Airtac LRM Miniature Linear Guide LRM12N2X270S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X270S10APT 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 LRM12N2X270S10APT
The trailing T in LRM12N2X270S10APT marks the bottom-mount variant of the LRM12 twin-carriage set. You receive one 270 mm stainless rail, 12 mm wide, drilled so fixing screws pass through its base, with two standard recirculating-ball carriages already fitted. Mounting from below leaves the rail's top face clear for a worktable or guard that must sit flush over the guide.
Accuracy grade is P - precision, and preload is A, none, keeping running resistance low. Because the rail bolts from beneath, the whole upper surface can carry the moving plate without proud screw heads. The balls inside each carriage are ISO 3290 G10 Japanese grade, a ball-only specification. Handle with care: the ball-retention design reduces but does not eliminate ball loss if a carriage is offered up at an angle or swapped hastily, so work slowly or use a dummy rail. Keep ambient temperature at or below 80 C, peaks 100 C. No load or moment rating is published for LRM; ask us and we will confirm the figures for this model before you order.
Airtac LRM Miniature Linear Guide LRM12N2X270S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X270S10APT |
|---|---|
| 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 (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 LRM12N2X270S10APT
| 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 LRM12N2X270S10APT Is Used
Electronics assembly nest
Indexing a PCB nest beneath a small solder-dispense or camera station, with the bottom-mounted rail leaving the deck surface flush and uncluttered.
Compact pick-and-place head
Carrying a lightweight suction head on a benchtop pick-and-place, where the twin-carriage layout steadies the head along the full travel.
Measuring microscope table
Traversing a small part under a shop-floor measuring microscope, with precision-grade accuracy maintained across the entire 270 mm of rail.
Is the Airtac LRM Miniature Linear Guide LRM12N2X270S10APT the Right Guide?
Work through the checklist in order: complete set or carriage only; rail width; carriage length; carriage count and rail length; preload, remembering that higher preload trades smoothness for rigidity; accuracy grade; and mounting direction, which is the defining choice here - bottom-mount suits plates you cannot drill from above. If a substantial or overhung load drives the design, move up to LSH, whose per-carriage dynamic, static and moment ratings can be sized on paper; LRM publishes none of these and we confirm capacity model by model. Short travel with a crossed-roller rigidity requirement points to LGC instead. Send us the load case and we will verify this model suits 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 LRM12N2X270S10APT FAQ
A 12 mm wide stainless rail, 270 mm long, bottom-mount fixing through the rail base, two standard carriages, preload A (none), accuracy P (precision), and a 10 mm end-hole offset. Fixing torque depends on screw size: M2 takes 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 takes 196, 127 and 98 N.cm. Keep the ambient at or below 80 C, with 100 C transients. Re-lubricate every 100 km of travel or every 3 to 6 months, with grease quantities of 0.02 to 1.0 cm3 per model. Load and moment ratings are not published for LRM; we confirm them per model via RFQ.
One complete set: a single 270 mm stainless rail, 12 mm wide, with two standard carriages already mounted, so no separate assembly is needed. The rail is drilled for bottom-mount fixing, so screws pass through its base. Carriages ship greased with Kyodo Yushi PS No. 2; wipe off the rust-preventive oil and apply lubricant before first use. Avoid pulling a carriage off the rail unnecessarily - the ball retainer helps, but angled or hasty fitting can still drop balls. There is no published load rating for LRM; request the figure for this model through an RFQ.
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 LRM12N2X270S10APT
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.