
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X295S10CHT 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.
LRM12L1X295S10CHT is a complete AirTAC LRM miniature linear guide: a 295 mm stainless-steel rail, 12 mm wide, carrying one long (L) recirculating-ball carriage, built with medium preload (C) and high accuracy (H). The trailing T in the code means the rail is drilled for bottom mounting, so the fixing screws are reached from underneath your baseplate - the top face stays clean and unbroken. Rail and carriage arrive as one matched, pre-greased assembly, ready to bolt down.
Preload C is the stiffest grade offered on LRM: it removes play under reversing loads, but it raises sliding friction and punishes mounting surfaces that are not flat, so grind or finish-mill the seats before fitting. The recirculating balls are ISO 3290 G10 grade, Japanese made, chosen for roundness and wear; a double-lip seal scrapes oil back and keeps dust out, and the outer cover shields the seal strip and hides the screw heads. Ball retention helps during handling, yet the maker is clear that presenting the carriage at an angle or swapping it hastily can still drop balls. Keep ambient temperature at or below 80 C, with transient peaks no higher than 100 C. LRM carries no published load or moment ratings, so send us the RFQ and we will confirm the figures for this exact model before you commit.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X295S10CHT |
|---|---|
| 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 | Long 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. |
| L | Long 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.
A bottom-mounted 12 mm rail leaves the optical bench top unbroken, and the long carriage resists pitch when a laser head sits off the travel line.
Medium preload takes up the play that would smear a bead of resin on direction reversal, while high accuracy holds the needle path repeatably.
Light plastic consumables suit a miniature guide, and the pre-greased long carriage keeps the tip array level across its 295 mm of travel.
The long carriage is the sensible pick when the load sits above or beside the travel line: it spreads the force over more balls and lengthens the bearing span, which helps anything with a tipping tendency. That said, do not size this set on geometry alone. If the load is substantial or cantilevered, step up to LSH, which publishes per-carriage dynamic, static and moment ratings you can plug straight into a calculation - LRM publishes none of these. If the travel is short and the job demands crossed-roller rigidity, look across at LGC instead.
Before ordering, tick the checklist: form (complete set), rail width 12 mm, long carriage, one block per rail, 295 mm rail length, preload C with its friction-versus-play trade-off, accuracy H, bottom-mount rail direction - and confirm the load rating with us first. A bottom-mount rail also means you cannot see the screws after installation, so plan the access route at design time.
Quick checklist
This is a complete set: 12 mm rail width, 295 mm rail length, one long carriage, preload C (medium), accuracy H (high), bottom-mount rail. Fastening torque is 196 N.cm for M3 screws into steel, 127 N.cm into cast iron and 98 N.cm into aluminium; for M2 screws it is 58.8, 39.2 and 29.4 N.cm respectively. Ambient temperature must not exceed 80 C, with peaks no higher than 100 C. Re-grease every 100 km of travel or every 3 to 6 months. Basic dynamic load, static load and moment ratings are not published for LRM - we confirm them for this specific model when you send the RFQ.
Choose LRM when the envelope is tight and the duty is light: this set is 12 mm wide with a 295 mm rail and no published ratings to size against. Choose LSH when the load is heavy or overhung - LSH publishes per-carriage dynamic, static and moment ratings that let you run a real calculation. If your need is short travel with crossed-roller rigidity, LGC is the closer match. Tell us the load, orientation and stroke in the RFQ and we will point you to the right series.
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.