cut from 2 pieces of 372mm shaft left from the Y axis shafts)

·         2 pieces of 300mm long

-          machining the precision steel shafts

·         6 pieces                                  

2)      Ball bearings/bushings

-          Ø20mm (Ø32 outer diameter) ball bearings/bushings

·         4 pieces

-          Ø16mm (Ø26 outer diameter) ball bearings/bushings

·         8 pieces

3)      Trapezoidal lead screws cut from a 1500mm long trapezoidal lead screw:

-          Ø16mm  trapezoidal lead screw with 4mm pitch for X axis

·         1 piece of 657mm long

-          Ø16mm  trapezoidal lead screw with 4mm pitch for X axis

·         1 piece of 447mm long

-          Ø16mm  trapezoidal lead screw with 4mm pitch for X axis

·         1 piece of 357mm long

-          end machining for the trapezoidal lead screws in a local workshop

·         3 pieces          

 

4)      Trapezoidal cylindrical Nuts that I made on a lathe in a local workshop:

-          Ø16mm with 4mm pitch nut

·         1 piece with Ø32mm outer diameter and 32mm long

-          Ø16mm with 4mm pitch nut

·         2 pieces with Ø24mm outer diameter and 24mm long

 
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