Airtac LRM Miniature Linear Guide LRM12L2X270S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X270S10BHT 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 length270 mm
- AccuracyH — high grade
- PreloadB — light 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 LRM12L2X270S10BHT
Order LRM12L2X270S10BHT and you receive a 12 mm stainless-steel rail, 270 mm long, with two long recirculating-ball carriages under light B preload - fixed from below, because the trailing T means the rail is drilled for bottom-mounting: the machine deck is bored through and the screws reach the rail from underneath.
That detail matters in low-profile machines. With no screw heads standing proud, the rail sits flush in a slot or under a thin platform, and the top face stays clear for product flow. The double-lip seals and outer cover handle oil scraping and debris; the carriages run on Japanese-made ISO 3290 G10 balls - a grade for the balls alone, not a standard for the guide - retained so they do not spill during fitting. Keep ambient temperature at or under 80 C, with brief excursions to 100 C. Because two carriages share this rail, give both the same datum side when you fixture them; the running accuracy improves for it. Load and moment ratings are not published for LRM; tell us the application and we confirm the figures for this exact model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X270S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X270S10BHT |
|---|---|
| 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 | 270 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 | B — light 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 LRM12L2X270S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X270 | 2 carriages on a 270 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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, 270 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 LRM12L2X270S10BHT Is Used
Benchtop autosampler x-axis
The x-axis of a benchtop HPLC autosampler: the deck is a thin plate, so the rail bolts from below and the two long carriages carry the sampling arm without rocking.
Wafer cassette shuttle
A wafer cassette shuttle inside a small semiconductor tool, guided on a flush-mounted rail that leaves the top surface unobstructed for the cassette path.
Micro-dispensing gantry
A benchtop adhesive micro-dispensing gantry whose slim base plate has no room for protruding screw heads - bottom fixing keeps the working profile down.
Is the Airtac LRM Miniature Linear Guide LRM12L2X270S10BHT the Right Guide?
When the payload is heavy or sits on a long lever arm, the absence of published LRM ratings becomes a real limit - switch to LSH, whose catalogue gives dynamic, static and moment figures per carriage that you can plug straight into your sizing. Short-travel work needing maximum stiffness per millimetre belongs with LGC crossed rollers. For this SKU, verify the checklist: it is a complete set, not a carriage-only part; 12 mm rail, 270 mm long, two long blocks; preload B, the lighter and smoother option against the stiffer C grade; accuracy H; bottom-mount fixing. Send us the load case first - we confirm the rating for this exact model before you order.
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 LRM12L2X270S10BHT FAQ
Rail 12 mm wide by 270 mm long, two long carriages, preload B (light), accuracy H, bottom-mount fixing. M2 screws torque to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 screws take 196, 127 and 98 N.cm. The manufacturer caps ambient temperature at 80 C with 100 C transients. Lubricate with Kyodo Yushi PS No. 2 through the rear hole every 100 km of travel or every 3 to 6 months. No load or moment rating is published for LRM; we confirm it per model on request.
One assembled set: the 270 mm stainless rail with both long carriages already fitted and pre-greased, bottom-mount holes being the only difference from the top-mount version of this same set. Nothing else is included - no mounting screws, no end stops, and no bolt caps (the L-BC-M3-10P cap pack for LRM9 exists in the catalogue but is a special order, not stock).
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 LRM12L2X270S10BHT
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.