Airtac LRM Miniature Linear Guide LRM12L1X420S10AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X420S10AH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length420 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 LRM12L1X420S10AH
LRM12L1X420S10AH delivers a 420 mm stainless-steel rail, 12 mm wide, with one long LRM12 carriage fitted and greased with Kyodo Yushi PS No. 2, bolted down from the top. Preload grade A means the carriage is set free of preload, so breakaway force is at its lowest and the motion feels light from the first stroke.
Without preload the guide runs easiest, which suits axes driven gently or adjusted by hand, though expect a little more play than a B or C grade would show. Accuracy grade H is the high grade, and the mounting surface still needs grinding or finish milling for the rated travel accuracy. Japanese ISO 3290 G10 balls recirculate inside the carriage, held by the retention design and sealed by the double-lip seal, with the outer cover shielding the strip from larger debris. The ambient temperature ceiling is 80 C with transient peaks to 100 C. Load and moment ratings are not published for this series, so we confirm them for this exact configuration when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X420S10AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X420S10AH |
|---|---|
| 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 | 1 |
| Rail length | 420 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 LRM12L1X420S10AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X420 | 1 carriage 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 420 mm |
| Carriage | Yes, 1 |
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 LRM12L1X420S10AH Is Used
Desktop laser engraver
A 420 mm travel axis under a small laser module benefits from the longest stocked carriage format, with no preload keeping the motion easy for a light drive.
Automated pipetting slide
A lab robot moving a pipetting head between wells runs smoothly and quietly on the free-running grade A carriage, with high accuracy keeping the tip paths repeatable.
Camera inspection rail
An operator sliding a camera along a row of machined parts feels almost no breakaway resistance, making fine manual framing simple along the full 420 mm.
Is the Airtac LRM Miniature Linear Guide LRM12L1X420S10AH the Right Guide?
Let the load decide the series. A substantial or cantilevered load belongs on LSH, which publishes dynamic, static and moment ratings per carriage that LRM lacks; a short stroke needing crossed-roller stiffness belongs on LGC. For this configuration, verify: complete set, 12 mm rail width, long carriage, one carriage, 420 mm rail, preload A (free-running, with a little more play than B or C), accuracy H, top-mount fixing, and a load rating confirmed with us. Cost note: our stocked LRM sets run from about $66 to $831 across only two rail widths, so rail length, not size, drives most of the price - trim travel before upsizing the series.
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 LRM12L1X420S10AH FAQ
Rail width 12 mm on a 420 mm stainless rail, one long carriage, preload A (none), accuracy grade H, top-mount mounting. Screw torque for installation: M2 at 58.8 N.cm into steel (39.2 cast iron, 29.4 aluminium), M3 at 196 N.cm into steel (127 cast iron, 98 aluminium). Ambient temperature limit 80 C, transient peaks 100 C; re-grease every 100 km of travel or every 3 to 6 months, without mixing lubricant types. Load and moment ratings are not published for LRM - we confirm them per model, so include your load case in the RFQ.
The AirTAC LRM catalogue publishes no dynamic, static or moment ratings, and no figures are shared with the larger LSH series, so nothing here is scaled or borrowed from another table. That is why we confirm the rating for this exact model through the RFQ instead of quoting a number we cannot stand behind. If you need published values to calculate against today, LSH is the series with the full per-carriage table, and LGC covers short-stroke crossed-roller work. This 420 mm, long-carriage set remains the right pick when tight space, precision and smooth running outrank a published rating.
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 LRM12L1X420S10AH
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.