Airtac LRM Miniature Linear Guide LRM12L2X345S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X345S10AP 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 lengthLong 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 LRM12L2X345S10AP
The LRM12L2X345S10AP is a complete miniature linear guide: one stainless-steel rail 12 mm wide and 345 mm long, carrying two long-series (L) recirculating-ball carriages on the same run. The rail arrives drilled for M3 top-mount fixing screws with a 10 mm end-hole offset, so you bolt it to a ground or finish-milled seat from above and it is ready to travel.
This is the precision (P) grade with preload code A, meaning zero preload: the carriages run freely with minimal drag, and the P grade governs how straight they track. Inside each carriage the balls are ISO 3290 G10 grade, Japanese made, which keeps recirculation smooth; a double-lip seal scrapes oil and excludes dust, while an outer cover shields the seal strip and hides the screw heads. The ball-retention design keeps the balls with the carriage during handling, though inserting at an angle or swapping hastily can still drop them. Ambient temperature must stay at or below 80 C, with transients no higher than 100 C. AirTAC publishes no load or moment ratings for LRM; we confirm the figures for this exact model before you order - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X345S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X345S10AP |
|---|---|
| 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 | Long 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 LRM12L2X345S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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 LRM12L2X345S10AP Is Used
Optical inspection stage
A small vision-inspection slide carrying a camera or sample holder over a 345 mm run benefits from the P grade's straight tracking and the free-rolling A preload, where a light hand push must not stick.
PCB AOI camera rail
Automated optical inspection of populated circuit boards calls for repeatable line-to-line travel; two long carriages on one rail steady the camera head against pitch along the travel.
Laser alignment slide
Trimming a beam path on a compact optical bench needs repeatable, low-drag positioning; the stainless rail and sealed ball circuits keep the motion consistent session after session.
Is the Airtac LRM Miniature Linear Guide LRM12L2X345S10AP the Right Guide?
If the load is substantial or hangs off a cantilever, step up to the LSH series: it publishes basic dynamic, static and moment ratings per carriage that you can plug straight into a calculation, which LRM does not. If the travel is short and the job demands crossed-roller rigidity instead of ball recirculation, look across at LGC. To match this set: form is a complete set (rail plus two long carriages), 12 mm rail width, 345 mm rail length, preload A (none - lowest friction, but any system play is felt on direction reversal, so consider B or C if you need the play taken up), accuracy P, top-mount rail, and confirm the load rating with us before committing.
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 LRM12L2X345S10AP FAQ
Rail width 12 mm, rail length 345 mm, two long carriages, preload A (none), accuracy grade P, top-mount mounting, 10 mm end-hole offset. M3 fixing screws torque to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium. Ambient temperature must not exceed 80 C with transients to 100 C; re-grease every 100 km of travel or every 3 to 6 months with Kyodo Yushi PS No. 2. Load and moment ratings are not published for LRM - we confirm them per model before you order.
Choose LRM12 when the envelope is tight and the duty is light precision: it is the smallest end of the range and 924 of the 988 sets we stock are LRM12, so this configuration ships quickly. Choose LSH when the load is heavy or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that let you verify capacity on paper - LRM offers no such table, so for LRM we confirm ratings with you per model.
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 LRM12L2X345S10AP
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.