Airtac LRM Miniature Linear Guide LRM12L2X420S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X420S10AP 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 length420 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 LRM12L2X420S10AP
LRM12L2X420S10AP is the precision-grade version of this complete set: a 12 mm wide stainless-steel rail, 420 mm long, with two long carriages mounted from above, no preload and accuracy grade P. P is the tighter of the two accuracy grades AirTAC offers on LRM, the choice when repeatability of position matters more than freest running.
Inside each long carriage the recirculating balls are ISO 3290 G10 grade, Japanese made, which keeps ball roundness consistent over the travel; the double-lip seal scrapes grease back into the raceway and shuts out dust, while the outer cover protects the seal strip and hides the screw row. Each carriage ships pre-filled with Kyodo Yushi PS No. 2. Ambient temperature must stay at or below 80 C, with short peaks to 100 C - a real constraint next to curing lamps or hot plates. AirTAC states no load or moment rating for LRM, so treat capacity as confirmed per model: send the RFQ and we will return the figure for this exact code.
Airtac LRM Miniature Linear Guide LRM12L2X420S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X420S10AP |
|---|---|
| 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 | 420 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 LRM12L2X420S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X420 | 2 carriages on a 420 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, 420 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 LRM12L2X420S10AP Is Used
Fiber-optic coupling alignment stage
Walking a fiber chuck into alignment with a laser package, where grade P travel keeps the repeat position stable between adjustments.
Camera lens test bench
Racking a test lens back and forth on an MTF bench, where the long twin blocks resist pitch as the carriage nears the rail ends.
Small fastener driving test rig
Guiding the Z-axis of an electric screwdriver tester over a fixture, where two carriages on one rail keep the driver square to the screw.
Is the Airtac LRM Miniature Linear Guide LRM12L2X420S10AP the Right Guide?
When the load is substantial or overhung, size with AirTAC LSH instead - it publishes per-carriage dynamic, static and moment ratings, which LRM does not, so LSH lets you do a real calculation. When travel is short and the job wants crossed-roller rigidity, look across to LGC. For this set, confirm each choice before ordering: complete set form, 12 mm rail width, long carriage, two carriages on 420 mm of rail, preload A (freest running; C would be stiffer but less forgiving on a merely milled surface), accuracy P, top-mount direction. Then let us confirm the load rating by RFQ. Also worth knowing: within LRM, price tracks rail length and carriage count far more than rail width, so trimming travel trims cost 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 LRM12L2X420S10AP FAQ
Specifications: 12 mm rail width, 420 mm rail length, two long carriages on one rail, preload A (none), accuracy grade P, top-mount rail, 10 mm end-hole offset, stainless-steel rail. M3 screws take 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. The ambient limit is 80 C, with transient peaks to 100 C, and re-greasing falls due every 100 km or 3 to 6 months. Load and moment ratings are not published for LRM - request them by RFQ and we confirm for this model.
H is high accuracy, P is precision - the tighter of the two grades offered. Both share the same rail profile, carriage lengths and seals; the difference is manufacturing tolerance, not load capacity. Two practical notes: spliced multi-section rails are supplied in grade H only, and neither grade changes the fact that AirTAC publishes no load or moment rating for LRM. We confirm the rating per model by RFQ. This set is grade P, top-mount, preload A, with two long carriages on a 420 mm, 12 mm wide rail.
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 LRM12L2X420S10AP
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.