Airtac LRM Miniature Linear Guide LRM12L2X270S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X270S10CH 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
- PreloadC — medium 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 LRM12L2X270S10CH
The LRM12L2X270S10CH is a complete miniature linear guide set from AirTAC, delivered as one 12 mm wide stainless-steel rail, cut to 270 mm, with two long (L) carriages riding on it as a factory-matched pair. The S10 segment fixes the end-hole offset at 10 mm, preload grade C is the medium grade on the LRM scale, and accuracy is grade H, the high grade. Mounting is top-mount, so the socket screws pass down through the rail into the machine bed.
Two long carriages on a single rail give this 12 mm set a wider, longer bearing footprint than a twin-standard arrangement, which helps any tipping or overhung component on the payload. The recirculating balls are made in Japan to ISO 3290 G10 - a grade that applies to the balls themselves, not an accuracy class for the assembled guide. Each carriage uses a double-lip seal for oil scraping and dust exclusion, protected by an outer cover that also hides the screw heads. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C. Load and moment ratings are not published for LRM; we confirm the figures for this exact model before you commit - raise the RFQ and we will come back with them.
Airtac LRM Miniature Linear Guide LRM12L2X270S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X270S10CH |
|---|---|
| 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 |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | C — medium 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 LRM12L2X270S10CH
| 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. |
| C | C — medium 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 LRM12L2X270S10CH Is Used
Compact XY glue-dispensing stage
A dosing head riding a 12 mm twin-carriage rail on a small dispensing machine: the long carriages resist the nodding moment as the needle lowers to the substrate, and grade H accuracy keeps the bead path repeatable.
PCB connector pick-and-place head
On a compact SMT benchtop placer, this 270 mm top-mount rail carries the placement head over a short vertical stroke. Grade C preload tightens the running feel so the head does not settle between pick and place.
Optical inspection slider
A measuring fixture that scans a lens or sensor chip past a camera benefits from the smooth, preloaded twin-carriage motion and from the 80 C ceiling being comfortably above room-ambient lamp heat.
Is the Airtac LRM Miniature Linear Guide LRM12L2X270S10CH the Right Guide?
Pick LRM when the envelope is tight and the duty is light-precision. If the load is substantial or cantilevered, step up to LSH instead: LSH publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. Where travel is short and the job needs crossed-roller rigidity, LGC is the closer match. Before ordering, work the checklist: complete set versus carriage only, rail width, carriage length (long here), carriage count (2) and rail length (270 mm), preload - grade C is the stiffest LRM option, giving a tighter running feel but less tolerance of installation misalignment - accuracy grade (H), mounting direction (top), and a load rating confirmed with us for this specific model. One practical note: 924 of the 988 stocked LRM sets are size 12, so this configuration ships quickly, and long carriages are stocked 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 LRM12L2X270S10CH FAQ
Rail width 12 mm; rail length 270 mm with a 10 mm end-hole offset; two long carriages on the one rail; preload grade C (medium, the highest grade offered on LRM); accuracy grade H (high); top-mount rail fixing. Carriages ship pre-filled with Kyodo Yushi PS No. 2 grease - re-grease every 100 km of travel or every 3 to 6 months, whichever comes first. M3 fixing screws torque to 196 N.cm in steel, 127 in cast iron, 98 in aluminium. Ambient temperature limit is 80 C with peaks to 100 C. Basic dynamic load, static load and moment ratings are not published for the LRM series; we confirm the figures for this specific model on request before you order.
One 270 mm stainless-steel rail and two factory-matched long carriages, preloaded as a set - nothing else. Fixing screws are not included. The ball-retention design keeps the balls in place during normal handling, but the manufacturer warns that presenting the carriage at an angle or fitting and removing it hastily can still drop balls, so slide it on squarely and take your time. If you expect to swap carriages in the field, plan on a dummy rail to help, and note that carriage-only spares are a thin part of our stock, so most replacement carriages are a special order.
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 LRM12L2X270S10CH
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.