Airtac LRM Miniature Linear Guide LRM12N2X120S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X120S10CH 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
- 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 LRM12N2X120S10CH
This complete AirTAC LRM set is a 12 mm stainless-steel rail cut to 120 mm, carrying two standard-length recirculating-ball carriages. Because the code has no trailing T, the rail is the top-mount type: fix it with cap screws driven down through the rail from above, either side can serve as the datum face. Everything arrives as one assembly, ready to bolt down.
Preload C is the medium grade - the firmest LRM offers, with no heavy option in the series. It removes perceptible play, which suits a twin-carriage arrangement where a head mounted between the blocks has to stay square against a tipping moment along the travel. Inside each carriage run Japanese-made balls graded ISO 3290 G10 - that grade applies to the balls alone, not to the guide assembly. Double-lip seals scrape grease and shut out dust, and the outer cover hides the screw holes while screening the seal strip from larger debris. Ambient temperature must stay at or below 80 C, with brief peaks no higher than 100 C. Load and moment ratings are not published for LRM; we confirm the figures for this exact model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X120S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X120S10CH |
|---|---|
| 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 | 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 LRM12N2X120S10CH
| 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. |
| 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, 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 LRM12N2X120S10CH Is Used
Compact coordinate-measuring stage
A benchtop XY table for checking stamped connector pins needs a short 120 mm axis that stays square. Two carriages under one plate resist rocking along the travel, and the medium preload keeps the bridge from drifting between measurements.
Laser collimator alignment fixture
Aligning a diode laser to a fiber stub on an optical bench is a light-load, high-finesse job. The high-accuracy grade and firm preload give repeatable clicks of movement, and the twin blocks hold the carrier level over the 120 mm span.
RF probe positioner for PCB test
Sliding a RF probe over test pads demands play-free motion. Preload C eliminates the slop a lighter grade would show, and the stainless rail shrugs off the handling a test bench sees daily.
Is the Airtac LRM Miniature Linear Guide LRM12N2X120S10CH the Right Guide?
If the load becomes substantial or hangs off a cantilever, move up to LSH - that series publishes per-carriage dynamic, static and moment ratings you can actually size against, which LRM does not. For very short travel where crossed-roller rigidity matters more than stroke, LGC is the closer match. Before ordering, work the checklist: form (this is a complete set), 12 mm rail width, standard carriage length, two blocks, 120 mm rail, preload C with the trade-off that it drags harder over imperfect mounting surfaces, accuracy H, top-mount direction, and no pairing code needed since carriages ship on the rail. Confirm the load rating with us before committing.
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 LRM12N2X120S10CH FAQ
Rail width 12 mm, rail length 120 mm, two standard-length carriages, preload C (medium), accuracy grade H (high), top-mount rail. Mounting screws: M2 torques to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 to 196, 127 and 98 N.cm respectively. Ambient temperature must not exceed 80 C with transient peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months, whichever comes first, with a grease compatible with the factory-filled Kyodo Yushi PS No. 2. Load and moment ratings are not published for LRM - we confirm them for this exact model via the RFQ.
A complete set: the 120 mm stainless rail with both carriages already fitted, pre-filled with grease. The ball-retention design keeps the balls captive during normal handling, but angling a carriage onto a rail or swapping one hastily can still drop balls - use a dummy rail if you plan frequent swaps. Spare carriages for LRM12 are a special order in most cases, since our carriage-only stock is very thin, so factor that into any maintenance plan.
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 LRM12N2X120S10CH
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.