Airtac LRM Miniature Linear Guide LRM12L2X120S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X120S10AP 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 length120 mm
- AccuracyP — precision grade
- PreloadA — no 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 LRM12L2X120S10AP
LRM12L2X120S10AP is a complete AirTAC LRM miniature linear guide: a single stainless-steel rail, 12 mm wide and 120 mm long, fitted with two long-body recirculating-ball carriages. Nothing else is needed - the set arrives assembled, pre-greased and ready to bolt to a prepared surface, with fixing holes set 10 mm in from each rail end and mounting from the top.
This is the precision-grade (P) version with preload A, meaning no preload at all: the freest-running combination in the range, chosen where low friction matters more than stiffness. Because both carriages are the long L body, each spreads its ball complement over a longer footprint, which steadies a platform against tipping in pitch. Design points: LRM carriages share one common rail profile, the recirculating balls are Japanese-made ISO 3290 G10 grade (that grade covers the balls only, not the guide), a double-lip seal scrapes oil back and excludes dust, and an outer cover keeps larger debris off the seal strip. Ball retention keeps the balls in the carriage during handling, but a tilted or hurried fit can still drop one - work carefully or use a dummy rail. Keep ambient temperature at or below 80 C, the one environmental limit the catalogue states outright. AirTAC publishes no load or moment rating for LRM; we confirm the figures for this exact model before you order - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X120S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X120S10AP |
|---|---|
| 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 | 120 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | A — no 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 LRM12L2X120S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X120 | 2 carriages on a 120 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no 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, 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 LRM12L2X120S10AP Is Used
Optics inspection carriage
A compact inspection-microscope stage that indexes a sample under the lens: precision-grade running accuracy and a free-running, non-preloaded slide keep the image steady and the motion repeatable.
Small SMT pick-and-place head
A desktop pick-and-place gantry guiding a suction head over a PCB: two long carriages on one rail resist tipping as the head reaches out, and the 12 mm rail fits a tight footprint.
Laser alignment slide
A laser-module alignment fixture in a production lab: with no preload there is minimal stick-slip when the beam is trimmed by hand, and the stainless rail tolerates a regular wipe-down.
Is the Airtac LRM Miniature Linear Guide LRM12L2X120S10AP the Right Guide?
Size against ratings, not against the size code. If your load is substantial, overhung or shock-prone, step up to AirTAC LSH: that series publishes basic dynamic, static and per-carriage moment ratings you can actually calculate with, which LRM does not. If travel is short and the job demands crossed-roller rigidity instead of ball smoothness, LGC is the cross-over choice. LRM earns its place where the envelope is small and the motion must be precise.
Before ordering, tick off: form (this is a complete set), rail width 12 mm, long carriage, two of them, 120 mm rail, preload A (none - freest running, least stiff), accuracy P (precision), top-mount rail, and - most important - the load rating confirmed with us for this exact SKU. LRM12 is the depth of our stock: 924 of the 988 stocked sets, so a 12 mm design ships fastest.
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 LRM12L2X120S10AP FAQ
It is one 12 mm wide stainless-steel rail, 120 mm long, with two long-body carriages, top-mounted, accuracy P (precision), preload A (none), fixing holes 10 mm from the rail ends. M2 mounting screws torque to 58.8 N.cm in steel, 39.2 in cast iron and 29.4 in aluminium; M3 to 196, 127 and 98 N.cm respectively. Ambient temperature must not exceed 80 C, with brief peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months through the rear lubrication hole. Load and moment ratings are not published for LRM; we confirm them per model before you order.
Everything is in the box: rail and both carriages, assembled and pre-filled with Kyodo Yushi PS No. 2 grease. No separate rail or block order is needed. If you later want a spare carriage, note that LRM carriages and rails are matched by a pairing code, carriage-only stock is very thin, and a replacement is usually a special order - keep the code off your original carriage.
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 LRM12L2X120S10AP
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.