Linear Guides for 3D Printers — MGN Miniature Series
A 3D printer moves fast with almost no load, so the guide is judged on friction, weight and repeatability. MGN miniature guides are the usual choice for X and Y gantries and for beds on larger machines. Preload matters more than load rating here.
What goes wrong on this axis
- Friction and preload that show up as ringing on the print surface
- Weight on the gantry, which limits acceleration
- Rail lengths that do not match printer kits
Recommended series
MGN miniature guide
7, 9, 12 and 15 mm; C standard and H extended blocks on the same rail.
Q1 self-lubricating guide
For printers that run continuously without a grease schedule.
Models we quote most for this application
FAQ
| Which preload for a printer gantry? | ZF (clearance) runs lightest and is common on belt-driven printers. Z0 (zero clearance) is the usual choice when the gantry is driven by a screw and needs to hold position. |
| MGN12 or MGN15 for a CoreXY gantry? | MGN12 is enough for most desktop gantries and saves weight. MGN15 is chosen on larger machines where the gantry span is long enough that stiffness matters more than mass. |
| Can I buy blocks and rails separately? | Yes. MGN blocks and MGN R rails are stocked as separate items so you can replace one without the other. |
Request a quote for this application
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