Airtac LRM Miniature Linear Guide LRM12L1X320S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X320S10CHT 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
- PreloadC — medium 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 LRM12L1X320S10CHT
Order LRM12L1X320S10CHT and you receive a complete miniature guide in one piece: a 12 mm stainless-steel rail 320 mm long with a single long carriage already on it. The T at the end of the code selects bottom mounting - the rail is secured from below through its base, which suits frames and enclosures where the upper face must carry guarding, workpiece or optics rather than screw heads.
With medium preload C the carriage runs tight and stiff, though it asks more of the mounting surface: grind or finish-mill the seat to achieve the rated travel accuracy, and if a second rail runs alongside, put both datum faces on the same side for better running accuracy. Inside, the double-lip seal scrapes oil and excludes dust while an outer cover shields the seal strip; the recirculating elements themselves are Japanese ISO 3290 G10 grade balls. Watch two practical points: on an inclined rail the carriage can slide off under its own weight, so hold it during fitting, and ambient temperature must stay within 80 C, peaking no higher than 100 C - a real constraint beside a heater or laser head. Load and moment figures are not published for LRM; request the RFQ and we confirm them for this model.
Airtac LRM Miniature Linear Guide LRM12L1X320S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X320S10CHT |
|---|---|
| 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 | C — medium 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 LRM12L1X320S10CHT
| 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. |
| C | C — medium 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 LRM12L1X320S10CHT Is Used
Semiconductor test socket actuator
A small vertical actuator pressing contactors onto chip packages needs a stiff, compact guide; bottom-mount fixing keeps the rail hidden beneath the fixture plate while preload C limits play.
Laser module focus slide
Adjusting a compact laser head along its optical axis is smooth work for a 12 mm miniature guide, and the published 80 C ambient limit tells you to route the beam's heat away from the slide.
Compact dispensing head carriage
A micro-dispensing jet carried on a long carriage travels a repeatable line over a substrate; the extended block length helps the head stay level as it moves between dots.
Is the Airtac LRM Miniature Linear Guide LRM12L1X320S10CHT the Right Guide?
Heavy or cantilevered loads belong on LSH, where per-carriage dynamic, static and moment ratings are published and you can calculate margins properly; LRM has no such table, which is why we confirm each model by enquiry. Short-travel jobs needing crossed-roller rigidity point to LGC. Locking in this set means confirming: set form, 12 mm rail width, long carriage, one block per 320 mm rail, preload C (rigid but less forgiving of surface finish), accuracy H, bottom-mount direction. Also plan the re-grease schedule now - 100 km of travel arrives faster than it sounds, since a 200 mm stroke cycling once a second covers 100 km in roughly three weeks of continuous running. Send us the duty cycle and we will confirm both the load rating and the right top-up routine.
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 LRM12L1X320S10CHT FAQ
Rail: 12 mm wide, 320 mm long, drilled for bottom mounting. Carriage: one, long pattern, medium preload C, accuracy grade H. Fixing torque: M2 at 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 at 196, 127 and 98 N.cm. Environment: 80 C maximum ambient, 100 C transient. Lubrication: Kyodo Yushi PS No. 2 fitted at the factory, topped up every 100 km or every 3 to 6 months. What is deliberately absent is any published load or moment rating for LRM - we verify those per model, so include this SKU in an RFQ and we will return the confirmed figures.
If the block must carry a substantial load or a cantilevered arm, LSH is the better engineering choice because its datasheet publishes dynamic, static and moment ratings per carriage - numbers you can put into a calculation. LRM offers no such table, so sizing becomes a conversation with us rather than a lookup. LRM's strengths are the tight 12 mm envelope, smooth light-duty motion and, on this code, a long carriage plus medium preload C for added stability; for very short travels where crossed-roller rigidity matters, LGC is worth a look as well. Tell us the load and we will confirm whether this model carries it.
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 LRM12L1X320S10CHT
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.