Airtac LRM Miniature Linear Guide LRM12L2X370S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X370S10APT 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 length370 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 LRM12L2X370S10APT
This complete LRM set pairs a 370 mm stainless-steel rail, 12 mm wide, with TWO long carriages mounted from below. The long body puts more recirculating balls under the load and stretches the bearing span, so a head that wants to tip as it travels gets a steadier platform than a standard carriage would give. Two carriages on one 370 mm rail also spread the support points further apart along the travel. In the box: the rail, both carriages, end-fixed for 10 mm hole offset, ready to bolt down.
Accuracy here is precision grade P, the tighter of the two grades offered on LRM, and preload is grade A, meaning the carriages run free of internal pre-tension for the lowest drag. The balls inside are ISO 3290 G10 grade Japanese balls for roundness, the double-lip seal scrapes oil and excludes dust, and an outer cover shields the seal strip and screw heads from larger debris. The ball-retention design helps during handling but does not make carriage swaps foolproof; angled insertion or a hasty pull can still drop balls, so keep a dummy rail on hand. Ambient temperature must stay at or below 80 C, with transient peaks to 100 C. AirTAC publishes no dynamic or static load ratings for LRM, so we confirm the figures for this exact model before you order - just send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X370S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X370S10APT |
|---|---|
| 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 | 370 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 LRM12L2X370S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X370 | 2 carriages on a 370 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, 370 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 LRM12L2X370S10APT Is Used
Optical inspection bench slide
A 370 mm rail carries a camera or sensor head across a microscope or vision-inspection bench, where the precision P grade keeps measured travel straight and the two long carriages stop the head from nodding.
Electronics assembly gantry axis
In a small PCB handling gantry, the bottom-mount rail bolts up under a plate where screws cannot be reached from above, and the long carriages steady a pick head that reaches out over the board.
Laser marking table carrier
On a compact laser worktable the carriage-free A preload keeps motion smooth for fine beam positioning, and the 80 C ambient ceiling keeps the guide safe beside a low-heat enclosure wall - always verify cabinet temperature first.
Is the Airtac LRM Miniature Linear Guide LRM12L2X370S10APT the Right Guide?
Two long carriages without preload make sense when smooth, free-running travel matters more than stiffness - think inspection slides and optical carriers. If your load is substantial or cantilevered out past the carriage, step up to LSH instead: that series publishes per-carriage dynamic, static and moment ratings you can actually size against, which LRM does not. If the travel is short and the job demands crossed-roller rigidity, LGC is the better fit. Before committing, tick off the checklist: set or carriage-only, 12 mm rail width, long carriage, two blocks, 370 mm rail, preload A (softer feel, more compliance under load), accuracy P, bottom-mount rail, and a confirmed load rating from us - we will pull the numbers for this specific configuration.
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 LRM12L2X370S10APT FAQ
Rail width 12 mm, rail length 370 mm, two long carriages, 10 mm end-hole offset, preload grade A (none), accuracy grade P (precision), bottom-mount rail with a trailing T in the code. The carriages ship greased with Kyodo Yushi PS No. 2; re-grease every 100 km of travel or every 3 to 6 months, whichever comes first. Ambient temperature must not exceed 80 C, with peaks to 100 C. M3 mounting screws take 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. AirTAC publishes no load, moment, running-parallelism or speed ratings for the LRM series - we confirm the figures for this exact model on request before you order.
Choose LRM when the envelope is tight and the duty is light: this 12 mm, 370 mm set is built for smooth miniature positioning. Choose LSH when the load is heavy or overhung, because LSH publishes dynamic, static and moment ratings per carriage that you can plug straight into a sizing calculation - LRM has no published ratings, which is why we confirm capacity per model. If travel is very short and you need crossed-roller stiffness, look at LGC instead. Note also that the 12 mm size is the deepest part of the LRM range by a wide margin, so alternative lengths and carriage counts in this width are the easiest to source.
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 LRM12L2X370S10APT
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.