Airtac LRM Miniature Linear Guide LRM12L1X320S10AHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X320S10AHT 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 length320 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 LRM12L1X320S10AHT
The trailing T in LRM12L1X320S10AHT marks a bottom-mount rail: the holes are arranged so you fasten the rail down from beneath, which answers the case where the top face of your slide must stay clear or the screws are simply unreachable from above. You receive one 320 mm, 12 mm wide stainless-steel rail with a single long recirculating-ball carriage, preassembled and greased.
Handling deserves care here: on an inclined rail the carriage can slide off under its own weight, so hold it during fitting, and never strike or drop the rail - hidden damage still shows up as lost accuracy. The ISO 3290 G10 balls (a ball grade only, not a standard for the assembled guide) are held by the retainer; the double-lip seal scrapes oil back and shuts out dust beneath the outer cover. Ambient limit is 80 C with brief peaks to 100 C. Load and moment ratings are absent from the LRM catalogue, so request confirmation for this bottom-mount set through the RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X320S10AHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X320S10AHT |
|---|---|
| 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 | 320 mm (spliced sections) |
| 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 LRM12L1X320S10AHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X320 | 1 carriage on a 320 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, 320 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 LRM12L1X320S10AHT Is Used
Under-plate guiding on a granite inspection base
Bolting from below leaves the top of the plate unbroken for workholding - exactly what a small coordinate checking fixture on a granite surface plate wants.
Probe-station X axis in a wafer lab
Light-duty probing of small dies suits the high accuracy grade and the low drag of preload A; keep the lab environment under the 80 C ambient limit.
Auto-focus slide of a machine-vision camera
Tuning a camera's focal distance under program control; the double-lip seal helps keep cleaning-solvent mist out of the raceways in a production cell.
Is the Airtac LRM Miniature Linear Guide LRM12L1X320S10AHT the Right Guide?
If your duty involves real load or a moment arm, choose LSH, which publishes the per-carriage dynamic, static and moment data that LRM withholds. For very short travels wanting crossed-roller rigidity, LGC fits better. This code reads as: complete set, 12 mm rail, long carriage, one block, 320 mm rail length, preload A (no preload - smoothest running, but the least grip against play), accuracy H, bottom-mount (T) rail. If you are replacing a lone carriage rather than buying a set, you need the BK carriage code and its matching pairing letter instead. Confirm the load rating with us for your specific duty before ordering.
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 LRM12L1X320S10AHT FAQ
Rail: stainless steel, 12 mm wide, 320 mm long, bottom-mount (T). Carriage: one, long (L) type, preload A (none), accuracy H, 10 mm end-hole offset. Screw torques: M2 - 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 - 196, 127, 98 N.cm. Ambient limit 80 C, brief peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months, never mixing lubricant types. Load and moment ratings are not published for LRM; we confirm them per model.
The T sets bottom-mount: you fasten the rail from underneath, useful when the slide's top face must stay clear. The set arrives as rail and carriage preassembled and filled with Kyodo Yushi PS No. 2 - wipe off the rust-preventive oil and re-lubricate before first use. Either long side of the rail can serve as the datum; with several carriages, keep all datums on the same side. Replacement carriages come only as BK codes with a pairing letter, and carriage-only stock is very limited, so plan a dummy rail for swaps and order early.
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 LRM12L1X320S10AHT
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.