Linear Bearings

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  • LM12 = 12mm bearings
  • LM25 = 25mm bearings
  • LMB8 = 1/2" bearings
  • LMB16 = 1" bearings

Manufacturing

RJ4Jp - iglidur by Igus - here is what it's made of:

Iglidur.jpg

  • POM ( polyoxymethylene ) is the same as Acetal - [1]. $30 on Aliexpress - [2]
  • POM printed bearings on Ultimaker - [3]
  • Download - [4]. 3 grams each, so $30 roll of filament means 10 cents per bearing. It would be worth to print these effectively to reduce costs of building 3D printers.
  • PA66 is nylon 66. [5]

RJMP 8 mm vs RJ4JP

HintLightbulb.png Hint: Make sure you have the correct version - ODs are different

  • RJMP has 16 mm OD - [6]. OSE carriages are 17 mm diameter, so this can fit with heat gun.
  • RJ4JP - has 15 mm OD - [7]. 8x15x24.