
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X410S5AH 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.
The LRM12L2X410S5AH is a complete set built around a 410 mm stainless steel rail, 12 mm wide, carrying two long recirculating-ball carriages fixed from above. At 410 mm it sits well along the way to the 1005 mm full catalogue length for size 12, giving a generous stroke without leaving the miniature series. Preload A means no preload at all: the carriages roll with the least drag of any LRM grade, easy to move by hand and tolerant of small mounting imperfections.
The balls are Japanese-made ISO 3290 G10 - that grade describes the balls only - kept captive by the ball-retainer design, though a carriage inserted at an angle can still shed one, so fit carefully. A double-lip seal scrapes oil back and excludes dust beneath the outer cover. Ambient temperature must stay at or below 80 C, peaking briefly to 100 C. Load and moment ratings are not published for LRM; request the RFQ and we confirm the figure for this model.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X410S5AH |
|---|---|
| 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 | 410 mm |
| 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X410 | 2 carriages on a 410 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 410 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.
The detector carriage of a small benchtop scanner: with preload A the block glides with minimal drag, so a light motor drives the 410 mm travel smoothly without stick-slip showing in the trace.
A camera slide on a measurement bench: the long twin carriages keep the imaging head level across the full stroke, and accuracy H holds lateral wander within the tolerance of the optics.
A reagent autosampler arm drawing from a microplate row: the 410 mm rail spans the plate bank in one pass, and the ball-retention design helps the carriage survive routine handling during tray changes.
Across our stocked range - about 66 to 831 dollars - nearly all of the price spread comes from rail length and carriage count rather than rail width, so trimming travel is the first lever on cost; a 410 mm twin-carriage rail sits toward the upper-middle of the band. If the load turns out to be substantial or cantilevered, LSH is the step up: its published per-carriage dynamic, static and moment ratings support real calculation, which LRM cannot. For short travels needing crossed-roller rigidity, choose LGC.
Run through the checklist: complete set, 12 mm rail width, long carriage, two blocks, 410 mm rail length, preload A (free-rolling, some play), accuracy H, 5 mm end-hole offset, top-mount rail, and a load rating confirmed with us before committing.
Quick checklist
Rail width 12 mm; rail length 410 mm with a 5 mm end-hole offset; two long carriages; preload A (none); accuracy H (high); top-mount rail. M2 screws torque to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 screws to 196, 127 and 98 N.cm. Ambient temperature must not exceed 80 C, with transient peaks to 100 C, and re-grease after 100 km of travel or every 3 to 6 months. No load, moment or speed ratings are published for LRM - we confirm the load rating per model.
You receive one assembled set: the 410 mm stainless rail with both long carriages fitted and pre-filled with Kyodo Yushi PS No. 2 grease. Mounting screws are not included, and neither is a dummy rail - which we recommend for any future carriage swap, since an angled insertion can still drop balls despite the retainer. Before first use, wipe off the rust-preventive oil and apply lubricant; grease quantities vary per model, so check the datasheet or ask us.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.