Airtac LRM Miniature Linear Guide LRM12N1X270S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X270S10BHT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- 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 LRM12N1X270S10BHT
Order code LRM12N1X270S10BHT is a complete set with one twist: the trailing T means the 12 mm wide, 270 mm long stainless rail mounts from the bottom, its screws recessed inside the rail so the top face stays clear. One standard-length carriage rides the rail under light preload B, finished to high accuracy (H), with end fixing holes 10 mm from each rail end.
Bottom-mounting earns its keep where the deck above must stay flat and unbroken - under a cover plate, inside a slot, or on a frame you can only reach from below. Fit the rail to a ground or finish-milled surface, and note that either long side of the rail can serve as the datum face. The ball-retention design holds the balls during ordinary handling, but sliding the carriage on at an angle or rushing a removal can still drop them, so work deliberately and keep a dummy rail handy. Ambient temperature must stay at or below 80 C with peaks no higher than 100 C. Load and moment ratings are not published for LRM - we confirm them for this exact model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X270S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X270S10BHT |
|---|---|
| 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 | 1 |
| 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 LRM12N1X270S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X270 | 1 carriage 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, 1 |
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 LRM12N1X270S10BHT Is Used
Wafer inspection microscope slide
A microscope stage carrying wafers between inspection positions gains from the concealed fasteners: nothing projects above the rail to shadow the optics or snag a wafer boat.
Gauge slide on an optical comparator
Comparator fixtures need a flat, unbroken top deck; bottom-mount fixing leaves the measuring surface uninterrupted while the light preload steadies the carriage under the indicator.
Concealed-rail electronics test fixture
Test rigs for PCB assemblies often hide motion beneath a worktop; driving the screws from below keeps cable looms, probes and pogo-pin blocks clear of exposed hardware.
Is the Airtac LRM Miniature Linear Guide LRM12N1X270S10BHT the Right Guide?
If your load is heavy or hangs off a cantilever, step up to LSH, which publishes dynamic, static and moment ratings per carriage and supports the arithmetic LRM cannot. For short strokes needing crossed-roller stiffness, cross to LGC. This BHT set suits a layout where the working surface sits above the rail and screws must be driven from underneath. Checklist before ordering: complete set form, 12 mm rail width, standard carriage length, single carriage, 270 mm rail, light preload B (stiffer than A, less rigid and less surface-critical than C), accuracy H, bottom-mount direction. And because LRM lists no load figures anywhere in the catalogue, confirm the rating with us for this exact code before you commit.
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 LRM12N1X270S10BHT FAQ
Published data covers the form and installation, not loads: 12 mm rail width, 270 mm length, one standard carriage, light preload (B), high accuracy (H), bottom-mount rail with fixing holes 10 mm from each end. Torques are M2 - 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium; M3 - 196, 127 and 98 N.cm. The ambient limit is 80 C with transient peaks to 100 C, and grease intervals run 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 model - raise an RFQ and we will reply with the figures.
Yes - the box holds the full set: one bottom-mount stainless rail, 12 mm wide and 270 mm long, with one standard-length carriage already fitted, preloaded to B and machined to high accuracy. Ball retention keeps the balls aboard during normal handling, but the manufacturer warns that angling the carriage onto the rail or snapping it off quickly can still drop them; work slowly and consider a dummy rail for fitting. Never dismantle the carriage, and do not separate it from the rail unless you must. We stock only four carriage-only SKUs across the whole range, so a replacement carriage is usually a special order - one more reason to handle this one carefully. Load and moment ratings stay unpublished for LRM, so confirm them with us per 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 LRM12N1X270S10BHT
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.