Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AP 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 length75 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 LRM12N1X75S12.5AP
Order the LRM12N1X75S12.5AP when the axis has to hold a tight tolerance as well as move smoothly. This complete set pairs a 75 mm, 12 mm wide stainless-steel rail with a single standard-length ball carriage, built to precision grade P rather than the high grade H of the sister part number. The carriage ships mounted on the rail, pre-greased and ready to fix down.
Grade P is the choice for measuring and inspection work where running deviation along the travel would show up in the reading, while grade H remains the pragmatic pick for general automation. Inside the carriage, Japanese-made ISO 3290 G10 balls - the grade covers the balls only - run in a recirculating circuit guarded by a double-lip seal, and an outer cover shields the seal strip and screw heads from larger debris. Ambient temperature must not exceed 80 C, with transient peaks up to 100 C. As with every LRM part, load and moment ratings are confirmed per model rather than published, so send the RFQ and we will verify the figures for this configuration.
Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AP |
|---|---|
| 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 | 75 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 LRM12N1X75S12.5AP
| 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. |
| P | P — precision 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 LRM12N1X75S12.5AP Is Used
Measuring microscope stage
Positions small workpieces under a measuring microscope, where precision grade P keeps stage running deviation out of the measurement.
Semiconductor tray indexing
Steps a JEDEC tray or small component carrier between inspection stations with the smooth, repeatable motion a precision-grade miniature guide provides.
Gauge and probe fixture
Moves a dial indicator or contact probe along a part on a checking fixture, relying on grade P travel so the reading reflects the part, not the slide.
Is the Airtac LRM Miniature Linear Guide LRM12N1X75S12.5AP the Right Guide?
If the load is heavy or overhung, move to LSH, which publishes per-carriage dynamic, static and moment ratings you can calculate against - a step LRM cannot support because its ratings are absent from the catalogue. For short travel demanding crossed-roller stiffness, look at LGC instead. Match checklist: set or carriage-only form, rail width, carriage length, carriage count, rail length, preload grade and whether your assembly can absorb its installation demands, accuracy grade, mounting direction, pairing code for replacements, plus confirmation of the load rating with us before you commit.
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 LRM12N1X75S12.5AP FAQ
Rail: 12 mm wide, 75 mm long, stainless steel, top-mount. Carriage: one, standard length. Preload: A (none). Accuracy: P (precision). M3 screws call for 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium; M2 screws take 58.8, 39.2 and 29.4 N.cm respectively. The ambient limit is 80 C (100 C transient) and re-greasing is due every 100 km of travel or every 3 to 6 months. Dynamic, static and moment ratings are not published for LRM - we confirm them per model when you enquire.
Possibly, but treat it carefully. The ball-retention design helps, yet the manufacturer warns that inserting the carriage at an angle, or fitting and removing it quickly, can still drop balls; a dummy rail makes safe carriage swaps far easier. Remember also that only a handful of carriage-only LRM SKUs are stocked, so a replacement carriage is usually a special order - keep the original carriage on its rail unless a swap is genuinely necessary.
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 LRM12N1X75S12.5AP
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.