Airtac LRM Miniature Linear Guide LRM12N3X220S10AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N3X220S10AH 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
- Carriages3
- Rail length220 mm
- AccuracyH — high 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 LRM12N3X220S10AH
The LRM12N3X220S10AH ships as a full kit: a stainless-steel rail 220 mm long and 12 mm wide, carrying three standard recirculating-ball carriages, mounted from above, accuracy grade H and no preload. The S10 segment in the code fixes the end-hole offset at 10 mm, which determines where the first mounting holes sit relative to the rail ends - useful for matching an existing hole pattern.
Availability is the quiet advantage here: 924 of the 988 LRM sets we stock are size 12, and the 220 mm length sits inside a stocked range running from 40 mm to 995 mm across 102 distinct lengths, so this configuration typically leaves the shelf rather than the factory. The carriages run on Japanese-made balls graded ISO 3290 G10 - a grade that covers the balls only - behind a double-lip seal, with an outer cover keeping debris off the seal strip. Ambient temperature is limited to 80 C with transient peaks of 100 C. The factory fill is Kyodo Yushi PS No. 2; top up through the lubrication hole at the rear of the carriage by stroking it back and forth and injecting from one side until an even film shows on the rail. Load and moment ratings are not published for the series; we confirm them per model, so include the duty in your RFQ.
Airtac LRM Miniature Linear Guide LRM12N3X220S10AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N3X220S10AH |
|---|---|
| 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 | 3 |
| Rail length | 220 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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 LRM12N3X220S10AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 3X220 | 3 carriages on a 220 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 220 mm |
| Carriage | Yes, 3 |
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 LRM12N3X220S10AH Is Used
High-cycle labelling head guide
A desktop labelling machine swinging its applicator over short batches of vials can run on this three-carriage 220 mm axis; spare carriages are easy to plan for, since standard and long carriages are stocked almost evenly in size 12.
Small-part sorting gate slide
A sorting gate that slides to redirect small components between bins can ride on this compact set, with three carriages giving the gate plate several fixing points along the 220 mm rail.
PCB test cradle slide
A bench fixture that slides populated circuit boards under a bed-of-nails tester can carry the cradle on this 220 mm rail, with the three-carriage layout letting the designer bolt the cradle at matched points.
Is the Airtac LRM Miniature Linear Guide LRM12N3X220S10AH the Right Guide?
If the load is more than light duty, or it overhangs the carriage, step up to AirTAC LSH, which publishes per-carriage dynamic, static and moment ratings you can plug straight into a sizing calculation - something LRM does not offer. When the travel is short and stiffness matters more than stroke, LGC and its crossed-roller construction are the alternative to weigh. Confirm every parameter before ordering: this is a complete set with the rail included, 12 mm rail width, standard carriage length, three carriages, 220 mm rail, 10 mm end-hole offset, preload A (easy to assemble, lowest rigidity), accuracy H and top-mount fixing. Ask us to confirm the load rating for this model as the final step.
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 LRM12N3X220S10AH FAQ
12 mm rail width, 220 mm rail length, three standard carriages, preload A (none), accuracy H (high), top-mount rail and a 10 mm end-hole offset. For storage, coat the guide with rust-preventive oil, seal it in the specified bag and lay it flat away from heat and humidity. The ambient limit is 80 C (peaks to 100 C); re-grease every 100 km of travel or every 3 to 6 months using a single lubricant type. M3 screw torque: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Dynamic, static and moment load ratings are not published for LRM; we confirm the figures for this exact model when you enquire.
Yes - the LRM12N3X220S10AH is a complete set, so the 220 mm stainless rail and all three carriages arrive together, greased and ready to bolt down. The box contains no mounting screws, no load table and no black-chrome finish - that option exists to order, not from stock. Neither AirTAC nor our datasheets list dynamic, static or moment ratings for LRM, so send your load, moment and duty details in the RFQ and we will confirm capacity for this model before you commit.
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 LRM12N3X220S10AH
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.