Airtac LRM Miniature Linear Guide LRM12N2X303S14AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X303S14AH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriages. It is the small end of the range, for light-duty precision positioning in a tight envelope — compact stages, small pick-and-place heads and inspection fixtures.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthStandard carriage
- Carriages2
- Rail length303 mm
- AccuracyH — high grade
- PreloadA — no preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LRM Miniature Linear Guide LRM12N2X303S14AH
LRM12N2X303S14AH is a complete AirTAC LRM miniature linear guide: one 12 mm wide stainless-steel rail cut to 303 mm with a 14 mm end-hole offset, carrying two standard-length recirculating-ball carriages that arrive fitted to the rail, pre-greased and ready to bolt down. Preload is grade A - none - and the accuracy grade is H, high.
This 303 mm cut is one of 102 different stocked rail lengths between 40 and 995 mm, so the exact length ships without a special cutting order - and across the range it is length, not width, that drives most of the price spread. The carriages run on Japanese-made ISO 3290 G10 balls, a grade that applies to the balls alone and not to the assembly, behind a double-lip seal that scrapes oil back and keeps dust out, with an outer cover shielding the seal strip from larger debris. Ball retention holds the balls in place during handling, though the maker warns that inserting a carriage at an angle or swapping it hastily can still drop balls. Ambient temperature must stay at or below 80 C with transient peaks to 100 C. Load and moment ratings are not published for LRM; send the RFQ and we will confirm the figures for this exact model.
Airtac LRM Miniature Linear Guide LRM12N2X303S14AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X303S14AH |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM12 |
| Rail width | 12 mm |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 303 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | A — no preload |
| Mounting screws | M2 or M3 rail screws depending on size |
| Lubrication | Pre-filled with Kyodo Yushi PS No. 2; top up through the rear lubrication hole |
| Ambient temperature | Up to 80 °C ambient, 100 °C transient peak |
| Interchangeability | LRM carriages fit LRM rails of the same model |
Specifications follow the official AirTAC LRM catalogue. The catalogue does not publish load or moment ratings, running parallelism, speed limits, or carriage base material for LRM. We will not quote a figure we cannot source — ask us and we will confirm it for your model.
Model Code: Airtac LRM Miniature Linear Guide LRM12N2X303S14AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X303 | 2 carriages on a 303 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 303 mm |
| Carriage | Yes, 2 |
Rail and carriage(s) supplied together, matched as a set. If you are not sure which form you need, send us the machine or the original part number and we will confirm it before you order.
Where the Airtac LRM Miniature Linear Guide LRM12N2X303S14AH Is Used
Optical inspection fixture
A microscope or camera head travels 300 mm over populated circuit boards; the twin carriages keep the optical axis from nodding along the direction of travel.
Sample alignment stage
A laboratory autosampler lines vials up with an analysis port using a short, smooth stroke; the no-preload carriage moves with minimal breakaway force for repeatable positioning.
Micro-dosing pump axis
A syringe pump advances in microlitre increments; fine adjustment benefits from the low-friction, unpreloaded running of the standard carriage.
Is the Airtac LRM Miniature Linear Guide LRM12N2X303S14AH the Right Guide?
Size up before you commit. Where the load is substantial or cantilevered, LSH is the stronger family because it publishes per-carriage dynamic, static and moment ratings you can calculate against - LRM publishes none of these. If travel is short and the job demands crossed-roller rigidity, step across to LGC. To match this set, check: form (complete set, rail included), 12 mm rail width, standard carriage length, two carriages, 303 mm rail with 14 mm end offset, preload A - which gives the freest running and the lowest drag but the least rigidity - accuracy H, top-mount fixing, and confirm the load rating with us before ordering. A 303 mm axis also costs less than a full-length one: trim travel before you resize.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LRM Miniature Linear Guide LRM12N2X303S14AH FAQ
Complete set with one 12 mm wide stainless rail, 303 mm long, 14 mm end-hole offset, top-mount fixing, two standard-length carriages, preload A (none) and accuracy grade H. For M3 screws torque to 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium; for M2 screws use 58.8, 39.2 and 29.4 N.cm respectively. Ambient temperature must stay at or below 80 C with transient peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months - at a 200 mm stroke cycling once a second, 100 km passes in roughly three weeks of continuous running, so the distance binds before the calendar. Basic dynamic, static and moment load ratings are not published for LRM; we confirm them per model on request.
You receive both carriages mounted on the 303 mm rail, pre-filled with Kyodo Yushi PS No. 2 grease. Mounting screws, top-up lubricant and a dummy rail are not included. If you plan field carriage swaps, note that only four carriage-only SKUs are stocked across the whole LRM line, so a spare carriage is normally a special order - and even with ball retention, fitting a carriage at an angle or rushing the swap can drop balls, which is why a dummy rail is recommended.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LRM Miniature Linear Guide LRM12N2X303S14AH
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours. We can also confirm the load and moment rating for this model.