Airtac LRM Miniature Linear Guide LRM12N1X125S12.5AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X125S12.5AP 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 lengthStandard carriage
- Carriages1
- Rail length125 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 LRM12N1X125S12.5AP
This LRM12N1X125S12.5AP set pairs a 12 mm stainless rail, 125 mm long, with one standard-length carriage in the P precision accuracy grade. It is a complete, ready-to-bolt assembly - a matched rail and block, not a carriage sold on its own.
Precision grade tightens the geometry between rail and carriage, which matters when a measurement or exposure has to land in the same place every cycle. The carriage runs on ISO 3290 G10 balls (a grade for the balls alone; the guide itself carries no accuracy standard claim), kept clean by a double-lip seal with an outer cover hiding the screws. Keep ambient temperature at or below 80 C, peaks to 100 C. Because AirTAC publishes no load or moment ratings for LRM, we verify them for this code before you order - just ask through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X125S12.5AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X125S12.5AP |
|---|---|
| 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 | 1 |
| Rail length | 125 mm |
| 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 LRM12N1X125S12.5AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X125 | 1 carriage on a 125 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, 125 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 LRM12N1X125S12.5AP Is Used
Comparison measuring stand
Carrying a dial-indicator or sensor bracket across a part in a shop-floor checking fixture; precision grade P supports repeatable readings at the same station.
Electronics assembly micro-stage
Positioning a test socket or probe head over PCB pads on a small production fixture, where the 125 mm rail fits a benchtop cell without eating workspace.
Optics alignment bench
Sliding a lens holder or mirror mount in a laboratory setup, where the roundness of the G10 balls (the balls alone) and the fine geometry of the P version protect pointing accuracy.
Is the Airtac LRM Miniature Linear Guide LRM12N1X125S12.5AP the Right Guide?
Start the choice from the grade: P precision buys tighter geometry between rail and carriage than H, which pays off in measuring and optical work but costs more than the H version of the same 125 mm set. If loads grow heavy or overhang, move to AirTAC LSH, whose catalogue lists dynamic, static and moment ratings per carriage - ratings LRM does not publish, so for this block they get confirmed with us per model. Where travel is short and crossed-roller stiffness is the priority, compare LGC. Checklist: complete set, 12 mm rail, standard carriage, one block, 125 mm length, preload A (free-sliding and simplest to mount), accuracy P, top-mount, plus our confirmation of the load rating before you buy.
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 LRM12N1X125S12.5AP FAQ
Published data: 12 mm stainless rail, 125 mm rail length, one standard carriage, no preload (class A), precision accuracy grade P, top-mount fixing, M3 screw torque of 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium, an 80 C ambient ceiling with 100 C transient peaks, and a re-grease interval of 100 km of travel or 3 to 6 months. Load and moment ratings are deliberately absent from the LRM catalogue; we verify them for this exact code before ordering.
Yes. This code is a complete set - one 12 mm, 125 mm long stainless rail with a single precision-grade standard carriage already assembled on it, so nothing else is needed to bolt it down. It is not a carriage-only part: those carry BK in the code plus a pairing letter, and our carriage-only stock is very thin. Note that the ball-retention design helps but does not guarantee balls stay in if the block is tilted onto a rail or swapped hastily, so handle the fitted carriage and rail as one unit.
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 LRM12N1X125S12.5AP
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.