Xem Studiomeasured geometryMGN9 / MGN12 / MGN15 miniature linear rails and carriages
What are MGN12H carriage dimensions and mounting holes? · Hardware · basis: HIWIN MGN series catalogue dimensions (rail profile, hole pitch, carriage envelope and mounting pattern); other brands match
- sizes
- 8 in table
Notes
- Rail: MGN9 9 × 6.5 mm with 20 mm hole pitch; MGN12 12 × 8 mm, 25 mm pitch; MGN15 15 × 10 mm, 40 mm pitch. Holes Ø3.5 with Ø6 counterbore for M3.
- Carriage (H = long, C = short): MGN12H 45.4 × 27 × 13 mm assembled height, M3 holes on 20 × 20; MGN12C 34.7 long, holes 20 × 15. MGN9H 38.4 × 20 × 10, holes 15 × 20.
- Mount rails to a flat reference; printed mounts need the counterbores modeled (Ø6.2 × 4.5) so the M3 heads sit below the rail top.
Sizes
| part | length_mm | width_mm | height_mm | holes | pitch_or_pattern_mm |
|---|---|---|---|---|---|
| MGN9 rail | 150–400 | 9 | 6.5 | Ø3.5 cbore Ø6 | 20 |
| MGN12 rail | 150–400 | 12 | 8 | Ø3.5 cbore Ø6 | 25 |
| MGN15 rail | 150–400 | 15 | 10 | Ø3.5 cbore Ø6 | 40 |
| MGN9C | 28.9 | 20 | 10 | 4 × M3 | 15 × 10 |
| MGN9H | 38.4 | 20 | 10 | 4 × M3 | 15 × 20 |
| MGN12C | 34.7 | 27 | 13 | 4 × M3 | 20 × 15 |
| MGN12H | 45.4 | 27 | 13 | 4 × M3 | 20 × 20 |
| MGN15H | 58.8 | 32 | 16 | 4 × M3 | 25 × 20 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| HIWIN | MGN series linear guideway catalogue | PDF, STEP | HIWIN site terms verify |
| Wikipedia | Linear-motion bearing | web | CC BY-SA 4.0 (text) |
Free files
★ Free files 17 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| mgn9-rail-150 | MGN9 rail 150 mm, 20 mm hole pitch | STEP · STL |
| mgn9-rail-200 | MGN9 rail 200 mm, 20 mm hole pitch | STEP · STL |
| mgn9-rail-300 | MGN9 rail 300 mm, 20 mm hole pitch | STEP · STL |
| mgn9-rail-400 | MGN9 rail 400 mm, 20 mm hole pitch | STEP · STL |
| mgn12-rail-150 | MGN12 rail 150 mm, 25 mm hole pitch | STEP · STL |
| mgn12-rail-200 | MGN12 rail 200 mm, 25 mm hole pitch | STEP · STL |
| mgn12-rail-300 | MGN12 rail 300 mm, 25 mm hole pitch | STEP · STL |
| mgn12-rail-400 | MGN12 rail 400 mm, 25 mm hole pitch | STEP · STL |
| mgn15-rail-150 | MGN15 rail 150 mm, 40 mm hole pitch | STEP · STL |
| mgn15-rail-200 | MGN15 rail 200 mm, 40 mm hole pitch | STEP · STL |
| mgn15-rail-300 | MGN15 rail 300 mm, 40 mm hole pitch | STEP · STL |
| mgn15-rail-400 | MGN15 rail 400 mm, 40 mm hole pitch | STEP · STL |
| mgn9h-carriage | MGN9H carriage envelope, 15 × 20 mm M3 pattern | STEP · STL |
| mgn9c-carriage | MGN9C carriage envelope, 15 × 10 mm M3 pattern | STEP · STL |
| mgn12h-carriage | MGN12H carriage envelope, 20 × 20 mm M3 pattern | STEP · STL |
| mgn12c-carriage | MGN12C carriage envelope, 20 × 15 mm M3 pattern | STEP · STL |
| mgn15h-carriage | MGN15H carriage envelope, 25 × 20 mm M3 pattern | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mgn-linear-rails
Fits with
Questions
What are MGN12H carriage dimensions?
45.4 mm long, 27 mm wide, 13 mm high from the rail bottom; four M3 holes on a 20 × 20 mm pattern.
What is the hole spacing on an MGN12 rail?
25 mm pitch, Ø3.5 holes with a Ø6 counterbore 4.5 deep, for M3 socket screws. MGN9 is 20 mm pitch, MGN15 is 40.
MGN12C vs MGN12H?
Same width and height; C is the short block (34.7 mm, holes 20 × 15), H is the long block (45.4 mm, holes 20 × 20) with more load capacity.