Airtac LRM Miniature Linear Guide LRM12N2X220S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X220S10CHT 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
- 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 LRM12N2X220S10CHT
LRM12N2X220S10CHT is a complete AirTAC LRM miniature linear guide: one 12 mm wide stainless-steel rail cut to 220 mm, carrying two standard-length recirculating-ball carriages. The trailing T in the code makes this a bottom-mount rail, so the fixing screws are driven from underneath the mounting table. You receive the assembled rail and both carriages, greased and ready to bolt down.
Preload C is the medium grade, the stiffest option offered on this series, so the carriages run tight with minimal internal play at the cost of higher drag and a less forgiving fit on imperfect surfaces. Two carriages on one rail share the work and resist tipping along the direction of travel. The recirculating balls are Japanese-made ISO 3290 G10 grade, held by a ball-retention design so they stay in place during handling, while a double-lip seal and outer cover manage dust and keep grease where it belongs. Ambient temperature must stay at or below 80 C. Basic dynamic and static load ratings are not published for LRM, so we confirm the figures for this exact model when you send an RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X220S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X220S10CHT |
|---|---|
| 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 | 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 LRM12N2X220S10CHT
| 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. |
| 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, 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 LRM12N2X220S10CHT Is Used
Compact pick-and-place gantry
Bottom-mount fixing lets the guide sit beneath a fixture plate on a small electronics pick-and-place machine, keeping the top face clear for part nests while the twin carriages carry the head level.
Microscope X-table
A 220 mm stroke under a benchtop microscope stage gives smooth, repeatable positioning, and the grade-H running accuracy holds the sample plane across the travel.
Dispensing valve carrier
Two carriages under a small fluid-dispensing head resist tipping as the valve stops and starts, and preload C removes the play that would smear dot placement.
Is the Airtac LRM Miniature Linear Guide LRM12N2X220S10CHT the Right Guide?
Choose LRM when the priority is a small, smooth, precise guide in a tight envelope. Step up to LSH when the load is substantial or cantilevered, because LSH publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. If travel is short and the job needs crossed-roller rigidity, LGC is the cross-over choice. Before ordering, confirm the form (complete set), rail width 12 mm, carriage length (standard), count (2), rail length 220 mm, preload C - remembering that a firmer preload demands flatter, cleaner mounting faces - accuracy H and the bottom-mount direction, then send us your load case so we can confirm the rating for this model.
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 LRM12N2X220S10CHT FAQ
This set has a 12 mm wide stainless-steel rail 220 mm long with two standard-length carriages fitted. Preload is C (medium), accuracy grade is H (high), and the rail is bottom-mount, fixed with screws driven from below. Recommended screw torque is 196 N.cm for M3 screws into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Ambient temperature must not exceed 80 C, with peaks no higher than 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm them for this model on request.
Pick LRM when the envelope is small and the duty is light: this 12 mm set prioritises footprint, smoothness and precision. Pick LSH when the load is heavy or overhung - LSH publishes dynamic, static and moment ratings per carriage that you can design against, whereas LRM ratings must be confirmed per model. If in doubt, send us the load, duty cycle and mounting sketch and we will recommend the right series.
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 LRM12N2X220S10CHT
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.