Airtac LRM Miniature Linear Guide LRM12N1X120S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X120S10BH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- 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 LRM12N1X120S10BH
The LRM12N1X120S10BH is a complete AirTAC LRM miniature linear guide in one package: a single 120 mm rail, 12 mm wide and made of stainless steel, supplied with one standard-length recirculating-ball carriage already fitted and riding on it. Preload grade B (light) and accuracy grade H (high) are built in, and the rail is fixed from the top through its mounting holes.
Light preload B is the free-running option in the LRM range - the carriage moves with minimal breakaway force, which suits small motors and direct-drive slides, while accepting slightly more play than the stiffer grade C. Inside the carriage, the circulating balls are ISO 3290 G10 grade and Japanese made - a grade that applies to the balls alone, not to the guide as an assembly. A double-lip seal scrapes lubricant back and shuts out dust, and the outer cover shields the seal strip from larger debris while hiding the fixing screws. Ball retention holds the balls captive during normal handling, though the manufacturer warns that offering the carriage to the rail at an angle or swapping it in haste can still drop balls, so work slowly or use a dummy rail. Keep the ambient temperature at or below 80 C, with brief peaks no higher than 100 C. Load and moment ratings are not published for the LRM series; we confirm the figures for your specific model before ordering - just send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X120S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X120S10BH |
|---|---|
| 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 | 1 |
| 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 LRM12N1X120S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X120 | 1 carriage 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, 1 |
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 LRM12N1X120S10BH Is Used
Compact XY micro-stage
A benchtop laser-marking XY stage built around a 120 mm stroke uses this set on each axis; the light preload keeps small stepping motors from stalling at low feed rates.
SMD placement head slide
In a small electronics assembly machine, the component pick-up head rides a short miniature rail where a 12 mm profile is all the frame allows.
Laboratory dosing arm
A microplate dosing arm in an analytical lab moves a lightweight probe back and forth all day; grade H accuracy keeps the tip tracking true over the well layout.
Is the Airtac LRM Miniature Linear Guide LRM12N1X120S10BH the Right Guide?
Pick LRM when the envelope is tight, the duty is light and smooth low-friction travel matters more than raw capacity. If the load is heavy or hangs on a cantilever, step up to the LSH series instead: LSH publishes dynamic, static and moment ratings per carriage that you can plug straight into a sizing calculation, which LRM cannot offer. Where the travel is short but the structure must be very rigid, crossed-roller LGC is the better match. Run through the checklist before you commit: set or carriage-only form, 12 mm rail width, standard or long carriage, block count, 120 mm rail length, preload grade (B runs easiest, C trades smoothness for stiffness), H or P accuracy, top- or bottom-mount fixing - and confirm the load rating with us first. Availability is on your side here: LRM12 accounts for 924 of the 988 LRM sets we stock, so this size ships faster than any other in the range.
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 LRM12N1X120S10BH FAQ
It is a complete set: a 12 mm wide stainless-steel rail, 120 mm long, carrying one standard-length carriage, fixed from the top, with preload grade B (light) and accuracy grade H (high). M3 fixing screws torque to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium; for M2 use 58.8, 39.2 and 29.4 N.cm respectively. The 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, whichever comes first. Basic dynamic load, static load and moment ratings are not published for LRM - we confirm them for this exact model through an RFQ.
Decide by whether you need published numbers to design against. LSH publishes per-carriage dynamic load, static load and moment ratings, so you can verify capacity on paper; LRM publishes none, so its load capacity is confirmed per model with us before you order. Choose LRM for tight envelopes, light loads and smooth travel like this 12 mm set; choose LSH when the load is substantial or cantilevered. For short travel where crossed-roller rigidity wins, look at LGC instead.
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 LRM12N1X120S10BH
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.