Airtac LRM Miniature Linear Guide LRM12N2X210S5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X210S5AH 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 length210 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 LRM12N2X210S5AH
LRM12N2X210S5AH is a complete set from AirTAC's LRM miniature range: one 12 mm stainless-steel rail, 210 mm long, with its outer fixing holes just 5 mm in from the rail ends, and two standard-length recirculating-ball carriages on top. The short 5 mm end offset pulls the outermost screws closer to the rail tips than the 12.5 mm variant - useful where the hole pattern on your base plate is already fixed.
Handling is where this series rewards care. Ball retention holds the ISO 3290 G10 Japanese-made balls captive, yet the maker still warns that sliding a carriage on at an angle or swapping it in haste can drop balls - a dummy rail makes carriage fitting safer. Do not strike the rail, even lightly; accuracy can suffer with no visible mark. The double-lip seal and outer cover guard the raceway between services, and the ambient limit is 80 C, peaking at 100 C. No load or moment rating is published for LRM; we confirm the figure for this model when you enquire, so include it in your RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X210S5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X210S5AH |
|---|---|
| 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 | 210 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 LRM12N2X210S5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X210 | 2 carriages on a 210 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, 210 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 LRM12N2X210S5AH Is Used
Lab instrument guide replacement
Retrofitting a smoother axis into an ageing analytical instrument, where the existing base-plate holes dictate the 5 mm end offset.
Fixture base-plate layout
Designing a small assembly fixture plate: outer screw positions 5 mm from the rail ends let the guide sit closer to the plate edge.
Dusty bench near a lapping station
The double-lip seal and outer cover give a measure of protection where fine abrasive dust drifts across a small positioning slide.
Is the Airtac LRM Miniature Linear Guide LRM12N2X210S5AH the Right Guide?
For loads that are substantial or overhung, LSH is the logical step up because it publishes per-carriage dynamic, static and moment ratings you can calculate against; LRM keeps its figures off the page, and we confirm them per model. Where travel is short and crossed-roller rigidity is the priority, LGC fits better.
Before ordering, check off: complete set form, 12 mm rail width, two standard carriages, 210 mm rail length, preload A (none - the easiest grade to install, with the most free play), accuracy H, top-mount mounting, and the 5 mm end-hole offset checked against your base-plate hole pattern. Then confirm the load rating with us.
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 LRM12N2X210S5AH FAQ
Published figures: 12 mm rail width, 210 mm rail length, two standard-length carriages, top-mount rail, fixing holes 5 mm from the ends, preload grade A (none), accuracy grade H. Mounting torque for M3 screws is 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. The carriages are greased with Kyodo Yushi PS No. 2 at the factory; re-grease after every 100 km of travel or every 3 to 6 months. Keep the surroundings at or below 80 C. Load and moment ratings are deliberately absent from the LRM catalogue; we confirm them for this model before you commit.
Yes - LRM12N2X210S5AH is a complete set: one rail plus both carriages, assembled and matched. It is not a carriage-only part. If you later need a replacement carriage, note that AirTAC carriage-only codes carry a pairing letter that must match the rail, and you would read that letter off the original part. Carriage-only listings are scarce in our range, so most spare carriages arrive as a special order; the manufacturer also recommends a dummy rail for safe refitting.
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 LRM12N2X210S5AH
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.