- 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:
- POM (polyoxymethylene) is the same as Acetal - [1]. $30 on Aliexpress - [2]
- POM printed bearings on Ultimaker - [3]
- Download - [4]
RJMP 8 mm vs RJ4JP
Hint: Make sure you have the correct version - ODs are different
- RJMP has 16 mm OD - [5]
- RJ4JP - has 15 mm OD - [6]