Airtac LRM Miniature Linear Guide LRM12N2X345S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X345S10BP 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 lengthStandard carriage
- Carriages2
- Rail length345 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 LRM12N2X345S10BP
The LRM12N2X345S10BP combines the two qualities buyers most often ask for together: precision accuracy grade P and light preload grade B, on a 12 mm wide stainless-steel rail 345 mm long with two standard recirculating-ball carriages. It is a top-mount set, so the fixing screws go in from above on an open machine bed, and the S10 code fixes the end-hole offset at 10 mm.
Inside each carriage, Japanese-made balls graded ISO 3290 G10 - a grade for the balls only - recirculate through races sealed by a double-lip seal, with an outer cover shielding the seal strip and hiding the screws. Every LRM12 carriage shares the same rail profile, so a future change of carriage length does not force a rail change. The ambient ceiling is 80 C with brief peaks to 100 C - a real constraint next to heaters, ovens or lasers. The manufacturer publishes no load or moment rating for LRM; send the RFQ and we will confirm the figures for this exact configuration.
Airtac LRM Miniature Linear Guide LRM12N2X345S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X345S10BP |
|---|---|
| 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 | 2 |
| Rail length | 345 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 LRM12N2X345S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X345 | 2 carriages on a 345 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, 345 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 LRM12N2X345S10BP Is Used
Semiconductor lead-frame feed
Feeding lead frames into a compact bonder is a light, short-travel job where precision accuracy P pays off in placement repeatability - exactly the envelope the LRM series was drawn for.
Film web edge-guide slide
A small optical film or label web needs an edge-guide roller that shifts laterally with minimal overshoot. Light preload B damps play while precision accuracy keeps the guide line true.
Micro assembly cell light column
A benchtop assembly cell placing connectors can use this rail as a light vertical column. Two carriages on one rail help against tipping, and we confirm the exact ratings for your column weight before you order.
Is the Airtac LRM Miniature Linear Guide LRM12N2X345S10BP the Right Guide?
The honest sizing route: LSH when the load is real enough to need published dynamic, static and moment figures (LRM publishes none), LGC when travel is short and crossed-roller rigidity wins. This BP set suits jobs that want precision accuracy combined with a little preload - a combination worth checking against the shelf before settling for stock H grade. Run the checklist: complete set, 12 mm rail, standard carriage, two blocks, 345 mm rail, preload B light, P accuracy, top-mount direction, and a per-model load rating confirmed through our RFQ before you commit the design.
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 LRM12N2X345S10BP FAQ
You can rely on: 12 mm rail width, 345 mm rail length, two standard carriages, light preload B, precision accuracy P, top-mount mounting. Screw torques run 196 N.cm (steel), 127 N.cm (cast iron) and 98 N.cm (aluminium) for M3, and 58.8 / 39.2 / 29.4 N.cm for M2. The ambient ceiling is 80 C with transient peaks to 100 C; re-greasing falls due every 100 km of travel or every 3 to 6 months. Basic dynamic load, static load and moment ratings are not published for LRM - we confirm them per model through the RFQ.
It is a complete set: one 12 mm stainless-steel rail, 345 mm long, with both standard carriages fitted and pre-greased with Kyodo Yushi PS No. 2. Besides your mounting base and screws, nothing else is needed to create a working axis - though surfaces should be ground or finish-milled for the rated travel accuracy, and the mounting-surface values in the datasheet apply per size. Bottom-mount versions and carriage-only codes exist in the range but are separate SKUs.
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 LRM12N2X345S10BP
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.