Airtac LRM Miniature Linear Guide LRM12N2X245S10AHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X245S10AHT 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 length245 mm
- AccuracyH — high 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 LRM12N2X245S10AHT
This is the bottom-mount variant of the 245 mm, two-carriage 12 mm set. The trailing T in LRM12N2X245S10AHT tells you the fixing is intended from below: the rail is screwed up into a recess or against an overhanging shoulder rather than bolted down from above. You still get a 12 mm stainless-steel rail, two standard recirculating-ball carriages and high (H) accuracy, with no preload (A) and a 10 mm end-hole offset (S10). Everything arrives as one matched set.
Bottom mounting earns its place on machines where the top face of the rail must stay clear - a work surface that parts slide across, or a compact assembly where a driver cannot reach the rail line. Ball retention keeps the balls inside the carriages during handling, though the maker warns that inserting a carriage at an angle or swapping it hastily can still drop balls, so work slowly or use a dummy rail. Pre-filled with Kyodo Yushi PS No. 2 and topped up through the rear lubrication hole, the set needs fresh grease every 100 km of travel or every 3 to 6 months, whichever comes first. Load and moment ratings are not published for LRM; we confirm them for this exact code when you request a quote.
Airtac LRM Miniature Linear Guide LRM12N2X245S10AHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X245S10AHT |
|---|---|
| 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 | 245 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 | 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 LRM12N2X245S10AHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X245 | 2 carriages on a 245 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 245 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 LRM12N2X245S10AHT Is Used
Under-deck sample transport
Mounting from below keeps the rail's top face flush with the deck, so sample trays slide across unobstructed in a compact benchtop analyser.
Field carriage swap on a jig
Ball retention limits ball loss during handling, but swap the carriage slowly or on a dummy rail - and remember carriage-only stock here is thin, so replacements are usually ordered in.
Small indexing pusher slide
A short indexing pusher in a light electronics assembly line suits a 12 mm bottom-mount rail where fasteners cannot be reached from above.
Is the Airtac LRM Miniature Linear Guide LRM12N2X245S10AHT the Right Guide?
Before you commit, run the checklist: is a complete set what you need (this one is), is 12 mm the rail width your drawing shows, is the standard carriage long enough for your bearing span, do you want one carriage or two, and is 245 mm the right rail length - trimming travel before widening the rail is usually the cheaper move, since rail length drives the price across the stocked range far more than rail width does. Preload A means zero preload: the freest-running, most forgiving-to-install grade; B or C add stiffness at the cost of drag and installation care. Accuracy H, bottom-mount direction. If your load is heavy or overhung, move to LSH - it publishes the dynamic, static and moment ratings LRM does not, so you can size with numbers in hand. For short travels needing crossed-roller rigidity, look at LGC instead. Either way, confirm the load rating with us on the RFQ.
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 LRM12N2X245S10AHT FAQ
Published: 12 mm rail width, 245 mm rail length, two standard carriages, preload A (none), accuracy H (high), bottom-mount fixing from the trailing T, 10 mm end-hole offset, stainless-steel rail, an 80 C ambient limit (100 C transient), re-grease every 100 km of travel or every 3 to 6 months, and screw torques of 58.8 N.cm (M2) or 196 N.cm (M3) into steel. Not published: dynamic and static load ratings, moment ratings, running parallelism and maximum speed - AirTAC lists none of these for LRM, so we confirm each one for this exact code when you RFQ.
The rail is designed to be screwed from beneath into a recess or against a shoulder, so its top face stays clear and no fastener heads sit above the running surface. The mounting seat must be ground or finish-milled for the rated travel accuracy to hold, and either side of the rail can serve as the datum face - with two carriages on one rail, keep the datum on the same side for better running accuracy.
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 LRM12N2X245S10AHT
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.