Airtac LRM Miniature Linear Guide LRM12N2X220S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X220S10AP 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 LRM12N2X220S10AP
The LRM12N2X220S10AP is a factory-assembled AirTAC LRM set: a 220 mm stainless rail, 12 mm wide, running two standard carriages, with fixing holes starting 10 mm from each end. The rail mounts from the top, and because LRM is a common-rail design, the identical rail profile also accepts long carriages later if you need a longer bearing span.
Preload code A means no built-in preload: the carriages glide with the least drag in the range, which suits gravity-assisted drops and mechanisms you want to move by hand, at the cost of a little residual clearance. Accuracy grade P is the precision class. Inside each carriage, Japanese-made balls graded ISO 3290 G10 circulate in the raceways, while a double-lip seal and an outer cover keep grease in and swarf out. Mind the re-greasing clock: every 100 km of travel or every 3 to 6 months, whichever comes first - a 200 mm stroke cycling once a second covers 100 km in roughly three weeks of continuous running, so distance usually binds before the calendar. Load and moment ratings are not published for LRM; ask us and we will confirm them for this model before ordering.
Airtac LRM Miniature Linear Guide LRM12N2X220S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X220S10AP |
|---|---|
| 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 |
| 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 LRM12N2X220S10AP
| 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 LRM12N2X220S10AP Is Used
Wafer tray indexing
Sliding semiconductor carrier trays between inspection nests in a benchtop handler, where zero preload keeps the drive torque tiny.
Camera rail on a vision tester
Traversing a compact camera over printed boards at an AOI bench, with two carriages on one rail steadying an overhung sensor head.
Syringe dispenser gantry
Guiding a small syringe dispenser across a 220 mm path in an electronics encapsulation cell, where free-sliding carriages let a light belt drive hold position.
Is the Airtac LRM Miniature Linear Guide LRM12N2X220S10AP the Right Guide?
If the load is heavy or hangs off a cantilever, step up to LSH: that series publishes dynamic, static and moment ratings per carriage, so you can size on paper - something LRM cannot offer, since no load figures exist for it. For short travels needing crossed-roller stiffness, compare LGC. Confirm the checklist before ordering: complete set form, 12 mm rail width, standard carriage length, two carriages, 220 mm rail, preload A (freest sliding, no clearance removal - choose B or C if you need firmer running), precision grade P, top-mount holes, and a load rating confirmed with us.
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 LRM12N2X220S10AP FAQ
A 12 mm stainless rail, 220 mm long, with two standard carriages running without preload (code A) at precision accuracy (grade P), mounted from the top with holes 10 mm from each rail end. Screw torques: M2 at 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 at 196, 127 and 98 N.cm. Keep ambient temperature at or under 80 C, brief peaks to 100 C, and re-grease after each 100 km of travel or every 3-6 months. Load and moment ratings are not published for this series; we confirm them per model.
Choose LRM when the envelope is tight and the duty is light: this set gives you a 12 mm rail in a compact section with precision accuracy and two carriages to share the load. Choose LSH when the load is substantial or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that you can design against, while LRM's figures must be confirmed per model. If rigidity over a short travel matters more than envelope, LGC crossed rollers are the third option.
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 LRM12N2X220S10AP
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.