Airtac LRM Miniature Linear Guide LRM12N2X120S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X120S10CPT 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
- AccuracyP — precision 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 LRM12N2X120S10CPT
This is the precision-grade, underside-fixed version of the compact LRM12 pair: the LRM12N2X120S10CPT combines a 120 mm stainless-steel rail, 12 mm wide, with two standard carriages, and the trailing T codes a bottom-mount rail whose screw holes accept fasteners driven from below - the top face stays clear, which matters when the guide sits inside a channel or hangs beneath a plate.
Plan the lubrication honestly: the carriages leave the factory charged with Kyodo Yushi PS No. 2, and re-greasing is due every 100 km of travel or every 3 to 6 months. On a short 120 mm axis that cycles continuously, the distance figure arrives first - a 200 mm stroke at one cycle per second covers 100 km in roughly three weeks - so service access through the lubrication hole at the rear of each carriage belongs in your layout from day one. The balls are Japanese-made, graded ISO 3290 G10 - that grade describes the balls alone. Preload C plus precision accuracy gives the firmest, truest running combination LRM offers; grind or finish-mill the mounting face so the grade means something. Ambient stays below 80 C, peaks 100 C. Load and moment ratings are not published for this series - send the RFQ and we confirm them per model.
Airtac LRM Miniature Linear Guide LRM12N2X120S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X120S10CPT |
|---|---|
| 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 (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12N2X120S10CPT
| 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. |
| 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 LRM12N2X120S10CPT Is Used
Fiber-optic connector polishing fixture
Polishing ferrule ends to a domed finish needs the holder to sweep a short, dead-straight path. Precision accuracy and preload C give the repeatable stroke, and bottom mounting recesses the 12 mm rail inside the polishing jig base where coolant and slurry splash cannot reach the screw heads.
Pharmaceutical vial sorting module
A benchtop sorter nudging vials between lanes fits a 120 mm axis neatly. The underside-fixed rail keeps the top deck flush for easy cleaning between batches, and the stainless rail suits the frequent wipe-downs of a pharma bench.
Micro-fastener torque test bench
Driving miniature screws to a set torque while measuring extraction force needs a slide that will not rock. Twin carriages resist the tipping component along the travel, and the medium preload holds the test head at its set position between runs.
Is the Airtac LRM Miniature Linear Guide LRM12N2X120S10CPT the Right Guide?
Size up to LSH whenever the load is heavy for the envelope or applied on a cantilever - LSH publishes per-carriage dynamic, static and moment ratings, and LRM does not, so there is no honest way to size LRM against a calculated load without asking us. For very short travel where crossed-roller rigidity wins, compare LGC. Checklist for this unit: complete-set form, 12 mm rail width, standard carriage length, two blocks, 120 mm rail, preload C (stiff but draggier and less forgiving of surface error), P accuracy, bottom-mount direction. Sets carry no pairing code. Confirm the load rating with us before ordering.
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 LRM12N2X120S10CPT FAQ
Rail width 12 mm, rail length 120 mm, carriage length standard, two carriages per rail, preload C (medium), accuracy P (precision), bottom-mount rail. Torque figures: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm. Ambient temperature limit 80 C with peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months, whichever binds first. Load and moment ratings are not published for LRM - submit the RFQ and we confirm the figures for this exact model.
Grind or finish-mill the mounting surface so the precision grade is realised; either side of the rail can be the datum, but with two carriages keep the datum referenced on the same side for better running accuracy. Fasten the rail with screws driven from below, torqued per the figures above. Wipe the rust-preventive oil off before first use and apply lubricant; top up through the hole at the rear of each carriage by stroking it and injecting until an even film shows. Never mix grease types, never dismantle a carriage, and never strike the rail - hidden damage still costs accuracy. Handling note: on an inclined rail the carriage can slide under its own weight, so hold it.
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 LRM12N2X120S10CPT
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.