Airtac LRM Miniature Linear Guide LRM12N2X320S10AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X320S10AH 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
- AccuracyH — high grade
- PreloadA — no 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 LRM12N2X320S10AH
LRM12N2X320S10AH is a complete set, not a bare rail: one 320 mm stainless-steel rail, 12 mm wide, with two standard-length recirculating-ball carriages riding it and a 10 mm end-hole offset for the fixing screws. Rail and carriages ship as one assembled unit, so nothing needs threading together on the bench.
The common-rail design matters here: every LRM12 carriage shares the same rail profile, so a standard or long block can run on this identical rail if a rebuild ever calls for it. The ISO 3290 G10 Japanese balls - a grade applying to the balls alone, not a standard for the guide - run behind double-lip seals under an outer cover that hides the screws and keeps debris off the seal strip. At 320 mm this rail sits comfortably short of the 1005 mm catalogue maximum for size 12, leaving headroom to re-spec a longer travel without changing series. Keep ambient temperature at or below 80 C (transient peaks to 100 C). No load or moment rating is published for LRM; send the RFQ and we confirm the numbers for this model.
Airtac LRM Miniature Linear Guide LRM12N2X320S10AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X320S10AH |
|---|---|
| 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 | H — high 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12N2X320S10AH
| 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. |
| A | A — no preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| H | H — high 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 LRM12N2X320S10AH Is Used
PCB test fixture slide
Positions a spring-probe test head over printed circuit boards on a bench fixture, where the 320 mm stroke spans a row of boards and the plain finish suits an electronics-lab environment.
Optical fiber alignment stage
Slides a fiber coupler into fine alignment with a laser or source on an optical bench, where the no-preload carriage gives hand-friendly, low-stiction positioning.
Machine-vision camera focus rail
Carries a compact inspection camera along a focus axis over a moving web or tray, with two blocks keeping the camera square to the lens axis along the full stroke.
Is the Airtac LRM Miniature Linear Guide LRM12N2X320S10AH the Right Guide?
Sizing starts with a conversation, because LRM publishes no load figures - the RFQ is where we confirm dynamic and moment capacity for this exact SKU. If the load is heavy or cantilevered, move to LSH, whose published per-carriage dynamic, static and moment ratings let you calculate instead of enquire. For short travel needing crossed-roller rigidity, LGC is the cross-series alternative. Checklist for this SKU: complete set, 12 mm rail width, standard carriage length, two blocks, 320 mm rail, 10 mm hole offset, preload A, accuracy H, top-mount rail. Cost note worth folding into the decision: across the range the price spread runs from about $66 to $831 across only two rail widths, so rail length and carriage count - not size - drive almost all of it; trimming travel before finalising the layout is the cheapest saving available.
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 LRM12N2X320S10AH FAQ
In the box: one 320 mm stainless-steel rail, 12 mm wide, with two standard-length carriages factory-fitted, top-mount fixing, preload A (none) and accuracy H (high). Figures you can rely on: M2 screws 58.8 N.cm into steel (M3 screws 196 N.cm), ambient temperature capped at 80 C with peaks to 100 C, re-grease every 100 km or every 3 to 6 months. What is deliberately absent: dynamic, static and moment load ratings, which the manufacturer does not publish for LRM - we confirm them per model through the RFQ.
A spare LRM12 carriage is ordered as a separate BK part code and only a handful of carriage-only items are held, so plan ahead rather than treating a swap as an off-the-shelf event. The ball-retention design keeps the balls in during normal handling, but the manufacturer is explicit that inserting a carriage at an angle, or fitting and removing it quickly, can still drop balls - a dummy rail makes field swaps safe. Also hold the carriage whenever the rail is inclined, because it can slide off under its own weight.
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 LRM12N2X320S10AH
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.