Airtac LRM Miniature Linear Guide LRM12N2X270S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X270S10CPT 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
- PreloadC — medium 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 LRM12N2X270S10CPT
LRM12N2X270S10CPT is a complete miniature guide set built around a 12 mm wide stainless-steel rail, 270 mm long, carrying two standard-length recirculating-ball carriages with medium preload (C) and precision P accuracy. The trailing T marks the bottom-mount rail: it bolts against the underside of a carrier plate, which solves designs that leave no access to the screw heads from above. End mounting holes sit 10 mm from each rail end.
Before drilling anything, note the surface rules: the mating face should be ground or finish-milled for the rated travel accuracy, and with two carriages on one rail the datum edge should sit on the same side for both. Handling is where the ball-retention design earns its keep - the ISO 3290 G10 balls, a grade for the balls alone, stay in the carriage during fitting - yet AirTAC still warns that an angled insertion or a hasty swap can drop a ball, so a dummy rail is worth planning if field maintenance is expected. The double-lip seal and outer cover keep swarf and dust off the raceways, ambient temperature must stay at 80 C or less with brief 100 C peaks, and since LRM has no published load table we confirm the ratings for this exact part number on request.
Airtac LRM Miniature Linear Guide LRM12N2X270S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X270S10CPT |
|---|---|
| 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 | C — medium 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 LRM12N2X270S10CPT
| 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. |
| C | C — medium 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 LRM12N2X270S10CPT Is Used
Benchtop vision inspection station
A camera glide above a PCB or machined part; the bottom-mount rail hides beneath the camera plate so nothing interrupts the image path or collects dust on the visible face.
Connector test fixture slide
Walking a probe head across a row of connectors on an electronics test rig; the two-carriage layout resists tipping along the travel as the head reaches out to the far connector.
Prototype fixture development
R&D cells that rebuild fixture plates often; with the rail fixed from below the top surface stays flat, and the common-rail profile means a standard- or long-body LRM carriage can take over the same rail later.
Is the Airtac LRM Miniature Linear Guide LRM12N2X270S10CPT the Right Guide?
Start by asking what the sizing decision really needs. A substantial or overhung load points to LSH, the series that publishes dynamic, static and moment figures per carriage and lets you verify margins on paper - something LRM cannot do, which is why we confirm LRM ratings individually. A short stroke that lives on crossed-roller rigidity belongs with LGC. Then check this code line by line: complete set with rail included, 12 mm rail width, standard carriage length, two blocks, 270 mm rail, preload C accepting a little more drag for a stiffer feel, precision P grade, bottom-mount direction, and a load rating agreed with us before the order goes in.
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 LRM12N2X270S10CPT FAQ
Published: 12 mm rail width, 270 mm rail length, 10 mm end-hole offset, two standard-length carriages, preload C, precision P accuracy and bottom-mount fixing. M3 fixing screws take 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. The guide runs to 80 C ambient, briefly 100 C, and needs fresh grease every 100 km of travel or every 3 to 6 months - on a 200 mm stroke cycling once a second, the distance lands first. Not published: load and moment ratings for the LRM series. We confirm those for this model number when you send the RFQ.
This SKU is a complete set - the 270 mm stainless-steel rail with both standard carriages fitted and pre-filled with Kyodo Yushi PS No. 2 grease. It is not a carriage-only part. Carriage-only codes carry a BK marker and a pairing letter that must match the rail, and our carriage-only stock is thin (just a handful of SKUs), so a replacement carriage is usually a special order. If you plan swaps, order the spare alongside the set rather than after it fails.
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 LRM12N2X270S10CPT
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.