Airtac LRM Miniature Linear Guide LRM12L2X270S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X270S10APT 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 lengthLong 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 LRM12L2X270S10APT
Two attributes define LRM12L2X270S10APT: precision (P) accuracy and a bottom-mount rail. The set comprises one 12 mm wide, 270 mm long stainless-steel rail with two long recirculating-ball carriages, preload class A (none) and a 10 mm end-hole offset, delivered as a ready-to-fit pair of blocks already on the rail.
Combining the tighter P tolerances with under-rail fixing suits instruments where both measurement quality and a clean top surface matter - optical benches and slim measurement frames are the obvious homes. Ball retention keeps the balls captive during handling, though the manufacturer warns that fitting a carriage at an angle, or in haste, can still shed balls; on an inclined rail, hold the carriage, which can slide under its own weight. Inside, the balls are ISO 3290 G10, Japanese-made; the double-lip seal and outer cover protect the raceways and seal strip. Ambient temperature must stay within 80 C, peaking briefly at 100 C. No load or moment rating is published for LRM - request the confirmed per-model figures through our RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X270S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X270S10APT |
|---|---|
| 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 | Long carriage |
| Carriages supplied | 2 |
| Rail length | 270 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 LRM12L2X270S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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 LRM12L2X270S10APT Is Used
Laboratory autosampler retrofit
Replacing a worn slide in an autosampler with a fresh precision set restores smooth needle positioning without redesigning the frame - the bottom-mount holes match recessed fixings.
Enclosure door on a clean cabinet
A sealed instrument cabinet with a sliding guard door uses the under-rail fixings to keep the exterior face unbroken and easy to wipe down.
Electronics sorting module
On a sorting module that diverts small components by weight or vision, a precision miniature rail keeps the divert arm aligned over a 270 mm run.
Is the Airtac LRM Miniature Linear Guide LRM12L2X270S10APT the Right Guide?
Since AirTAC publishes no load, moment or speed data for LRM, selection rests on envelope, accuracy grade and smoothness - and this code offers the P grade for tighter travel tolerances. If your design needs published numbers to size against, AirTAC LSH provides per-carriage dynamic, static and moment ratings in its datasheet and suits heavier or overhung loads. For short strokes needing crossed-roller stiffness, compare LGC.
Before ordering, confirm: complete set form, 12 mm rail width, 270 mm rail length, two long carriages, preload A (none - compliant and easy to fit, but the least resistant to moment rock), P accuracy, bottom-mount fixing, 10 mm end offset. Grinding or finish-milling the mounting surfaces is required for the rated accuracy, and either rail face can serve as datum - pick one side and keep it consistent if you add carriages. Ask us to confirm the load rating for this exact build; LSH remains the safer pick if your numbers are marginal.
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 LRM12L2X270S10APT FAQ
Rail: stainless steel, 12 mm wide, 270 mm long, mounted from below. Carriages: two, long type, preload A (none), accuracy P (precision). M3 screw torque: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Ambient temperature limit: 80 C, with transient peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. AirTAC does not publish load, moment or running-parallelism data for LRM; we confirm the ratings for this exact model through the RFQ.
Yes - the 270 mm stainless-steel rail and both long carriages ship as one assembled set, not as separate carriage and rail SKUs. Fixing is from below through the bottom-mount holes with M3 screws, so the rail needs a matching recess or tapped underside in your baseplate. If a carriage ever needs individual replacement, note that rails and carriages must share a pairing code, and our carriage-only stock is very thin - most replacement blocks are a special 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 LRM12L2X270S10APT
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.