MGN9C/H, MGN12C/H and MGN15H carriages
What are MGN12H carriage dimensions and mounting holes? · Hardware · basis: HIWIN MGN catalogue carriage envelope (L × W × H, H1) and mounting pattern
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 5 in table
Notes
- Block envelopes with the rail channel at the exact rail section. The block's underside sits H1 above the rail bottom (MGN9 2.0, MGN12 3.0, MGN15 4.0), so the file's block height is H − H1: 8, 10, 12.
- Assembled height H from the rail bottom: MGN9 10, MGN12 13, MGN15 16.
- Four M3 holes, drawn at Ø3 (thread major), across × along the rail: MGN9H 15 × 16, MGN9C 15 × 10, MGN12H 20 × 20, MGN12C 20 × 15, MGN15H 25 × 25.
- C is the short block, H the long one; same width and height.
Sizes
| carriage | L | W | H assembled | block height | holes across × along |
|---|---|---|---|---|---|
| MGN9C | 28.9 | 20 | 10 | 8 | 15 × 10 |
| MGN9H | 39.9 | 20 | 10 | 8 | 15 × 16 |
| MGN12C | 34.7 | 27 | 13 | 10 | 20 × 15 |
| MGN12H | 45.4 | 27 | 13 | 10 | 20 × 20 |
| MGN15H | 58.8 | 32 | 16 | 12 | 25 × 25 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| rail holes | Ø3.5 through, counterbore Ø6 × 3.5 (MGN9) / 4.5 | M3 socket head screws | designed | all |
| carriage holes | M3 (Ø3 major) | M3 screws | designed | all |
| rail section | 9 × 6.5 / 12 × 8 / 15 × 10 | carriage channel | designed | all |
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 5 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| mgn9h-carriage | MGN9H carriage envelope 39.9 × 20 × 10 (H from rail bottom), 4 × M3 on 15 across × 16 along | STEP · STL |
| mgn9c-carriage | MGN9C carriage envelope 28.9 × 20 × 10 (H from rail bottom), 4 × M3 on 15 across × 10 along | STEP · STL |
| mgn12h-carriage | MGN12H carriage envelope 45.4 × 27 × 13 (H from rail bottom), 4 × M3 on 20 across × 20 along | STEP · STL |
| mgn12c-carriage | MGN12C carriage envelope 34.7 × 27 × 13 (H from rail bottom), 4 × M3 on 20 across × 15 along | STEP · STL |
| mgn15h-carriage | MGN15H carriage envelope 58.8 × 32 × 16 (H from rail bottom), 4 × M3 on 25 across × 25 along | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mgn-carriages

How it fits
Goes in or on
Alternatives
Also needed
You might also need
Questions
What are MGN12H carriage dimensions?
45.4 long, 27 wide, 13 high from the rail bottom; four M3 on 20 × 20.
MGN12C vs MGN12H?
Same width and height; C is 34.7 long with holes 20 × 15, H is 45.4 long with holes 20 × 20.
