
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X80S15AH 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.
Ordering the LRM12N1X80S15AH gets you a complete AirTAC LRM miniature guide: a 12 mm wide stainless-steel rail 80 mm long, one standard-length recirculating-ball carriage seated on it and pre-filled with Kyodo Yushi PS No. 2, plus the double-lip seals and outer cover that keep dust away from the raceways. The 80 mm rail length leaves room for several fixing screws along the base while keeping the whole axis inside a small fixture footprint.
Among LRM sizes, 12 mm is the heart of the range - the overwhelming majority of stocked LRM sets are this width - so a layout built around a 12 mm rail has the widest choice of lengths, carriage styles and preload grades. The carriage runs on Japanese ISO 3290 G10 balls (a grade for the balls alone, not a standard the guide is built to), retained captive for handling, and the assembly is rated for ambient temperatures up to 80 C with transient peaks of 100 C. Because AirTAC publishes no load or moment figures for LRM, capacity is confirmed model by model: send the RFQ and we will return the rating for this exact part.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X80S15AH |
|---|---|
| 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 | 80 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X80 | 1 carriage on a 80 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 80 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.
A fiber-to-lens coupler trimmed along one axis on a photonics bench; the plain no-preload carriage turns smoothly for fine hand adjustment of coupling efficiency.
A workshop rebuild of a worn measuring-microscope stage using a compact modern guide; the outer cover keeps stage dust away from the seal lips.
An electronics factory test nest indexing small connector boards past a test head; the 12 mm rail fits inside a compact fixture body.
Decide the form first - this is a full rail-and-carriage set, so a buyer needing only a replacement block should order a carriage-only LRM12BK code carrying the pairing letter of the existing rail. Then confirm the fit: 12 mm rail width, 80 mm rail length, one standard carriage, preload A (none - easiest to move but least stiff against rocking; grades B and C trade smoothness for rigidity), accuracy H, top-mount fixing, and a 15 mm end-hole offset to check against your drilled pattern. If the load is heavy or overhung, step up to AirTAC LSH, which publishes dynamic, static and moment ratings per carriage so you can calculate margins - figures the LRM catalogue does not give. If travel is very short and you need crossed-roller stiffness, LGC is the alternative. Confirm the load rating with us before ordering, whichever way you go.
Quick checklist
12 mm rail width, 80 mm rail length, a single standard-length carriage, preload grade A (none), accuracy grade H (high), top-mount rail mounting and a 15 mm end-hole offset. Fixing screws are M3, torqued to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium. Ambient temperature is limited to 80 C, peaking at 100 C, and the grease charge needs renewing every 100 km of travel or every 3 to 6 months. AirTAC publishes no load, moment, parallelism or speed figures for LRM; we confirm the load rating for this model on enquiry.
Ask what the catalogue lets you calculate. LSH publishes dynamic, static and moment ratings for each carriage, so a loaded or cantilevered axis can be sized arithmetically; LRM publishes none of these, and its role is the small, precise, lightly loaded end of the range - a slim 12 mm rail where compactness and smooth travel matter more than capacity. If that describes your application, this LRM12 set fits and we confirm its load figure via RFQ; if not, LSH is the honest choice.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.