Airtac LRM Miniature Linear Guide LRM12L2X320S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X320S10AP 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 lengthLong carriage
- Carriages2
- Rail length320 mm
- AccuracyP — precision 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 LRM12L2X320S10AP
LRM12L2X320S10AP combines the tighter accuracy grade of the series with the free-running feel of no preload: a 12 mm wide stainless-steel rail, 320 mm long with 10 mm end-hole offsets, fixed from above, carrying two long recirculating-ball carriages. Precision P is the closer-tolerance grade, fitting stages where positional confidence along the axis matters.
Because grade A removes the preload, drag stays low - helpful for belt- or screw-driven axes that should not waste torque, and for manual slides that must glide. The long bodies lengthen the bearing span and spread the load over more balls, steadying any tipping component. The recirculating balls are Japanese-made to ISO 3290 G10; a double-lip seal scrapes oil and excludes dust, and an outer cover shields the seal strip. Keep ambient temperature at or below 80 C, peaks 100 C. AirTAC publishes no load or moment rating for LRM, so include the load case with your RFQ and we confirm the ratings for this exact build.
Airtac LRM Miniature Linear Guide LRM12L2X320S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X320S10AP |
|---|---|
| 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 | 320 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L2X320S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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. |
| 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 LRM12L2X320S10AP Is Used
Small pick-and-place gantry
On a benchtop pick-and-place gantry, preload-free carriages cut drag so the servo or belt drive accelerates the head without fighting stiffness it does not need.
Laser engraver carriage
A compact laser engraver's lens carriage rides smoother over the 320 mm axis when two long blocks keep the head square to the 12 mm rail.
Connector assembly slide
A slide feeding connectors into an assembly fixture holds position repeatably on precision P accuracy across the full 320 mm stroke.
Is the Airtac LRM Miniature Linear Guide LRM12L2X320S10AP the Right Guide?
Price across stocked LRM sets runs from about $66 to $831 on just two rail widths, so nearly all of that spread is rail length and carriage count - a 320 mm rail sits well up that curve, and shortening travel is the cheapest saving available. Long carriages are stocked as deeply as standard ones (512 against 475), so choosing them for stability costs nothing in availability. If the load is substantial or cantilevered, step up to LSH, which publishes per-carriage dynamic, static and moment ratings you can size against; LRM does not. For short travel needing crossed-roller rigidity, step across to LGC. Checklist: complete set, 12 mm rail, two long blocks, 320 mm length, preload A none, accuracy P precision, top-mount fixing, pairing code not applicable - and a load rating we confirm per model before you commit.
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 LRM12L2X320S10AP FAQ
Rail width 12 mm, rail length 320 mm, two long carriages, 10 mm end-hole offset, preload A (none), accuracy P (precision), top-mount rail. Screw torques from the catalogue: M2 - 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium; M3 - 196, 127 and 98 N.cm respectively. Ambient temperature limit 80 C, transient peaks 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 load ratings are not published for LRM - we confirm them for this model on request.
Decide by load and envelope. LRM wins where space is tight and duty is light-precision - here a 12 mm rail with two long, preload-free carriages on precision P accuracy. LSH is the step up when the load is substantial or cantilevered, because its catalogue publishes per-carriage dynamic, static and moment ratings that let you calculate margins; LRM leaves those figures to be confirmed per model. If the stroke is short and crossed-roller rigidity is the priority, LGC is the third series to compare. Either way, send the load case with your RFQ and we will verify the numbers.
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 LRM12L2X320S10AP
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.