Airtac LRM Miniature Linear Guide LRM12N2X320S10CP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X320S10CP 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.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthStandard carriage
- Carriages2
- Rail length320 mm
- AccuracyP — precision grade
- PreloadC — medium preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LRM Miniature Linear Guide LRM12N2X320S10CP
The LRM12N2X320S10CP pairs the two most demanding option letters available on a size-12 set: C for medium preload and P for precision accuracy, on a 320 mm stainless-steel rail 12 mm wide with two standard carriages, mounted from the top. It is the configuration to reach for when the axis must hold a line as well as a position - a measuring edge, an optical axis, a nozzle path. Rail and carriages arrive as one assembled, preloaded unit.
Precision grade tightens the running tolerances beyond high grade, and the factory preload removes play, so the pair behaves predictably on reversal. The rolling elements are Japanese balls to ISO 3290 G10 for roundness and wear, sealed by a double lip under an outer cover that also hides the screw row. Because LRM carriages share one rail profile within the size, a future LRM12 carriage can run on this rail. Two practical notes: in this range price tracks rail length and carriage count far more than width, so trimming travel is the cheapest way to trim cost; and ambient temperature must stay at or below 80 C, peaking briefly at 100 C. AirTAC publishes no load or moment rating for LRM - we confirm the figure for this model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X320S10CP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X320S10CP |
|---|---|
| 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 | 320 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12N2X320S10CP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X320 | 2 carriages on a 320 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 320 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.
Where the Airtac LRM Miniature Linear Guide LRM12N2X320S10CP Is Used
Autocollimator target carriage on a calibration bench
A calibration lab steps an autocollimator target along a granite surface plate on this axis; the P-grade pair keeps the target line straight over the full 320 mm, and preload C stops the saddle drifting after each reposition.
Benchtop laser-marking gantry for watch components
Marking serial numbers on tiny watch bridges needs a head that returns to the same line on every pass; a preloaded, precision-graded miniature guide keeps the spot path repeatable without a heavy machine frame around it.
Wafer cassette indexer in a cleanroom mini-environment
Inside a mini-environment that moves wafer cassettes between process boxes, particles are the enemy; the double-lip seals and the outer cover on this 12 mm set keep contamination out of the raceway and off the seal strip.
Is the Airtac LRM Miniature Linear Guide LRM12N2X320S10CP the Right Guide?
Specify this set when the axis must hold a line as well as a position: preload C plus precision grade P is the firmest, tightest combination stocked in size 12, and it rewards a properly prepared seat - grind or finish-mill the mounting face and align the datum on the same side for both carriages. If the load is substantial, cantilevered or moment-dominated, the honest answer is LSH, whose catalogue carries the per-carriage dynamic, static and moment ratings LRM simply does not publish. For short travel where crossed-roller stiffness is the goal, weigh LGC alongside. Before committing, check off: form (complete set, rail plus two carriages), 12 mm rail width, standard carriage length, two blocks, 320 mm rail length, preload C (rigid, higher drag, less tolerant of seat errors), accuracy P, top-mount fixing, the pairing code if a spare carriage is ever ordered alone, and a load rating confirmed with us per model.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LRM Miniature Linear Guide LRM12N2X320S10CP FAQ
Rail 12 mm wide and 320 mm long; two standard carriages; medium preload (C); precision accuracy (P); top-mount fixing. M3 screws: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Ambient temperature limit 80 C with transient peaks to 100 C. Carriages ship with Kyodo Yushi PS No. 2 grease; re-grease through the rear hole every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model on request.
When the load stops being light. LRM is built for small, precise, smooth travel - a 12 mm rail, 320 mm long, two preloaded precision carriages, running below 80 C ambient. The moment the load is heavy, overhung or rich in overturning moment, choose LSH, which publishes per-carriage dynamic, static and moment ratings you can size against; LRM publishes none, and we confirm its figures per model. And if travel is short and crossed-roller rigidity is the goal, LGC may fit better still.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LRM Miniature Linear Guide LRM12N2X320S10CP
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.