Airtac LRM Miniature Linear Guide LRM12L2X370S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X370S10BP 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 length370 mm
- AccuracyP — precision 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 LRM12L2X370S10BP
LRM12L2X370S10BP is a 12 mm wide, 370 mm long stainless-steel rail set carrying two long recirculating-ball carriages, built to accuracy grade P - the tighter of the two grades stocked - with top-mount fixing, meaning the screws are driven down into the bench or plate from above. Light preload grade B keeps running resistance low.
Across our stocked LRM sets the price spread from about $66 to $831 comes almost entirely from rail length and carriage count, not rail width, so a 370 mm two-carriage set sits in the upper-middle of that band - trimming travel, not size, is what saves money. Inside each carriage, Japanese ISO 3290 G10 balls (a ball grade only, not an assembly standard) run behind double-lip seals, and an outer cover keeps chips off the seal strip. The ambient limit is 80 C. No load or moment figure is published for LRM; ask us by RFQ and we confirm it for this exact code.
Airtac LRM Miniature Linear Guide LRM12L2X370S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X370S10BP |
|---|---|
| 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 | 370 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L2X370S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X370 | 2 carriages on a 370 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 370 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 LRM12L2X370S10BP Is Used
Microelectronics assembly cell
A small tape-and-reel handler or component feeder that indexes parts under a placement head benefits from the low friction and precision-grade repeatability of this 12 mm set.
Dimensional measuring fixture
A workshop gauge bench checking machined pin diameters wants the tightest stocked accuracy grade along the travel, which is exactly what the P grade of this rail delivers.
Lens focus translator
Mounting a machine-vision lens on a fine focus slide calls for smooth, even carriage motion; the long blocks steady the optic and light preload keeps adjustment silky.
Is the Airtac LRM Miniature Linear Guide LRM12L2X370S10BP the Right Guide?
Size upward to AirTAC LSH when the applied load is heavy or overhung, because LSH publishes the per-carriage dynamic, static and moment numbers you can calculate against and LRM deliberately does not. Size across to LGC when the stroke is short and crossed-roller stiffness is the priority. Checklist for this code: it is a complete set, rail width 12 mm, long carriages, two per rail, 370 mm rail length, preload B (light - smoother running, a little more compliance), accuracy P, top-mount rail, and a load rating confirmed with us before you commit the drawing.
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 LRM12L2X370S10BP FAQ
This is a complete set: 12 mm rail width, 370 mm rail, two long carriages, preload B (light), accuracy grade P, top-mount fixing. Torque: M2 screws 58.8 N.cm (steel), 39.2 (cast iron), 29.4 (aluminium); M3 screws 196, 127, 98 N.cm. Do not exceed 80 C ambient, 100 C transients. Regrease with Kyodo Yushi PS No. 2 every 100 km or every 3 to 6 months, whichever comes first. LRM has no published load, moment, parallelism or speed rating; we confirm these per model.
One 370 mm stainless-steel rail, 12 mm wide, with the two long carriages already running on it and pre-filled with grease - a complete, ready-to-bolt set. Pairing codes only exist on carriage-only codes, so none applies here, and we hold no rail-only stock. If you ever need just a spare carriage, it is a special order: carriage-only stock holds only four codes. A dummy rail is worth having for that swap, because even the ball-retention design can drop balls on a rushed refit.
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 LRM12L2X370S10BP
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.