The search for the elusive X-axis idler rod

Preamble

I bought a P3Steel v4 printer. The X-axis carriage with also laser cut steel parts. The X-axis idler rod which acts as an axel to the 608zz bearing was missing. This is my search to find it.

The part in question

These images show the part:

The width of the idler is shown here:

Width of the X-axis idler
Width of the X-axis idler

The thinner line, at the top of the photo, is the actual width as the end plate protrudes one of the side plates, by about 1 mm or 2 mm.

The image below shows a clearer image of the distance, b, between the outer opposing faces of the two plates:

The distance between the two opposing outer faces
The distance between the two opposing outer faces

Question posted on StackExchange

See Is the 8mm x 20mm bearing axle for the X-axis idler (of a P3Steel) a custom part?

Options available

There are the following options:

  • Use a bolt
  • Contact the Spanish designers to see if they can supply one – my supplier can not, they used a bolt
  • Make a rod

The diagram

8mm_smoothrod_x-idler

Dimensions:

  • Space between circlip and outer plate of plate, a
  • Distance between outer faces of plates, b
  • Diameter, D
  • Width of circlip groove, w
  • Distance between circlips, x
  • Overall length of rod, y
  • Distance from circlip to rod end, z

where,

  • a = 0 – 0.3, or 0.5 mm
  • b = 16 mm??? or 20 mm????
  • D = 8 mm
  • w = 0.3 – 0.5 mm
  • x = 16 – 18 mm
  • y = 20 – 24 mm
  • z = 1.5 mm

Note that,

  • x = b + 2a
  • y = x + 2w + 2z
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