
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X470S10CP 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.
LRM12L2X470S10CP is the precision-grade version of AirTAC's 12 mm miniature guide family: a 470 mm stainless rail, 12 mm wide, with two long carriages and medium preload, machined to the P accuracy grade. The set ships complete - rail and carriages delivered as one greased, sealed assembly - with mounting holes offset 10 mm from each rail end.
Precision P grading earns its keep when a gauge, sensor mount or optical carrier must hold position without post-build adjustment. Two long carriages widen the bearing span and help the assembly resist pitching, while the double-lip seal and outer cover keep swarf and fine debris out of the raceways. The recirculating balls are ISO 3290 G10 grade from Japan - a claim about the balls only, never an accuracy class for the guide. Ball retention stops the balls spilling during normal handling, but fitting a carriage at an angle or swapping it in haste can still drop them, so keep a dummy rail for field changes; carriage-only replacements are listed only sparsely, so most spares are a special order. The ambient limit is 80 C. Load and moment figures do not appear in the LRM catalogue; ask us and we will confirm them for this model before you commit.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X470S10CP |
|---|---|
| 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 | 470 mm |
| 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. |
| 2X470 | 2 carriages on a 470 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, 470 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 precision-grade pair of long carriages carries a dial or probe along a 470 mm stroke where runout would corrupt the reading.
Two P-grade blocks on one 12 mm stainless rail form the sliding axis of a compact optical test rig built on a breadboard.
Precision motion over a medium stroke suits the feed axis of a benchtop wire-bond or die-attach station in electronics assembly.
Choose P over H when the downstream process - a measuring fixture, an optics carrier, a probe mount - cannot tolerate re-shimming after installation. If the loads you need to verify are substantial or overhung, LSH is the better engineering pick: it publishes dynamic, static and moment ratings per carriage that drop straight into a sizing calculation, something LRM never states. Short travels that prize crossed-roller stiffness belong on LGC instead. Work through the match list - complete set, 12 mm rail width, long carriage, two blocks, 470 mm rail, preload C with its trade-off of stiffness against drag, precision P, top-mount direction - and confirm the load rating with us before ordering. A further practical point: 12 mm is by far the most widely supported size on this range, so a design laid out around an LRM12 rail is the easiest configuration to source.
Quick checklist
Rail width is 12 mm, rail length 470 mm, with two long carriages, preload C (medium), accuracy P (precision) and top-mount rail direction. M3 screws torque to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium; M2 screws take 58.8, 39.2 and 29.4 N.cm respectively. Keep ambient temperature at or below 80 C, with only brief excursions to 100 C, and re-grease every 100 km of travel or every 3 to 6 months. No dynamic, static or moment load ratings are published for LRM - we confirm each figure for this exact SKU on request.
Choose LRM12 when envelope size, smoothness and precision matter more than raw capacity - this 470 mm, 12 mm rail with two long, preloaded carriages is a light-duty precision positioning part. Choose LSH when you must verify capacity against a datasheet: LSH publishes basic dynamic, static and moment ratings per carriage, while LRM publishes none, so any LRM design ends with us confirming figures for your specific model. Keep LGC in mind where travel is short and crossed-roller rigidity is the priority.
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.