Airtac LRM Miniature Linear Guide LRM12L2X345S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X345S10APT 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 length345 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 LRM12L2X345S10APT
LRM12L2X345S10APT is a full miniature guide set built around a 345 mm stainless-steel rail, 12 mm wide, with two long carriages. The trailing T in the code makes this a bottom-mount rail: the fixing holes are designed for access from below, so the screw heads sit hidden under the rail and you can fit it to a surface you cannot reach from above. Rail, preload and accuracy all ride in one part number.
Preload A means the carriages run with no built-in preload - the freest-running, lowest-friction choice on the LRM range, well suited to a light load that must move with minimal effort, though it gives up rigidity against the B and C grades. Accuracy P keeps travel straight for precision work. Inside each carriage, Japanese-made balls graded ISO 3290 G10 (the balls alone, not the guide) circulate behind a double-lip seal, with an outer cover keeping debris off the seal strip. Handle with care: the ball retainer helps, but an angled insertion or a fast swap can still drop balls, and the maker warns that striking the rail can cost accuracy even with no visible damage. The 80 C ambient limit (100 C momentary) is one of the few published figures for this series. There is no published load or moment rating for LRM - we confirm that per model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X345S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X345S10APT |
|---|---|
| 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 | 345 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 LRM12L2X345S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X345 | 2 carriages on a 345 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, 345 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 LRM12L2X345S10APT Is Used
PCB test-fixture shuttle
Bottom-mount fixing hides the screws below the rail deck, leaving the top face clear for probe pins and pogo towers on a printed-circuit test rig.
Inkjet print-head carriage
A carriage riding under a platen in a small coding printer: the rail fixes from beneath, preload-free running takes minimal effort, and P accuracy holds the nozzle line.
Under-conveyor vision camera rail
A 345 mm rail carrying a camera beneath a light product conveyor - the bottom-mount holes keep the top of the rail flush and clear of falling debris.
Is the Airtac LRM Miniature Linear Guide LRM12L2X345S10APT the Right Guide?
Cross-check the family before ordering. A heavy or overhung load belongs on LSH, where dynamic, static and moment ratings are published per carriage and you can size with real numbers; LRM offers no such table, so its ratings must be confirmed case by case. Short travel demanding crossed-roller rigidity points to LGC instead. With LRM confirmed as the right family, verify each element of the code: this is a complete set with two long carriages on a 345 mm rail of 12 mm width, preload A for freest running, accuracy P, and bottom-mount fixing. Confirm the load rating with us as the final step - it is the one figure the catalogue will not give you.
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 LRM12L2X345S10APT FAQ
Yes - the part number covers the 345 mm stainless-steel rail, 12 mm wide, with both long carriages fitted. A carriage-only code would carry the BK marker and a pairing letter instead of rail length and preload; this code has neither. Only a few carriage-only SKUs exist in our range, so most replacement carriages are a special order matched to your rail's pairing letter - buying the full set up front avoids that.
LSH publishes per-carriage dynamic, static and moment ratings, so it is the series to step up to when the load grows or hangs off a cantilever. This LRM set answers a different brief: a 12 mm, bottom-mount rail in a compact machine where freest-running travel and hidden fixings matter more than a rating table. LRM ratings are not published, so we confirm them per model via the 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 LRM12L2X345S10APT
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.