Airtac LRM Miniature Linear Guide LRM12N1X320S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X320S10APT 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.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length320 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 LRM12N1X320S10APT
When screw heads on the rail crown would foul a part passing above, the trailing T in LRM12N1X320S10APT is the answer: this is a bottom-mount LRM12 set, for machine beds where the top of the rail must stay flush and clear. You still get the same 12 mm wide stainless-steel rail, 320 mm of it, with a single standard-length carriage already running on it and pre-filled with Kyodo Yushi PS No. 2 grease.
Accuracy is grade P, the tighter option, and the carriage rides on ISO 3290 G10 balls - the grade covers the balls only, never the assembly - held by a ball-retention design behind a double-lip seal and an outer cover. Because bottom-mounting hands the positional work to the surface under the rail, that surface should be ground or finish-milled to hold travel accuracy. The ambient temperature ceiling is 80 C, with peaks to 100 C. Load and moment ratings are not published for LRM; quote this part number in an RFQ and we will confirm the figures for this exact set.
Airtac LRM Miniature Linear Guide LRM12N1X320S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X320S10APT |
|---|---|
| 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 | 320 mm (spliced sections) |
| 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 LRM12N1X320S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X320 | 1 carriage on a 320 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, 320 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.
Where the Airtac LRM Miniature Linear Guide LRM12N1X320S10APT Is Used
Lens focusing carriage
A compact vision system shifts its lens barrel along a 320 mm track to lock focus across a part family; bottom-mount fixing keeps the top of the rail clear for the lens bracket to pass over.
IC handler slide
A semiconductor test handler shuttles packages between tray and test socket. The bottom-mounted rail presents a flat top surface, and the P grade holds path accuracy run after run.
PCB dispensing slide
Glue or solder-paste dispensing on small boards asks for smooth, short X-strokes. This 12 mm precision rail drives the dispenser head without the bulk of a full-size guide.
Is the Airtac LRM Miniature Linear Guide LRM12N1X320S10APT the Right Guide?
If the load is heavy or cantilevered, move up to LSH, where the catalogue lists dynamic, static and moment ratings per carriage that you can design against - LRM publishes none of these, so the numbers have to come from us. For short travel needing crossed-roller stiffness, look at LGC instead. Match checklist for this code: set form, 12 mm rail width, standard carriage length, single carriage, 320 mm rail, no preload (lowest drag, most internal play), precision P accuracy, bottom-mount direction, and a load rating confirmed with us before commit.
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 LRM12N1X320S10APT FAQ
Published data for this set: 12 mm rail width, 320 mm length, one standard carriage, preload A, precision P grade, bottom-mount. M2 mounting screws take 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminum; M3 takes 196, 127 and 98 N.cm. Keep ambient temperature at or under 80 C with peaks to 100 C, and re-lubricate at 100 km of travel or every 3 to 6 months, whichever comes first. Dynamic, static and moment ratings are not published for LRM - ask us and we confirm them for this configuration.
LRM earns its place when the envelope is small and the duty is light - a 12 mm rail with a single carriage suits compact, low-force positioning. If the load is substantial or the carriage works on a cantilever, LSH is the better pick: its catalogue publishes per-carriage dynamic, static and moment ratings you can calculate with, while LRM publishes none and every rating must be confirmed with us. If travel is short but stiffness matters more than size, LGC's crossed rollers are the alternative.
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 LRM12N1X320S10APT
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.