Airtac LRM Miniature Linear Guide LRM12N2X120S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X120S10BH 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 length120 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 LRM12N2X120S10BH
LRM12N2X120S10BH is a complete AirTAC LRM miniature linear guide set: a 12 mm wide stainless-steel rail cut to 120 mm, carrying two standard-length recirculating-ball carriages. The pair are preloaded to grade B (light) and inspected to high accuracy (H). The rail takes its fixing screws from the top, and the 10 mm end-hole offset fixes the mounting-hole pattern at each end. You receive the rail and both carriages assembled as one unit.
The carriages run on Japanese-made balls graded ISO 3290 G10 - a grade for the balls alone, not a standard for the guide assembly - and a ball-retention feature keeps those balls in place during handling. Double-lip seals scrape lubricant back into the raceways and exclude dust, while an outer cover shields the seal strip from larger debris. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. Two carriages on one 120 mm rail resist tipping along the travel, and the light preload keeps running drag low - the trade-off is less rigidity than grade C would give. Load and moment ratings are not published for LRM; we confirm the figures for your exact model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X120S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X120S10BH |
|---|---|
| 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 | 120 mm |
| 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 LRM12N2X120S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X120 | 2 carriages on a 120 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, 120 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 LRM12N2X120S10BH Is Used
Compact XY dispensing stage
Glue and solder-paste heads in small electronics cells run short 120 mm strokes; two light-preloaded carriages stop the head from nodding at the ends of travel.
PCB inspection camera slide
An AOI camera carried along a printed circuit board needs smooth, repeatable motion on a slim 12 mm rail; grade H accuracy holds position between frames.
Microplate shuttle in lab automation
A bench-top liquid handler stepping a 96-well plate between stations fits comfortably inside the envelope of a 120 mm rail with two standard blocks.
Is the Airtac LRM Miniature Linear Guide LRM12N2X120S10BH the Right Guide?
Size up to LSH when the load becomes substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can plug into a calculation, which LRM does not. Step across to LGC if the travel is short and the job needs crossed-roller rigidity rather than ball-plate smoothness. Before ordering, tick the checklist: form (set or carriage only), 12 mm rail width, standard or long carriage, number of carriages and rail length, preload with its installation trade-off, H or P accuracy, top or bottom rail fixing - and confirm the load rating with us before you commit. At size 12, 924 of our 988 stocked sets are on the shelf, so this configuration ships from existing inventory.
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 LRM12N2X120S10BH FAQ
This set uses a 12 mm wide stainless-steel rail, 120 mm long, with two standard-length carriages, light preload (B), high accuracy (H), top-mount rail fixing and a 10 mm end-hole offset. Screw torque: M3 at 196 N.cm into steel, 127 into cast iron and 98 into aluminium; M2 at 58.8, 39.2 and 29.4 N.cm respectively. Ambient temperature must stay at or below 80 C, with transient peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. Basic dynamic, static and moment ratings are not published for LRM, so we confirm them for this exact model when you send the RFQ.
Yes. This code is a complete set: one 120 mm rail plus two carriages mounted on it. Carriage-only AirTAC part numbers carry the letters BK and ship without any rail; only four carriage-only SKUs are stocked, so replacing a single block is usually a special order. If you plan field swaps, ask us about a spare set or a dummy rail, because inserting a carriage at an angle can still drop balls despite the retention design.
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 LRM12N2X120S10BH
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.