Airtac LRM Miniature Linear Guide LRM12L2X420S10AHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X420S10AHT 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 lengthLong carriage
- Carriages2
- Rail length420 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 LRM12L2X420S10AHT
LRM12L2X420S10AHT is a complete miniature linear guide set built around a 12 mm wide stainless-steel rail, 420 mm long, carrying two long recirculating-ball carriages. The trailing T in the code switches the rail to bottom-mount, which suits frames where you cannot reach the screws from above or where the visible face of the machine must stay clear. Preload is A (none) and accuracy is H (high).
Because both long carriages run on a single rail, set the datum reference on the same side of the rail for both - the manufacturer notes this improves running accuracy with two or more carriages. The recirculating balls are ISO 3290 G10, Japanese made; a double-lip seal scrapes lubricant back and excludes dust, and the outer cover keeps larger debris off the seal strip. Keep ambient temperature at or below 80 C. No dynamic or static load rating is published for LRM, so we confirm the rating for this exact code before you commit - ask us through the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X420S10AHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X420S10AHT |
|---|---|
| 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 | Long carriage |
| Carriages supplied | 2 |
| Rail length | 420 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 LRM12L2X420S10AHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X420 | 2 carriages on a 420 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, 420 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 LRM12L2X420S10AHT Is Used
Automated microscope slide stage
Driving a slide carrier under a lab microscope, where mounting the rail from below leaves the top surface clear for the optics and holding clips.
Microfluidic cartridge loader
Positioning a small fluidic cartridge into a reader head inside a sealed instrument housing with no top-side screw access.
Optical breadboard alignment axis
Trimming the position of a compact optical assembly, with the rail bolted underneath the breadboard so the working face stays unobstructed.
Is the Airtac LRM Miniature Linear Guide LRM12L2X420S10AHT the Right Guide?
If your load is heavy or hangs off a cantilever, move up to AirTAC LSH - that series publishes per-carriage dynamic, static and moment ratings you can put into a sizing calculation, something LRM does not offer. For short travel needing crossed-roller stiffness, LGC is the cross-series alternative. When you check this code, run through: complete set form, 12 mm rail width, long carriage, a pair of carriages, 420 mm of rail, preload A (freest running, most tolerant of installation), accuracy H, and the bottom-mount direction that made you choose this SKU. We confirm the load rating for this model by RFQ before you order. Size 12 sits at the heart of our stock - 924 of the 988 LRM sets we hold are LRM12 - so this configuration ships quickly.
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 LRM12L2X420S10AHT FAQ
This set runs on a 12 mm wide, 420 mm long stainless-steel rail with two long carriages, preload A (none), accuracy grade H and a bottom-mount rail, end holes offset 10 mm. Drive M3 mounting screws to 196 N.cm in steel, 127 N.cm in cast iron or 98 N.cm in aluminium. Keep ambient temperature at or below 80 C with peaks to 100 C, and re-grease every 100 km of travel or every 3 to 6 months. AirTAC publishes no load, moment, speed or parallelism figures for LRM; we confirm the load rating for this exact model through your RFQ.
Choose LSH when the load is substantial or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that you can size against; LRM publishes none. Choose LRM when the envelope is tight and the duty is light precision positioning - this 12 mm bottom-mount set is typical LRM territory. Send us the load, moment and duty details by RFQ and we will confirm the right series and the exact 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 LRM12L2X420S10AHT
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.