Airtac LRM Miniature Linear Guide LRM12N2X320S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X320S10APT 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 LRM12N2X320S10APT
LRM12N2X320S10APT is a complete AirTAC LRM miniature linear guide: one stainless-steel rail, 320 mm long and 12 mm wide, carrying two standard-length recirculating-ball carriages. The mounting holes sit 10 mm in from each rail end. The trailing T in the code means the rail bolts down from below - the screws pass through the rail into a base plate, so the top face stays completely clear for your own fixtures.
Two points define this variant. The P in the code is the precision accuracy grade, the tighter of the two grades LRM offers, which matters when a stage must return to position without drift. And with two carriages on one rail, the pair resists tipping along the direction of travel. The carriages run on Japanese ISO 3290 G10 balls (that grade covers the balls only - it is not a standard for the assembled guide), behind a double-lip seal and an outer cover that keeps debris off the seal strip. Ambient temperature must stay at or below 80 C, with momentary peaks to 100 C. Load and moment ratings are not published for LRM, so we confirm the figures for this exact model - send the RFQ and we will come back with them.
Airtac LRM Miniature Linear Guide LRM12N2X320S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X320S10APT |
|---|---|
| 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 (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 LRM12N2X320S10APT
| 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 LRM12N2X320S10APT Is Used
Under-stage optics carrier
A precision-graded bottom-mount rail carries an optics turret beneath a benchtop inspection microscope, leaving the top surface of the plate unobstructed for the sample.
Semiconductor tray indexer
Two carriages on one precision rail index a wafer-dice tray between vision check and packing positions in a compact handler.
PCB test-head traverse
A flying-probe fixture rides on two blocks along the 320 mm travel, where free-running grade A motion keeps probe contact gentle on fine-pitch boards.
Is the Airtac LRM Miniature Linear Guide LRM12N2X320S10APT the Right Guide?
Step up to AirTAC LSH if the load is substantial or overhung: LSH publishes per-carriage dynamic, static and moment ratings you can size against on paper, which LRM does not. Step across to LGC when the travel is short and the job needs the rigidity of crossed rollers. Before ordering, tick the checklist: complete set with rail included, 12 mm rail width, standard carriage length, two blocks on a 320 mm rail, no preload (grade A - the most forgiving of surface finish and alignment), precision accuracy, bottom-mount direction. Mounting surfaces should be ground or finish-milled to reach the rated travel accuracy, and we will confirm the load rating for this model before you 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 LRM12N2X320S10APT FAQ
Rail width 12 mm, rail length 320 mm, two standard-length carriages, 10 mm end-hole offset, preload grade A (none), precision accuracy (P), bottom-mount rail. Use M3 screws at 196 N.cm into steel, 127 N.cm into cast iron or 98 N.cm into aluminium; for M2 screws use 58.8, 39.2 and 29.4 N.cm respectively. Keep ambient temperature at or below 80 C (100 C peaks) and 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 us before ordering.
LRM is the miniature range, chosen for a tight envelope and smooth light-duty travel; it publishes no dynamic, static or moment ratings, so sizing leans on our confirmation per model. LSH is the larger series and its catalogue prints per-carriage dynamic, static and moment figures you can check yourself. If your load is meaningful or cantilevered, size it in LSH first; if the envelope is the constraint and the duty is light, this LRM set is the fit - and we will verify the ratings before the order.
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 LRM12N2X320S10APT
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.