Airtac LRM Miniature Linear Guide LRM12N2X270S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X270S10AP 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 length270 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 LRM12N2X270S10AP
This AirTAC set combines a 12 mm stainless-steel rail, 270 mm long with a 10 mm end-hole offset, with two standard-length recirculating-ball carriages delivered on the rail and pre-filled with grease. The code spells the configuration out: N for the standard carriage body, two carriages on one rail, A for preload-free running, P for the precision accuracy class, and no trailing letter, so the rail fixes from the top.
Grade P is the tighter of the two accuracy classes offered on LRM, holding manufacture to precision tolerances across the full 270 mm of travel. With preload A the carriages roll with the least drag this series can give - an advantage when a stage is nudged by hand or driven by a small motor that would struggle against pre-tightened bearings. A double-lip seal in each carriage retains oil and excludes dust, an outer cover keeps chips off the seal strip, and the recirculating balls are made to ISO 3290 G10, a callout that applies to the balls alone and not to the guide as an assembly. Ambient temperature must stay at or below 80 C, peaks 100 C. One planning point: 270 mm sits well into the length range that drives LRM pricing - listed sets run from roughly $66 to $831 across the series, and nearly all of that spread comes from rail length and carriage count rather than rail width. Load and moment figures are not published for this series; ask us by RFQ and we will confirm them for this code.
Airtac LRM Miniature Linear Guide LRM12N2X270S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X270S10AP |
|---|---|
| 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 | 270 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 LRM12N2X270S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X270 | 2 carriages on a 270 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, 270 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 LRM12N2X270S10AP Is Used
Optics alignment carriage
Sliding a lens holder or fold mirror along a 270 mm axis on an optical bench - preload-free running means minimal stick-slip when the position is set by hand or by a fine screw drive.
Small sensor assembly head
A pick-and-place head moving electronic sensor packages between tray and test socket on a compact gantry, where precision grade P holds path accuracy over the whole 270 mm run.
Dimensional comparator slide
A bench comparator that glides small parts under a measuring camera for dimensional checks - the P grade and G10 ball sets keep the motion repeatable, and lab air never approaches the 80 C ceiling.
Is the Airtac LRM Miniature Linear Guide LRM12N2X270S10AP the Right Guide?
Choose LSH rather than LRM whenever the payload is heavy or overhung, because the LSH catalogue gives you real dynamic, static and moment ratings per carriage to drop into a calculation - LRM publishes none, and this precision set is no exception. When the travel is short and the machine needs crossed-roller stiffness, LGC is the better cross-shopping choice. Before ordering, walk the checklist: form is a complete set (rail plus two standard carriages), 12 mm rail width, 270 mm rail length, preload A with no bearing pre-tightening, accuracy P, top-mount fixing. A no-preload carriage runs with minimal resistance, but check with us that the application genuinely does not need play removed - and either way, confirm the load rating for this exact model with us 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 LRM12N2X270S10AP FAQ
Rail width 12 mm; rail length 270 mm with a 10 mm end-hole offset; two standard-length carriages; preload A, meaning none; accuracy P, the precision class; top-mount rail fixing. For fixing screws: M3 torque to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium, and M2 to 58.8, 39.2 and 29.4 N.cm respectively. The ambient limit is 80 C with transient peaks to 100 C, and re-grease with Kyodo Yushi PS No. 2 every 100 km of travel or every 3 to 6 months. Dynamic load, static load and moment ratings are not published for LRM - we confirm them per model.
LRM12N2X270S10AP suits light-duty miniature positioning where a tight envelope and smooth, low-drag motion matter most. LSH is the larger series and publishes per-carriage dynamic, static and moment ratings, so any design with a substantial or cantilevered load should be sized there - LRM gives you no published figures to calculate from, and we confirm them model by model instead. For short travels where crossed-roller rigidity is the priority, compare LGC before deciding.
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 LRM12N2X270S10AP
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.