Airtac LRM Miniature Linear Guide LRM12N1X320S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X320S10BHT 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 lengthStandard carriage
- Carriages1
- Rail length320 mm
- AccuracyH — high grade
- PreloadB — light 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 LRM12N1X320S10BHT
This is a complete LRM12 miniature linear guide set: one stainless-steel rail, 320 mm long and 12 mm wide, carrying a single standard-length recirculating-ball carriage. AirTAC supplies the carriage seated on the rail and pre-filled with grease, ready to bolt down. The S10 code fixes the end hole offset at 10 mm, and the trailing T means the rail mounts from below, so the fixing screws sit underneath and leave the running surface unobstructed.
The light preload (grade B) trims internal clearance for steadier travel without the drag a heavier grade would add. Inside the carriage, Japanese-made balls rated ISO 3290 G10 run in raceways held by a ball-retention design, so ordinary handling will not shed them, though inserting the carriage at an angle or rushing a swap can still drop one, so work carefully. A double-lip seal scrapes oil and excludes dust, an outer cover shields the seal strip from larger debris, and the common-rail profile means other LRM12 carriages can ride this same rail. Ambient temperature must stay at or below 80 C. AirTAC publishes no load or moment rating for LRM; the figure for this exact set is confirmed per model before you order - send the RFQ and we will provide it.
Airtac LRM Miniature Linear Guide LRM12N1X320S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X320S10BHT |
|---|---|
| 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 | 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 | B — light 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 LRM12N1X320S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X320 | 1 carriage on a 320 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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 LRM12N1X320S10BHT Is Used
AOI camera slide
A bottom-mount rail lets an automated optical inspection camera travel across a PCB panel with no screw heads proud of the surface to catch the board edge.
Micro-syringe pump carrier
Light preload keeps the push-force low on a laboratory syringe pump platen, so a small stepper drives it smoothly without stalling at each reversal.
Micro-dispensing head slide
In electronics assembly, a 320 mm rail gives a fluid dispensing head a long, even stroke across test panels, while the double-lip seal resists flux dust.
Is the Airtac LRM Miniature Linear Guide LRM12N1X320S10BHT the Right Guide?
Rail length and carriage count, far more than rail width, drive the price spread across this range, so trimming travel before upsizing is the cheaper path - a 320 mm length at 12 mm width sits in the most widely held part of the range. If your load is substantial or hangs on a cantilever, step up to AirTAC LSH: that series publishes per-carriage dynamic, static and moment ratings you can check against a calculation, which LRM does not. If travel is short and crossed-roller rigidity is the priority, LGC is the closer match. Before ordering, tick the checklist: complete set versus carriage only, 12 mm rail width, standard carriage length, one carriage, 320 mm rail, light preload B (smoother but slightly less stiff than C), accuracy grade H, bottom-mount direction - and confirm the load rating with us for this specific model.
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 LRM12N1X320S10BHT FAQ
Rail width 12 mm, rail length 320 mm, one standard-length carriage, preload grade B (light), accuracy grade H (high), bottom-mount rail with a 10 mm end-hole offset. Fixing torque: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm respectively. Re-grease every 100 km of travel or every 3 to 6 months, and keep ambient temperature at or below 80 C. Load and moment ratings are not published for LRM - we confirm the figures for this exact model on request.
Yes - LRM12N1X320S10BHT is a complete set: rail and one greased standard carriage, supplied assembled. Because the rail fastens from below, drill your clearance holes before offering it up. The ball-retention design holds the balls during normal handling, but do not tilt the carriage off quickly; if you expect to swap carriages in the field, a dummy rail makes the job safer, and note that our carriage-only range is small, so a spare is usually a special order.
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 LRM12N1X320S10BHT
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.