Airtac LRM Miniature Linear Guide LRM12N1X90S7.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X90S7.5AH 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 length90 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 LRM12N1X90S7.5AH
The LRM12N1X90S7.5AH is a complete miniature linear guide from the AirTAC LRM range: one 90 mm stainless-steel rail, 12 mm wide, with a single standard-length recirculating-ball carriage pre-mounted, running preload-free (grade A) at high accuracy (H), fixed from the top. Its signature dimension is the 7.5 mm end-hole offset, which pulls the end fixing screws close to the rail ends.
That short offset matters where a shoulder or wall on the mounting plate nearly reaches the end of the rail: the last screw still lands on solid metal instead of overhanging the edge. The carriage runs ISO 3290 G10 Japanese balls - a grade for the balls alone - behind double-lip seals with an outer cover over the screws. Handle with care: never strike or drop the rail, because accuracy and life can suffer with no visible damage, and hold the carriage on an inclined mount so it cannot slide off under its own weight. Ambient temperature is limited to 80 C, transient peaks 100 C - a real constraint next to a heater or a laser head. Load and moment ratings are not published for LRM; confirm the figures for this model with us before ordering via the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X90S7.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X90S7.5AH |
|---|---|
| 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 | 90 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 LRM12N1X90S7.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X90 | 1 carriage on a 90 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, 90 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 LRM12N1X90S7.5AH Is Used
Wire bonder feed slide
In lab-scale wire bonding, a slide that presents the terminal under the bond head uses the 7.5 mm end offset to tuck the rail tight against a fixture shoulder.
Automatic screwdriving micro-slide
A benchtop screw-driving cell advances a micro screwdriver spindle to the fastener on the 90 mm rail, where the zero-preload carriage keeps drive friction off the clutch setting.
Tool presetting gauge
A tool-presetting station in a small machine shop slides a cutter under an optical comparator on the 12 mm rail, with accuracy grade H supporting consistent edge readings.
Is the Airtac LRM Miniature Linear Guide LRM12N1X90S7.5AH the Right Guide?
Start from the load case. If the load is heavy, offset or cantilevered, the LSH series is the right tool: it publishes dynamic, static and moment ratings per carriage that you can plug into a life calculation, which LRM does not. If the travel is short and the priority is crossed-roller rigidity, look at LGC. Then check this set against: form (complete set), 12 mm rail width, standard carriage length, one carriage, 90 mm rail length, preload A (none), accuracy H, top-mount rail fixing, and the 7.5 mm end offset against your plate layout. Confirm the load rating with us for this exact model before you commit - we will return the figure for the specific code.
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 LRM12N1X90S7.5AH FAQ
One 90 mm stainless rail, 12 mm wide, a single standard-length carriage, no preload (A), high accuracy (H), top-mount fixing, and end mounting holes 7.5 mm from the rail ends. Screw torques: M2 - 58.8 N.cm into steel, 39.2 cast iron, 29.4 aluminium; M3 - 196, 127 and 98 N.cm. Ambient limit 80 C, transient peaks 100 C. Re-lubricate every 100 km of travel or every 3-6 months. Dynamic, static and moment ratings are not published for the LRM series; we confirm them for this exact model before ordering.
No, and the difference matters. LSH is a larger series that publishes basic dynamic, static and moment ratings per carriage, so you can size it against a calculated load. LRM - this part - publishes none of those figures; it is chosen for a miniature 12 mm envelope, smooth light-duty travel and high accuracy H, with its capacity confirmed per model by us. If your load, moment or cantilever length is at all uncertain, send the application details with the RFQ and we will either confirm this LRM code or quote the LSH equivalent that carries 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 LRM12N1X90S7.5AH
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.