
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X295S10CHT 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.
Specify LRM12N1X295S10CHT when the rail has to be fixed from underneath: the trailing T code means the fixing holes are arranged for screws driven up through the base, leaving the rail top completely clear for tooling, covers or product. This is a complete set - one 295 mm stainless-steel rail, 12 mm wide, with end holes 10 mm in from each end, and a single standard-length recirculating-ball carriage shipped pre-greased on it.
Medium preload (code C) removes play under reversing motion, and on a bottom-mounted rail it pays to get the seating right before tightening: the catalogue requires a ground or finish-milled mounting face, and either side of the rail can serve as the datum. The balls recirculating in the carriage are Japanese-made ISO 3290 G10 grade; a double-lip seal holds the Kyodo Yushi PS No. 2 factory grease in place, and the outer cover keeps chips off the seal strip. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. LRM has no published load or moment ratings, so confirm the figures for this model with us before you commit the design.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X295S10CHT |
|---|---|
| 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 | 295 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | C — medium 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. |
| 1X295 | 1 carriage on a 295 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium 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, 295 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.
Feeding component bodies into a small lead-forming die on a bench press, with the bottom-mounted rail leaving the die area unobstructed from above.
Replacing worn slides in a rebuilt small height gauge or measuring stop, where a stiff medium-preloaded carriage restores repeatable indication.
A shuttle stepping vials between lanes on a compact pharmaceutical sorting bench, cycling continuously between grease intervals.
If the load is heavy or hangs off a lever arm, move up to LSH, whose published per-carriage dynamic, static and moment ratings make sizing possible - something LRM cannot offer. If travel is short and stiffness is everything, look at LGC's crossed-roller guides. For this SKU, verify: form (complete set), rail width 12 mm, standard carriage length, one carriage, 295 mm rail, preload C, accuracy H, bottom-mount fixing, and a confirmed load rating from us before the design is frozen. Maintenance is worth planning too: re-greasing every 100 km sounds generous, but a 200 mm stroke cycling once per second covers that distance in roughly three weeks of continuous running, so the distance binds well before the calendar's 3 to 6 months.
Quick checklist
The configuration: 12 mm rail width, 295 mm rail length, end holes 10 mm from each end, a single standard-length carriage, medium preload (C), high accuracy (H) and bottom-mount fixing. Torques are 58.8 N.cm for M2 screws into steel (39.2 cast iron, 29.4 aluminium) and 196 N.cm for M3 into steel (127 cast iron, 98 aluminium). The environment must stay at or below 80 C with peaks no higher than 100 C, and grease is renewed every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM, so ask us and we confirm them for this exact model.
You get one complete assembly: a 295 mm stainless rail plus one standard carriage, pre-greased and ready to mount. The trailing T changes the mounting, not the contents - the fixing holes are arranged for screws coming up through the base, so nothing protrudes above the rail. Not supplied: mounting screws and grease for topping up. LRM carriages share one rail profile, so a long carriage would also fit this rail if you ever re-spec; spare carriages alone are a special order for us, as our carriage-only stock is very small.
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.