Airtac LRM Miniature Linear Guide LRM12N2X445S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X445S10CHT 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 length445 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 LRM12N2X445S10CHT
This SKU is a complete AirTAC LRM miniature linear guide: a 12 mm wide stainless-steel rail, 445 mm long, with two standard-length carriages already fitted and free to run along it. The trailing T in the code marks a bottom-mount rail - the clamping screws pass down through the rail base, so the set suits a machine plate you fix from underneath rather than from above. Both carriages ship charged with Kyodo Yushi PS No. 2 grease and are held on the rail by the internal ball retainer, so nothing rattles loose in transit.
The medium C preload in this code is the stiffest grade LRM offers: it takes up the play in the ball circuit for a firmer feel, but it is the less forgiving choice if the mounting surface is not ground or finish-milled flat. Inside, the carriage runs on ISO 3290 G10 grade balls - that grade applies to the balls themselves, not to the guide assembly - behind a double-lip seal and an outer cover that shields the seal strip from swarf and larger debris. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. AirTAC publishes no load or moment rating for LRM, so we confirm the figures for this exact part when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X445S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X445S10CHT |
|---|---|
| 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 | 445 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 LRM12N2X445S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X445 | 2 carriages on a 445 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, 445 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 LRM12N2X445S10CHT Is Used
SMT pick-and-place head
Twin standard carriages on a bottom-fixed 445 mm rail give a stable twin-bearing span for a small placement head travelling over a feeder bay on a compact SMT bench.
Laser module alignment slide
The stiff C preload holds a diode-laser module without play while it is trimmed into alignment on an optical test rig, and the outer cover keeps dust off the seal strip.
PCB probe fixture
Two carriages raise and lower a probe plate over test points on small electronics assemblies, where the 12 mm rail width fits a slim fixture frame.
Is the Airtac LRM Miniature Linear Guide LRM12N2X445S10CHT the Right Guide?
Decide first whether C preload really fits your build. It gives the firmest, least spongy motion of the three LRM grades, but any bump or bow in the mounting face shows up as heavier, uneven travel - so it rewards a ground or finish-milled seat. If the load on this set is substantial or hangs off a cantilever, step up to LSH instead: that larger series publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. Where travel is short and the job needs crossed-roller rigidity, LGC is the closer match. Before ordering, tick off the checklist: form (this is a complete set), 12 mm rail width, standard carriage length, two carriages, 445 mm rail length, C preload, H accuracy, bottom-mount direction - and send us your application loads so we can confirm the rating for this specific model. It is also worth knowing that 12 mm is where this range genuinely lives: 924 of the 988 listed LRM sets are size 12, so the choice of lengths, preloads and grades is widest there.
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 LRM12N2X445S10CHT FAQ
This set uses a 12 mm wide rail, 445 mm long, with two standard-length carriages, medium C preload, high H accuracy and bottom-mount rail fixing. Tighten M2 screws to 58.8 N.cm in steel, 39.2 N.cm in cast iron or 29.4 N.cm in aluminium; M3 screws take 196 N.cm, 127 N.cm and 98 N.cm respectively. Keep the ambient temperature at or below 80 C with only brief peaks to 100 C, and re-grease every 100 km of travel or every 3-6 months. AirTAC publishes no load, moment or running-parallelism ratings for LRM - we confirm the load figures for this specific model when you enquire.
LRM is the miniature, light-duty end of the range and is chosen for size and smoothness, but the manufacturer publishes no load ratings to size against. LSH is the step up: it lists basic dynamic load, static load and moment ratings per carriage, so if your load is heavy or cantilevered, size the axis in LSH and treat LRM as the choice for compact, light positioning. Send us your application details and we will confirm the ratings that apply to this exact LRM model.
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 LRM12N2X445S10CHT
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.