Airtac LRM Miniature Linear Guide LRM12L2X290S20AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X290S20AH 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 length290 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 LRM12L2X290S20AH
The AirTAC LRM12L2X290S20AH is a complete miniature linear guide set: a 12 mm wide stainless-steel rail, 290 mm long, with two long (L) recirculating-ball carriages already fitted and pre-greased. The 20 mm end-hole offset locates the rail fixing holes, and both carriages are the long-body type, so the ball complement spreads over a longer footprint than a standard block.
Because two carriages ride this one rail, the assembly resists tipping along the direction of travel - the geometry a small gantry or light vertical slide needs. The design uses a common rail profile shared across LRM carriage types, ball retention to stop balls scattering during handling, Japanese-made ISO 3290 G10 balls (a grade for the balls themselves, not for the assembled guide), a double-lip seal for grease retention and dust exclusion, and an outer cover that shields the seal strip from 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 model before you order - send the RFQ with your load case.
Airtac LRM Miniature Linear Guide LRM12L2X290S20AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X290S20AH |
|---|---|
| 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 | 290 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L2X290S20AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X290 | 2 carriages on a 290 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, 290 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 LRM12L2X290S20AH Is Used
Compact XY dispensing stage
A twin-rail XY table on a bench-top glue or solder-paste dispenser gains anti-tip stability from the two-carriage layout, with 290 mm of stroke per axis in a small footprint.
Small pick-and-place head
A light SMT pilot-plant head sliding on a 12 mm rail reaches its feeder and board position smoothly; the long carriages keep the head square at the ends of travel.
Microscope inspection fixture
A sample stage on a metrology bench slides repeatably without stick-slip, and the stainless rail suits a wiped-down, low-particle work area.
Is the Airtac LRM Miniature Linear Guide LRM12L2X290S20AH the Right Guide?
Sizing goes two ways. Step up to AirTAC LSH when the load is substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can calculate against, which LRM does not. Step across to LGC when the travel is short and the job needs crossed-roller rigidity. Before you commit to this set, tick the checklist: complete set with rail included, 12 mm rail width, long carriage, two blocks, 290 mm rail, preload A (free-running; grades B and C add stiffness at the cost of drag), accuracy H, top-mount fixing - and confirm the load rating with us, since it varies per model. Availability is good here: LRM12 accounts for 924 of the 988 sets we stock, and long carriages are held as deeply as standard ones.
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 LRM12L2X290S20AH FAQ
This is a complete set with a 12 mm wide stainless-steel rail, 290 mm long, carrying two long carriages in preload grade A (none), accuracy H (high), top-mount fixing and a 20 mm end-hole offset. Rail fastening with M2 screws is torqued to 58.8 N.cm in steel, 39.2 in cast iron and 29.4 in aluminium; M3 figures are 196, 127 and 98 N.cm. Ambient temperature must stay at or below 80 C, with short peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm them per model before ordering.
It is a complete set: the rail and both long carriages ship together, assembled and pre-filled with Kyodo Yushi PS No. 2 grease, so nothing else is needed to mount it. If you ever need a spare carriage, note that carriage-only stock is thin - only four pairing-code-C part numbers are held - so a replacement is normally a special order matched to the pairing letter on your rail.
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 LRM12L2X290S20AH
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.