MGN9C/H, MGN12C/H and MGN15H carriages — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/mgn-carriages/  (CC BY 4.0)
Basis: HIWIN MGN catalogue carriage envelope (L × W × H, H1) and mounting pattern
Catalog version: 2026-10-20

Sizes: see table below
- 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.

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

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- HIWIN: MGN series linear guideway catalogue — PDF, STEP — HIWIN site terms [verify license at link] — https://www.hiwin.com/en/products/linear-guideways/mgn-mgw-series
- Wikipedia: Linear-motion bearing — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Linear-motion_bearing

Free files (CC BY 4.0, Xem Studio; STEP + STL, 5 parts): https://xemstudio.com/files/hardware/mgn-carriages/index.json
API: https://xemstudio.com/api/geometry?object=mgn-carriages