
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X345S10CP is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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.
LRM12N1X345S10CP is a complete AirTAC miniature linear guide: a single 345 mm rail, 12 mm wide in stainless steel, with one standard-length ball carriage fitted. This code carries the P suffix, AirTAC's precision accuracy grade, and the rail fixes from the top in the usual way. The set arrives assembled, pre-greased and ready to bolt down.
Accuracy grade P governs the guide's dimensional tolerances, so the carriage tracks the rail more faithfully than the high grade - useful when a probe or optics must repeat their path. Preload C removes play for a firmer feel, trading a touch of drag. Double-lip seals and an outer cover guard the raceways, and the carriage runs on Japanese ISO 3290 G10 balls, a grade that applies to the balls only. Keep ambient temperature at or under 80 C, with 100 C peaks. There is no published load rating for LRM; name this model on an RFQ and we confirm the figure.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X345S10CP |
|---|---|
| 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 | 1 |
| 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 | C — medium 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X345 | 1 carriage on a 345 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| P | P — precision grade. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 345 mm |
| Carriage | Yes, 1 |
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.
Precision grade P keeps a compact camera carriage tracking true along the 345 mm rail, so board or part images stay registered frame to frame.
Medium preload removes backlash for fine optical adjustment, while the low-friction recirculating design gives the smooth micro-moves a slit mechanism needs.
On a small PCB line, this 12 mm guide carries a light dispensing head; the double-lip seal and outer cover help keep flux and dust out of the raceways.
A budgeting note first: across our stocked LRM range, prices run from about $66 to $831 on just two rail widths, so nearly all of that spread comes from rail length and carriage count - trimming travel is the cheapest way to cut cost before touching the size. For heavy or cantilevered loads move up to LSH, whose per-carriage dynamic, static and moment ratings let you size from a datasheet; LRM publishes none. For short travel needing crossed-roller rigidity, look at LGC. Checklist for this SKU: complete set, 12 mm rail, 345 mm long, one standard carriage, preload C, accuracy P, top-mount - and confirm the load rating with us first.
Quick checklist
Rail width 12 mm, rail length 345 mm, one standard-length carriage, preload C (medium), accuracy grade P (precision), top-mount rail. Mounting screws: M2 at 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium; M3 at 196, 127 and 98 N.cm. Keep the ambient at 80 C maximum, peaking to 100 C, and re-grease every 100 km of travel or every 3 to 6 months. Note that LRM has no published load or moment ratings - we confirm them for this model when you send an RFQ.
One assembled set: the 345 mm stainless rail with the single standard carriage already mounted and greased with Kyodo Yushi PS No. 2. It is not a carriage-only part, and no spare rails or carriages are included. If you later need a replacement carriage alone, our carriage-only stock is very thin and usually a special order, matched to a rail by pairing code. Load and moment ratings are not published for LRM; we confirm them per model.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.