Airtac LRM Miniature Linear Guide LRM12N2X220S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X220S10APT 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 length220 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 LRM12N2X220S10APT
Order the LRM12N2X220S10APT and you receive a full miniature linear guide: a 12 mm wide stainless-steel rail cut to 220 mm, running two standard carriages, finished to P precision accuracy. The T at the end of the code switches the mounting to bottom-fix - the rail is bolted up from underneath, which suits machines where the top face must stay unbroken.
That hidden fixing style pairs naturally with precision work: no screw heads above deck to interfere with fixtures, probes or optics. Ball retention in the carriages keeps the ISO 3290 G10 Japanese balls in place during handling, though the manufacturer cautions that inserting a carriage at an angle can still shed balls - a dummy rail makes carriage fitting safe. Ambient temperature must stay at or below 80 C, with transient peaks to 100 C. Since LRM has no published load or moment ratings, we confirm the numbers for this exact set before you order - ask via the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X220S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X220S10APT |
|---|---|
| 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 | 220 mm (spliced sections) |
| 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 LRM12N2X220S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X220 | 2 carriages on a 220 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, 220 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 LRM12N2X220S10APT Is Used
Laser path alignment slide
A precision, bottom-fixed rail carries a mirror or beam-splitter mount on a small alignment slide without hardware protruding into the beam area.
Fibre connector polishing feed
The guide moves a fibre connector holder across a polishing or inspection station with repeatable, precision-grade motion over 220 mm.
Connector test probe slide
Two carriages steady a probe bar that steps along connectors on a cable test rig, with the rail fixed beneath the mounting plate.
Is the Airtac LRM Miniature Linear Guide LRM12N2X220S10APT the Right Guide?
When the load is significant or overhung, move up to LSH - it publishes per-carriage dynamic, static and moment ratings you can design against, something LRM does not provide. Where travel is short and crossed-roller rigidity is the priority, price LGC as well. Checklist for this SKU: complete set form, 12 mm rail width, standard carriage length, 2 carriages, 220 mm rail length, preload A (no preload - simplest installation, most free play), P precision grade, bottom-mount orientation. Confirm the load rating with us before finalising the design.
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 LRM12N2X220S10APT FAQ
Complete set: 12 mm rail width, 220 mm stainless rail, 10 mm end offset, two standard carriages, preload A (none), accuracy P (precision), bottom-mount fixing. Mounting surfaces should be ground or finish-milled to achieve rated travel accuracy. Torque M2 screws to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 to 196, 127 and 98 N.cm respectively. Ambient temperature limit 80 C, peaks 100 C. Re-grease every 100 km of travel or every 3 to 6 months. LRM load and moment ratings are not published; we confirm them per model.
Choose LRM12 when the envelope is tight and the duty is light - this series wins on size, smoothness and fit. Choose LSH when the load is substantial or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage and LRM does not; without published figures, LRM sizing has to be confirmed with us model by model. For short travel where crossed-roller rigidity matters, compare LGC too.
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 LRM12N2X220S10APT
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.