Airtac LRM Miniature Linear Guide LRM12N2X320S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X320S10AP 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 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 LRM12N2X320S10AP
LRM12N2X320S10AP is a precision-grade AirTAC LRM miniature linear guide set: one 320 mm stainless-steel rail, 12 mm wide, 10 mm end-hole offset, carrying two standard-length recirculating-ball carriages, top-mounted, with no preload (grade A) and accuracy grade P - the tighter of the two grades LRM offers, above the standard H.
Precision grade only delivers on a prepared machine: the catalogue requires the mounting surfaces to be ground or finish-milled for the rated travel accuracy to hold, so budget for that machining step when you specify P. With two carriages on one rail, set the datum reference on the same side for both to keep running accuracy at its best. The balls themselves are Japanese-made ISO 3290 G10 - a grade that covers the balls only, not the guide assembly - running behind a double-lip seal that controls oil scraping and dust exclusion, with an outer cover protecting the seal strip. Ambient temperature must stay at or below 80 C, peaks to 100 C. Note that P grade costs more and pairs here with zero preload, so it suits measuring duties where free-running smoothness matters more than shock resistance. Load and moment ratings are not published for LRM; the RFQ is where we confirm the figures for this specific model.
Airtac LRM Miniature Linear Guide LRM12N2X320S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X320S10AP |
|---|---|
| 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 | 320 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 LRM12N2X320S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X320 | 2 carriages 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, 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 LRM12N2X320S10AP Is Used
Laser marking head axis
A compact fiber-laser marker sweeps its focus head along a 320 mm axis over small parts; precision grade P keeps the beam path repeatable pass after pass.
Medical device assembly fixture
A benchtop cell places tiny components into catheter and sensor assemblies; the unpreloaded, precision-grade carriage positions gently and repeatably in a clean, dry environment.
Comparator measuring slide
A small-gauge comparator carries a probe along a controlled axis past a reference standard; grade P running on a ground surface gives the repeatability the measurement needs.
Is the Airtac LRM Miniature Linear Guide LRM12N2X320S10AP the Right Guide?
No published load table exists for LRM, so if your sizing depends on numbers, LSH is the family with per-carriage dynamic, static and moment ratings you can verify against your duty cycle; LGC covers short-travel work that needs crossed-roller rigidity. Stay with this LRM set when the envelope is small and the duty light but the accuracy requirement is above standard. Check: complete-set form, 12 mm rail width, standard carriage length, two carriages, 320 mm rail, 10 mm end offset, preload A - the freest-running grade, chosen here so precision motion is not fought by internal preload, at the cost of the least shock tolerance - accuracy P, top-mount fixing, and confirmation of the load rating with us before you commit. Also confirm your mounting surfaces can be ground or finish-milled, since P grade assumes it.
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 LRM12N2X320S10AP FAQ
Complete set with a 12 mm wide stainless rail, 320 mm long, 10 mm end-hole offset, top-mount fixing, two standard-length carriages, preload A (none) and precision accuracy grade P. Torque M3 screws to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium; M2 screws take 58.8, 39.2 and 29.4 N.cm. The ambient temperature limit is 80 C with transient peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months through the carriage lubrication hole. Achieving P grade requires ground or finish-milled mounting surfaces. Load and moment ratings are not published for LRM; we confirm them per model via the RFQ.
The deciding factor is usually whether you need published numbers. LSH publishes per-carriage dynamic, static and moment ratings, so you can size a cantilevered or heavy load on paper; LRM publishes none of these, and any LRM selection ends with us confirming the figures for your exact model. What this LRM12 set offers in return is a 12 mm rail in a miniature envelope, 320 mm of travel, two standard carriages, zero preload for free-running motion, and precision grade P - with the caveat that P grade demands ground or finish-milled mounting surfaces to deliver its rated accuracy, and that the ISO 3290 G10 ball grade applies to the balls alone. For short travel with crossed-roller rigidity, compare LGC. Send your duty details through the RFQ and we will confirm the right choice.
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 LRM12N2X320S10AP
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.