
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X995S10AP 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 LRM12N2X995S10AP is the precision-grade version of our longest stocked size 12 guide: a complete package of one 12 mm wide stainless-steel rail, 995 mm long, with two standard carriages riding it and no preload. The P in the code marks accuracy grade P (precision), the tighter of the two grades the LRM series offers, and the rail fixes from the top through its mounting holes.
Each carriage holds recirculating balls graded ISO 3290 G10 - the grade applies to the balls alone, not to the guide assembly - held by a ball-retention design that keeps them captive during handling. A double-lip seal manages oil scraping and dust exclusion, and the outer cover protects the seal strip from larger particles. Keep ambient temperature at or below 80 C, peaking no higher than 100 C. Because accuracy P is chosen for measuring and optical work, one handling note matters: the ball retainer helps but does not make the carriage immune to mishandling, and fitting it at an angle or swapping it hastily can still drop balls, so plan a careful installation or use a dummy rail. Load and moment ratings are not published for this series; we will confirm the per-model figures when you send an RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12N2X995S10AP |
|---|---|
| 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 | 2 |
| Rail length | 995 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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. |
| 2X995 | 2 carriages on a 995 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. |
| P | P — precision grade. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 995 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 benchtop measuring microscope traversing small stamped parts along nearly a metre gains from accuracy grade P, the tighter LRM grade, on a single-piece rail with no joint to degrade straightness.
In a back-end semiconductor fixture aligning lead frames before bonding, the precision-grade carriage pair delivers smoother, more repeatable motion than the high grade on the same 12 mm rail.
A production bench that aligns fibre-optic ferrules under a camera before assembly can traverse the optics on this two-carriage precision rail, where repeatable linearity is the whole point of the station.
When the carried mass is significant or reaches out on a lever arm, move up to AirTAC LSH - that series lists per-carriage dynamic, static and moment ratings, giving you numbers to calculate with, which LRM withholds. For short travels where crossed-roller stiffness matters more than stroke, LGC is the alternative to weigh. Check each parameter before ordering: the form is a complete set with rail, 12 mm rail width, standard carriage length, a count of two carriages, 995 mm rail, preload A (simplest assembly but the least rigid), accuracy P and top-mount fixing. Since a near-identical SKU in our stock differs only by this accuracy letter, double-check you want P, and confirm the load rating with us per model.
Quick checklist
Rail width 12 mm; rail length 995 mm; two standard carriages; preload A (none); accuracy P (precision); top-mount rail. Re-grease at every 100 km of travel or every 3 to 6 months, whichever comes first - on a 200 mm stroke cycling once per second, 100 km passes in roughly three weeks of continuous running, so the distance binds before the calendar does. Carriages arrive pre-filled with Kyodo Yushi PS No. 2 grease, and M3 screw torque is 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Note that dynamic, static and moment load ratings are not published for LRM; we confirm them per model before your order ships.
The LRM12N2X995S10AP is a complete set, so the 995 mm stainless rail and both carriages ship together, pre-assembled and greased, with no separate purchase needed. What the box does not contain is a published load table: AirTAC lists no dynamic, static or moment ratings for the LRM series, and no maximum speed or running-parallelism figure either. We confirm the load capacity for this specific model with you before ordering - include the duty cycle in your RFQ.
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.