Airtac LRM Miniature Linear Guide LRM12L1X345S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X345S10APT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- 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 LRM12L1X345S10APT
LRM12L1X345S10APT is a complete miniature guide built around one 12 mm stainless-steel rail, 345 mm in length, with a single long carriage already fitted and charged with Kyodo Yushi PS No. 2 grease. The trailing T in the code selects a bottom-mount rail: the fixing holes are arranged so the screws are driven from underneath, which suits frames and tables whose top face is covered by a workplate or shroud. Preload is A (none) and the accuracy grade is P.
Grade P is the tighter of the two LRM accuracy grades, and with no preload the carriage glides with the least drag - a combination aimed at metrology-style work rather than stiff power transmission. Balls are graded ISO 3290 G10, a rating that applies to the balls alone; the double-lip seal and outer cover protect the raceway line. Keep ambient temperature at or below 80 C, with brief peaks to 100 C. One handling caution: ball retention helps during normal handling, but fitting the carriage at an angle or swapping it quickly can still drop balls, so keep a dummy rail for carriage changes. Load and moment ratings are not published; ask us and we will confirm the figure for this model.
Airtac LRM Miniature Linear Guide LRM12L1X345S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X345S10APT |
|---|---|
| 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 | 1 |
| 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 LRM12L1X345S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X345 | 1 carriage 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, 1 |
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 LRM12L1X345S10APT Is Used
Microscope bridge stage
A bottom-mount rail hides the fixings beneath a granite or steel bridge, letting an inspection microscope traverse a 345 mm line without visible screw heads in the optical path.
PCB metrology sensor gantry
Grade P accuracy supports a camera or laser sensor that must revisit the same coordinates on populated circuit boards, with no preload drag on the drive mechanism.
Wire and tube scan bench
A long, free-running carriage glides by hand along extruded wire or thin tube on a QA bench, the unloaded travel making a hand-positioned scan head feel weightless.
Is the Airtac LRM Miniature Linear Guide LRM12L1X345S10APT the Right Guide?
Because LRM publishes no load ratings, a genuinely heavy or overhung duty belongs on AirTAC LSH, whose catalogue lists per-carriage dynamic, static and moment ratings you can calculate against. For short travels where crossed-roller rigidity matters more than stroke length, LGC is the natural cross-over. Matching this SKU: complete set form; 12 mm rail width; long carriage; one carriage; 345 mm rail length; preload A, meaning no built-in play removal so any clearance is felt at the load; accuracy P; bottom-mount direction; and, if you are matching a spare to an existing rail, the pairing letter must agree. Where you would expect a load figure, we confirm it per model through the RFQ. Worth knowing as well: across the LRM range the price spread comes almost entirely from rail length and carriage count rather than rail width, so trimming travel trims cost.
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 LRM12L1X345S10APT FAQ
The set is a 12 mm wide, 345 mm long stainless rail with one long carriage, bottom-mounted, 10 mm end offset, no preload and precision grade P. Torque M2 screws to 58.8 N.cm and M3 screws to 196 N.cm when fixing into steel; softer materials take lower values. The ambient limit is 80 C with transient peaks to 100 C, and lubrication should be refreshed every 100 km of travel or every 3 to 6 months, using a top-up anywhere in the 0.02/0.01 to 1.0/0.50 cm3 range given per model. Dynamic load, static load, moment and running-parallelism ratings are not published for LRM; we confirm them for the specific model before you order.
Choose LRM when the envelope is tight and the duty is light - this 12 mm set with a long, free-running precision carriage is made for that job. Step up to LSH when the load is substantial or overhung, because LSH publishes dynamic, static and moment ratings per carriage that you can size against, something LRM does not offer. If the travel is short and the priority is crossed-roller rigidity, compare LGC. Send us the load sketch through the RFQ and we will confirm the right series and the load rating for it.
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 LRM12L1X345S10APT
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.