Airtac LRM Miniature Linear Guide LRM12N3X280S15AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N3X280S15AH 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 length280 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 LRM12N3X280S15AH
LRM12N3X280S15AH is a top-mount miniature guide set built around a 280 mm stainless-steel rail, 12 mm wide, with three standard-length ball carriages and a 15 mm end-hole offset. Preload is A (none) and accuracy is H (high). The set arrives complete: rail plus the three carriages already fitted to it.
Across our stocked LRM range the price spread comes almost entirely from rail length and carriage count rather than the 12 mm width, so trimming travel trims cost - worth checking before you fix a 280 mm stroke in the design. Handle the set with care: the ball-retention design helps, but dropping the rail or fitting a carriage at an angle can still shed balls and spoil accuracy with no visible marks. The carriage balls are Japanese ISO 3290 G10 grade, a double-lip seal and outer cover protect the raceway, and ambient temperature must not exceed 80 C. LRM load ratings are confirmed per model rather than published - send us the RFQ and we will return the figures for this exact set.
Airtac LRM Miniature Linear Guide LRM12N3X280S15AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N3X280S15AH |
|---|---|
| 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 | 280 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 LRM12N3X280S15AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 3X280 | 3 carriages on a 280 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, 280 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 LRM12N3X280S15AH Is Used
Machine-vision camera traverse
A compact vision camera riding a short rail over a bottling line needs repeatable, smooth travel in a tight space; this 280 mm three-block set carries the camera bracket and keeps the optical axis steady across the full stroke.
Wire and cable test traverse
In a cable test bench, a probe carriage travels repeatedly along the sample. The 12 mm top-mount rail suits a slim probe beam, and the triple-block layout resists pitching as the probe moves down the wire.
Connector test fixture slide
On a high-cycle connector test fixture, a sliding probe plate cycles continuously. Preload A lets it glide freely by hand or actuator, and at fast cycle rates the 100 km re-grease point arrives quickly, so schedule the interval.
Is the Airtac LRM Miniature Linear Guide LRM12N3X280S15AH the Right Guide?
Size this guide by travel first, not by width: in our stocked LRM range, rail length and block count drive the price far more than the 12 mm rail size does. If the application carries a substantial or cantilevered load, move up to LSH, whose published dynamic, static and moment ratings let you size properly - LRM offers no such table. For short-travel jobs needing crossed-roller rigidity, LGC is the cross-series alternative. Checklist for this SKU: complete set, 12 mm width, standard carriage, three blocks, 280 mm rail, 15 mm end offset, preload A (none), H accuracy, top-mount fixing. Confirm the load rating with us before ordering - we return the figures per model via the RFQ.
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 LRM12N3X280S15AH FAQ
Confirmed specifications: 12 mm rail width, 280 mm rail length, 15 mm end-hole offset, three standard carriages, preload A (none), H high accuracy, top-mount rail. Torque the M2 screws to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 screws to 196, 127 and 98 N.cm. Ambient limit is 80 C, peaking no higher than 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Dynamic load, static load and moment ratings are deliberately absent from the LRM catalogue - send the RFQ and we confirm them for this exact set.
The box holds one stainless rail, 280 mm long and 12 mm wide, with all three standard carriages mounted on it - a working guide, not a kit of parts. Handle it level: the carriage can slide off an inclined rail under its own weight, and knocking or dropping the rail can impair accuracy with no visible damage. The ball-retention design reduces, but does not eliminate, dropped balls if a carriage is removed hastily. Store spare sets flat, coated with rust-preventive oil and sealed away from heat and humidity.
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 LRM12N3X280S15AH
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.