MGN12C / MGN12H Miniature Linear Guide — Standard & Extended Length Blocks
The MGN12 is the most common miniature guide size, used on 3D printer gantries, laser cutters and desktop CNC conversions. MGN12C is the standard block; MGN12H is the extended block for cantilevered heads that need more moment capacity on the same MGN R12 rail.
Specifications
| Model | MGN12C / MGN12H |
| Size | 12 mm |
| Block type | Miniature, standard (C) / extended (H) |
| Mounting | Top tapped |
| Accuracy grade | C / H / P |
| Preload | ZF / Z0 / Z1 |
| Matching rail | MGN R12 |
| Dynamic load C (kN) | On request |
| Static load C0 (kN) | On request |
| Block height H (mm) | 13 |
| Block width W (mm) | 27 |
| Block length L (mm) | 34.7 (C) / 45.4 (H) |
Note: Dimensions and load ratings for this size are issued on the signed datasheet. We do not publish unverified figures — ask us and we will send the current sheet the same day.
Options
- Block length: standard (C) or extended (H)
- Dust protection on request
- Stainless steel version on request
- Special rail lengths on request
Matching rail
MGN R12 rail is cut to order from 100 mm. See rail options.
Downloads
STEP (AP214) model and 2D drawing for this size are available on request — ask us and we will email them.
FAQ
| What is the difference between MGN12C and MGN12H? | C is the standard block, H is the extended block. The H block is longer and carries a higher moment load; both use the same MGN R12 rail. |
| Does MGN12H mean heavy load? | No. On the MGN series the H suffix means extended length, not heavy load. Load capacity is set by the 12 mm size. |
| Which accuracy and preload are available? | Accuracy C / H / P and preload ZF / Z0 / Z1. SP and UP are not offered on MGN. |
Request a quote for MGN12C / MGN12H
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