Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AH 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 length75 mm
- AccuracyH — high 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 LRM12N1X75S12.5AH
This LRM12N1X75S12.5AH is a complete miniature linear guide from AirTAC's LRM series: a 12 mm wide stainless-steel rail cut to 75 mm, carrying one standard-length recirculating-ball carriage. The S12.5 in the code sets the distance from the rail end to the first mounting hole, so you can check your base-plate drilling before you order. The set arrives pre-filled with Kyodo Yushi PS No. 2 grease and bolts down through its top face.
The carriage rides on Japanese ISO 3290 G10 balls - a grade covering the balls alone, not the assembly - kept captive by the ball-retention design, and sealed by a double-lip wiper under an outer cover that hides the fixing screws. One figure worth designing around: ambient temperature is limited to 80 C with peaks to 100 C, which rules out mounting right beside a heating element or a hot lamp. Also note that the 100 km re-grease interval arrives sooner than it sounds - a short stroke cycling continuously can cover the distance in a matter of weeks - so plan grease access from the start. Load and moment ratings are not published for LRM; tell us the model and we confirm the figure through an RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AH |
|---|---|
| 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 | 75 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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 LRM12N1X75S12.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X75 | 1 carriage on a 75 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 75 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 LRM12N1X75S12.5AH Is Used
Micro dispensing valve slide
A precision dispenser head traversing over a PCB test panel in short, repeatable moves; the no-preload carriage keeps breakaway friction low for a small stepper or cam drive.
Probe card inspection jig
A semiconductor laboratory fixture holding a probe card under a stereo microscope and adjusting along one axis; the 75 mm rail suits a benchtop envelope.
Solder-joint camera carriage
A compact inspection camera gliding along a row of solder joints on an AOI bench rig, where the 12 mm rail width keeps the optics close to the board.
Is the Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AH the Right Guide?
Start with the numbers that decide fit: 12 mm rail width, 75 mm rail length, one standard carriage, no preload (grade A - the smoothest-running and most forgiving choice, at the cost of some play under reversing loads), H high accuracy and top-mount screw fixing. If your plate is already drilled, verify the S12.5 end offset against the hole pattern. When the slide carries real weight or a cantilever, move up to AirTAC LSH, whose catalogue lists dynamic, static and moment ratings per carriage - the published numbers LRM lacks, and which you need to size anything beyond light duty. For short travel demanding crossed-roller stiffness, LGC is the alternative. Send us the load case and we will confirm whether this LRM12 model carries it.
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 LRM12N1X75S12.5AH FAQ
A 12 mm wide, 75 mm long stainless rail with a single standard-length carriage, preload grade A (none), accuracy grade H (high), top-mount fixing and a 12.5 mm end-hole offset. Fix with M3 screws at 196 N.cm into steel, 127 N.cm into cast iron or 98 N.cm into aluminium. Keep ambient temperature at or below 80 C (100 C peaks) and re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for the LRM series; we confirm them per model when you enquire.
A complete, matched unit: one 75 mm stainless-steel LRM12 rail with one standard carriage already fitted, pre-greased and sealed. Nothing is missing and no separate matching is needed - unlike a carriage-only LRM12BK code, which supplies a block alone and must carry the pairing letter of an existing rail. If you later want spare blocks, be aware that only a handful of carriage-only LRM SKUs are stocked, so most replacements are ordered specially.
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 LRM12N1X75S12.5AH
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.