Airtac LRM Miniature Linear Guide LRM12N2X345S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X345S10AP 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 length345 mm
- AccuracyP — precision 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 LRM12N2X345S10AP
LRM12N2X345S10AP is a complete set in the most accurate trim we stock for this size: a 345 mm stainless-steel rail, 12 mm wide, carrying two standard-length recirculating-ball carriages that arrive fitted and pre-greased. The P in the code is the precision accuracy grade, one step above H, specified where travel repeatability feeds a measurement rather than just a motion. Fixing is top-mount, with screws passing down through the rail into a prepared seat.
Underneath, each carriage recirculates Japanese ISO 3290 G10 balls - the grade describes the balls alone, not the assembly - behind a double-lip seal and an outer cover that keeps swarf off the seal strip. Ball retention holds the balls in place during handling, though the maker cautions that angling the carriage onto a rail or swapping it hastily can still drop them. Keep the ambient temperature at or below 80 C, briefly to 100 C - worth checking on a rig with hot lamps or motors nearby. LRM publishes no load or moment ratings; we confirm them for this exact configuration through the RFQ before you order.
Airtac LRM Miniature Linear Guide LRM12N2X345S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X345S10AP |
|---|---|
| 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 | 345 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12N2X345S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X345 | 2 carriages on a 345 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 345 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 LRM12N2X345S10AP Is Used
Optical comparator stage
A workshop optical comparator carrying small parts past the lens needs repeatable, play-free travel; the P precision grade of this set is the accuracy choice for that measurement path.
Enclosed sensor calibration slide
Inside a test enclosure holding a probe or shielded sensor, a carriage on this 345 mm rail positions the element against reference targets without measurable stick-slip.
Prototype strain-rig traverse
A university lab rig sweeping a strain gauge along a test coupon benefits from precision-grade travel, so each scan pass repeats onto the same line across repeated runs.
Is the Airtac LRM Miniature Linear Guide LRM12N2X345S10AP the Right Guide?
Decide by duty, not by habit: 12 mm LRM is for light, smooth, precise travel. Lock down the form (complete set), rail width 12 mm, standard carriage, two blocks, 345 mm rail, preload A, P accuracy, top-mount. Because price on stocked sets scales with rail length and carriage count rather than rail width, a 345 mm run sits comfortably inside the roughly $66 to $831 stocked span - trim travel before you upsize the series. If a real load or a cantilever enters the picture, move to LSH, whose per-carriage dynamic, static and moment ratings are published and ready for calculation, unlike LRM's. Short, rigid strokes point to LGC crossed rollers. Confirm the load rating with us for this exact configuration before ordering.
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 LRM12N2X345S10AP FAQ
It is a complete set: 12 mm stainless rail, 345 mm long, two standard carriages, preload A (none), P precision accuracy, top-mount fixing. Torque figures are 196 N.cm for M3 screws into steel, 127 N.cm into cast iron and 98 N.cm into aluminium (M2: 58.8 / 39.2 / 29.4). The ambient temperature limit is 80 C with brief 100 C peaks; re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model, so ask before ordering.
One complete assembly: the 345 mm rail with both precision-grade carriages mounted, pre-greased and ready to bolt down - no pairing-code matching is needed because the carriages never leave the rail in normal service. That matters because carriage-only LRM stock is thin (four SKUs), so a damaged carriage usually becomes a special order with a pairing code that must match your rail. Complete sets like this avoid that dependency entirely.
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 LRM12N2X345S10AP
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.