Airtac LRM Miniature Linear Guide LRM12N1X240S7.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X240S7.5AH 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 length240 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 LRM12N1X240S7.5AH
The LRM12N1X240S7.5AH is a full miniature linear guide set built around a 240 mm stainless-steel rail, 12 mm wide, with one standard recirculating-ball carriage. Its S7.5 end-hole offset sets the first mounting holes just 7.5 mm from the rail end - the closest of the common offsets - which shortens the unusable dead length at each end of the stroke and frees more travel from a given envelope.
Preload code A leaves the ball circuit unloaded, so the carriage moves with the lightest drag and any slop stays minimal at the light duties a 12 mm miniature guide is meant for. The recirculating balls are ISO 3290 G10 Japanese balls; a double-lip seal scrapes oil back and excludes dust, while an outer cover hides the screws and shields the seal strip. Ambient temperature must stay at or below 80 C, peaking no higher than 100 C. No load or moment figure is published for LRM - we will confirm the rating for this model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X240S7.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X240S7.5AH |
|---|---|
| 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 | 240 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 LRM12N1X240S7.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X240 | 1 carriage on a 240 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, 240 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 LRM12N1X240S7.5AH Is Used
Measuring fixture slide
A bench measuring fixture that carries a dial-indicator stand across machined parts, where the high accuracy grade supports repeatable readings.
Micro-dispensing table
A small adhesive micro-dispensing table in an electronics prototyping cell, sliding a nozzle with light, consistent drag over the board.
Laser marking slide
A compact laser marking slide that repositions a workpiece holder between jobs at a quick, hand-set pace.
Is the Airtac LRM Miniature Linear Guide LRM12N1X240S7.5AH the Right Guide?
If tipping or a cantilevered part is in the picture, a long-carriage version of this same set costs nothing in availability here - long carriages are stocked about as deeply as standard ones - and spreads the load over more balls. For genuinely substantial or overhung loads, move up to LSH, whose published per-carriage dynamic, static and moment ratings allow real calculation; LRM has no published table. Short travel demanding crossed-roller stiffness points to LGC instead.
Run through the match list: complete set, 12 mm rail width, standard carriage length, one carriage, 240 mm rail, 7.5 mm end-hole offset, no preload (light sliding, less rigidity), high accuracy, top-mount rail, and a confirmed load rating from us before commitment.
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 LRM12N1X240S7.5AH FAQ
Rail width 12 mm; rail length 240 mm; one standard-length carriage; preload A (none); accuracy H (high); top-mount rail; end-hole offset 7.5 mm. Screws: M2 at 58.8 N.cm into steel (39.2 cast iron, 29.4 aluminium), M3 at 196 N.cm (127, 98). The carriage arrives filled with Kyodo Yushi PS No. 2; re-grease every 100 km of travel or 3 to 6 months. Ambient temperature limit is 80 C, with 100 C transients. Load and moment ratings are not published for LRM - we confirm them for this specific model before you order.
LSH is the larger series and publishes per-carriage dynamic, static and moment ratings, so you can calculate a margin against a known load. LRM - this guide - publishes none of those figures, which is why we confirm the rating per model instead of quoting a table. Choose LRM when the priority is a miniature 12 mm envelope with smooth, accurate motion at light duty; choose LSH when the load is real and must be verified. If the travel is short but stiffness is critical, LGC's crossed rollers are the third option.
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 LRM12N1X240S7.5AH
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.