MGN9H Miniature Linear Guide Carriage for MGN9 Rail
The DLY MGN9H carriage is a miniature linear guide block used with MGN9 linear guide rails. It is designed for compact linear motion systems where installation space is limited but smooth movement, stable guidance and reliable positioning are still required.
The "H" type refers to the long carriage structure in the MGN miniature guideway series. Compared with the shorter MGN9C carriage, the MGN9H carriage has a longer block body, higher load rating and better moment support, making it suitable for compact mechanisms that need improved rigidity and running stability.
DLY can supply the MGN9H carriage as a separate block or as a matched rail-and-block set according to the required rail length, block quantity, preload, accuracy grade and application conditions.
MGN9H Product Overview
| Product Name | MGN9H Carriage / Miniature Linear Guide Block |
| Matched Rail | MGN9 linear guide rail |
| Rail Width | 9 mm |
| Carriage Type | H type long carriage |
| Main Use | Compact automation, precision positioning, small linear modules, measuring equipment and light-load motion systems |
| Supply Form | Carriage only, rail and carriage set, or matched assembly according to order requirements |
Why Choose the MGN9H Long Carriage?
The MGN9H carriage is selected when a compact machine needs more stable motion than a short miniature carriage can provide. The longer block body allows a longer ball circulation structure and improves load and moment support while keeping the rail width at only 9 mm.
This structure is useful for small slides, inspection devices, camera positioning units, laboratory automation equipment, electronic assembly machines and miniature linear modules. It is especially suitable when the moving part is compact but still needs controlled straight-line movement.
For best performance, the rail mounting surface should be flat and clean, and the rail should be installed with proper parallelism when two rails are used together. Poor installation may cause tight movement, noise, uneven loading or shorter service life.
MGN9H Main Dimensions
The following dimensions are used for model confirmation, mounting design and replacement selection. Please check the drawing and actual installation space before ordering.
| Item | Symbol | MGN9H Value | Meaning |
|---|---|---|---|
| Assembly height | H | 10 mm | Overall height from rail bottom to carriage top surface |
| Mounting reference height | H1 | 2 mm | Height reference related to the block mounting surface |
| Reference distance | N | 5.5 mm | Side reference dimension for installation layout |
| Carriage width | W | 20 mm | Overall block width |
| Mounting hole pitch across width | B | 15 mm | Distance between mounting holes across the carriage width |
| Edge distance | B1 | 2.5 mm | Distance from block side edge to mounting hole center |
| Mounting hole pitch along length | C | 16 mm | Distance between mounting holes along the carriage length |
| Carriage body length | L1 | 29.9 mm | Main carriage body length |
| Overall carriage length | L | 39.9 mm | Overall carriage length including end parts |
| Carriage mounting thread | M × l | M3 × 3 | Thread specification for block mounting |
MGN9 Rail Dimensions
The MGN9H carriage must be used with the correct MGN9 rail. Rail width, rail height, hole pitch and mounting bolt size should be checked before replacement or assembly.
| Rail Item | Symbol | Value | Selection Meaning |
|---|---|---|---|
| Rail width | WR | 9 mm | Main rail size for MGN9 series |
| Rail height | HR | 6.5 mm | Rail height used for installation space confirmation |
| Rail top width | D | 6 mm | Rail mounting structure dimension |
| Mounting hole depth | h | 3.5 mm | Used for rail mounting hole confirmation |
| Mounting hole diameter | d | 3.5 mm | Rail hole size for mounting bolt selection |
| Rail hole pitch | P | 20 mm | Distance between rail mounting holes |
| End distance | E | 7.5 mm | Reference dimension at the rail end |
| Rail mounting bolt | - | M3 × 8 | Common bolt size for rail installation |
Load Rating and Weight
MGN9H is a miniature carriage, so it is suitable for compact and light-load structures rather than heavy machine tool axes. Load direction, moment load, acceleration, stroke, lubrication and installation accuracy should all be considered during selection.
| Performance Item | Symbol | MGN9H Value | Note |
|---|---|---|---|
| Basic dynamic load rating | C | 2.55 kN | Used for service life estimation under motion load |
| Basic static load rating | C0 | 4.02 kN | Used to evaluate static load and impact margin |
| Static rated moment | MR | 19.60 N·m | Moment rating around the rolling direction reference axis |
| Static rated moment | MP | 18.62 N·m | Moment rating used for pitch direction load evaluation |
| Static rated moment | MY | 18.62 N·m | Moment rating used for yaw direction load evaluation |
| Carriage weight | - | 0.026 kg | Approximate block weight |
| Rail weight | - | 0.38 kg/m | Approximate rail weight per meter |
MGN9H vs MGN9C: How to Choose
MGN9C and MGN9H use the same 9 mm rail width, but the carriage length is different. The MGN9C type is shorter and more compact, while the MGN9H type provides higher load capacity and better stability because of its longer block structure.
| Selection Item | MGN9C Short Carriage | MGN9H Long Carriage |
|---|---|---|
| Installation space | Better for very short installation length | Requires more length but still keeps a compact 9 mm rail width |
| Load capacity | Suitable for lighter loads | Higher dynamic and static load ratings |
| Motion stability | Suitable for simple compact slides | Better for longer stroke, offset load or higher rigidity needs |
| Typical choice | Space-limited light-load mechanism | Compact precision motion system needing stronger support |
Typical Applications
The MGN9H carriage is suitable for compact equipment where a narrow rail is required but the moving unit still needs stable support. It is often used in precision mechanisms rather than heavy-load industrial axes.
| Application Area | Typical Equipment | Why MGN9H Fits |
|---|---|---|
| Compact automation | Small pick-and-place units, light-duty slides, compact actuators | Narrow rail width and long carriage structure help save space while improving stability. |
| Electronic assembly | PCB handling, inspection fixtures, small positioning platforms | Smooth sliding and compact mounting help support repeated motion in small equipment. |
| Optical and measuring devices | Camera positioning, sensor stages, measuring fixtures | Stable guidance supports controlled movement in precision adjustment structures. |
| Laboratory and medical equipment | Sample handling, analyzer movement, compact test modules | Miniature size helps fit narrow internal layouts while maintaining reliable motion. |
| Small linear modules | Miniature guide units, lightweight Z-axis or X-Y adjustment stages | The long carriage provides better support than a short carriage in compact module structures. |
FAQ
Q: What does MGN9H mean?
A: MGN9H refers to a miniature linear guide carriage used with a 9 mm wide MGN rail. The "H" type is the long carriage version, offering higher load capacity and better stability than the shorter C type.
Q: Can MGN9H be used with MGN9C rail?
A: MGN9H and MGN9C are carriage types for the same MGN9 rail size. The key difference is the carriage length and load capacity. Rail compatibility should still be confirmed according to actual rail specification and tolerance condition.
Q: Is MGN9H suitable for heavy-load equipment?
A: MGN9H has better load capacity than the short MGN9C carriage, but it is still a miniature guide block. For heavy-load machine tools or high-impact applications, a larger linear guideway series should be considered.
Q: Can DLY supply MGN9H with a custom rail length?
A: Yes. DLY can supply MGN9H carriages with matched MGN9 rails according to the required rail length, block quantity and application conditions.
Q: What information is needed for a quotation?
A: Please provide the model number, rail length, block quantity, accuracy or preload requirement, order quantity and working environment. Drawings or photos are helpful for replacement and compatibility confirmation.
Need Help Selecting an MGN9H Carriage?
Send DLY your required rail length, block quantity, load condition, stroke and installation drawing. Our team can help confirm whether MGN9H is suitable or whether another miniature linear guide block size is a better choice.
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