
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X295S10CPT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriages. 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.
The trailing T in LRM12L2X295S10CPT marks a bottom-mount rail: the fixing holes sit in the rail's base so the guide bolts on from beneath, which suits frames where the screw heads are unreachable from above - a sealed machine base or a slotted table being typical cases. The set pairs a 12 mm wide stainless-steel rail, 295 mm long, with two long recirculating-ball carriages and a 10 mm end-hole offset.
Medium preload C is the rigid, less forgiving choice on this series: it takes up clearance firmly for a defined, no-play feel, but it demands a properly prepared seat - ground or finish-milled surfaces - and tolerates misalignment less readily than a lighter grade. The recirculating balls are Japanese-made to ISO 3290 G10 for roundness and wear, a double-lip seal scrapes grease and excludes dust, and an outer cover keeps the seal strip clear of larger debris. Keep ambient temperature at or below 80 C, peaks to 100 C. AirTAC publishes no load or moment figures for LRM; tell us the load case on the RFQ and we confirm the ratings for this configuration.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X295S10CPT |
|---|---|
| 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 | 2 |
| Rail length | 295 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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. |
| 2X295 | 2 carriages 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. |
| P | P — precision grade. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 295 mm |
| Carriage | Yes, 2 |
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 carrier sliding along a bench-mounted optics rail gains from medium preload C removing play, keeping a lens or mirror steady between adjustments.
A compact pick-and-place head on a 295 mm axis keeps its grip path predictable when two long carriages hold the bracket square to the rail.
Inside a benchtop electronics assembly cell, the bottom-mount rail disappears into the frame, leaving the working surface clear for fixtures and parts.
Two long carriages sharing one rail resist tipping along the direction of travel better than a single block, and specifying the long body costs nothing in availability here - long carriages are held as deeply as standard ones (512 against 475 across the stocked range). If the load is heavy, offset or cantilevered, move up to LSH: its catalogue lists per-carriage dynamic, static and moment ratings, the numbers LRM deliberately omits. For short, rigid strokes where crossed rollers outperform balls, LGC is the cross-series alternative. Confirm the whole spec before committing: complete set with two long blocks, 12 mm rail, 295 mm length, medium preload C, precision P accuracy, bottom-mount fixing, plus the load rating - which we verify per model when you enquire.
Quick checklist
The published facts: 12 mm rail width, 295 mm rail length, two long carriages, 10 mm end-hole offset, preload C (medium), accuracy P (precision), bottom-mount rail. Screw torques per the catalogue are 58.8 N.cm into steel for M2 (39.2 cast iron, 29.4 aluminium) and 196 N.cm into steel for M3 (127 cast iron, 98 aluminium). The ambient limit is 80 C with transient peaks to 100 C; re-grease with Kyodo Yushi PS No. 2 every 100 km of travel or every 3 to 6 months. Basic dynamic, static and moment ratings are not published for LRM - we confirm them for this exact model on request.
Choose LRM when the envelope is tight and the duty is light-precision: a 12 mm rail, long carriages and precision P accuracy at a fraction of the cross-section of LSH. Choose LSH when the load is substantial or hangs on a cantilever, because LSH publishes per-carriage dynamic, static and moment ratings you can plug into a calculation, while LRM leaves those to be confirmed per model. If the travel is short and rigidity under vibration matters more than stroke, crossed-roller LGC is the third option to weigh. Send us the load case either way and we will verify the numbers.
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.