Airtac LRM Miniature Linear Guide LRM12N1X220S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X220S10CHT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length220 mm
- AccuracyH — high 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 LRM12N1X220S10CHT
LRM12N1X220S10CHT is the underside-fixed version of this 220 mm axis: a stainless rail 12 mm across with one standard recirculating-ball carriage, screwed down from below so the visible top face runs smooth and uninterrupted along its whole length. The carriage is supplied in place, pre-greased, ready to run.
Two handling cautions shape how you treat this model. On an inclined mounting the carriage can slide off under its own weight, so hold it whenever the rail is tilted; and although ball retention helps during fitting, a quick or skewed insertion can still drop balls - work slowly or use a dummy rail. Medium preload C stiffens the bearing against light tipping components but asks for a well-prepared mounting face, ground or finish-milled to hold the rated travel accuracy. Balls are ISO 3290 G10 grade, Japanese made, and ambient temperature tops out at 80 C. Load and moment figures are not published for the LRM series, so we confirm them for this exact configuration on RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X220S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X220S10CHT |
|---|---|
| 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 | 1 |
| Rail length | 220 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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 LRM12N1X220S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X220 | 1 carriage on a 220 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 220 mm |
| Carriage | Yes, 1 |
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 LRM12N1X220S10CHT Is Used
Micro-milling machine cross-slide
A watchmakers' milling table traversing 220 mm gains from underside fixing that leaves the slideway top flush beneath the workpiece and its clamps.
Vision camera slide over a moving web
A line-scan camera traverses the web on this rail with the screws hidden underneath, so nothing snags the film loop or the dressing harness above it.
Fiber-optic alignment fixture
Bringing a fiber into line with a lens array over 220 mm of travel needs the steady, play-free motion that medium preload C gives a light optical payload.
Is the Airtac LRM Miniature Linear Guide LRM12N1X220S10CHT the Right Guide?
Choose this code when the structure demands fixing from beneath the rail and you want the firmer C preload; if alignment is hard to guarantee, the lighter B grade is the forgiving alternative. When the load grows or hangs off a bracket, LSH is the series with published dynamic, static and moment ratings to size against - LRM has none, and we verify loads per model. Short travels wanting crossed-roller stiffness point to LGC instead. Confirm before ordering: complete set form, 12 mm rail width, standard carriage, single carriage, 220 mm rail, medium preload with its trade-off, high H accuracy, bottom-mount direction, and our confirmation of the load rating.
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 LRM12N1X220S10CHT FAQ
Rail 12 mm wide and 220 mm long, stainless steel, with one standard carriage, medium preload C, high accuracy H, bottom-mount fixing and a 10 mm end-hole offset. Screw torque for M3: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. The ambient temperature limit is 80 C with brief peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. The manufacturer publishes no load, moment or parallelism data for LRM - we confirm those figures per model.
It is a complete set - the 220 mm rail and the carriage are supplied assembled, so no pairing code is involved. Carriage-only LRM12BK codes carry a pairing letter A to E that must match the rail they run on; if you ever order one, read the letter off the original rail. Bare carriages are thin in our stock - four SKUs in total - which is why complete sets like this one are the usual way to buy.
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 LRM12N1X220S10CHT
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.