Airtac LRM Miniature Linear Guide LRM12N1X320S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X320S10BH 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 LRM12N1X320S10BH
Light preload is the point of this set. In LRM12N1X320S10BH the B suffix selects preload grade B, the middle option between none and the firm C grade: enough internal tension to settle out play and steady the motion, while keeping running drag low for a small motor. You get a 12 mm wide stainless-steel rail, 320 mm of it, with one standard-length carriage mounted from above.
The carriage ships greased with Kyodo Yushi PS No. 2, and topping up is due at 100 km of travel or every 3 to 6 months, whichever comes first - a shorter interval than it sounds, since a 200 mm stroke cycling once a second covers 100 km in roughly three weeks of continuous running. The balls are ISO 3290 G10 grade, which describes the balls alone and not the accuracy of the guide as built. Ambient temperature must not exceed 80 C, with peaks to 100 C. Because AirTAC publishes no load or moment ratings for LRM, we verify the figures for this exact configuration before you order - request them through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X320S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X320S10BH |
|---|---|
| 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 |
| 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 LRM12N1X320S10BH
| 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 LRM12N1X320S10BH Is Used
Desktop engraving slide
A small engraver or plotter carriage travelling a 200 to 300 mm stroke benefits from preload B: no visible play in the tool path, yet the motor is not fighting excess stiction.
HPLC autosampler
An autosampler arm picks vials on a fixed rhythm all day. Light preload keeps the pick position repeatable, and the 100 km re-grease interval is the honest design limit at these cycle rates.
Vision inspection gantry
A machine-vision camera riding over a conveyor needs a light, smooth guide underneath; preload B removes wobble in the image without overloading a small stepper.
Is the Airtac LRM Miniature Linear Guide LRM12N1X320S10BH the Right Guide?
When the application carries real weight or an overhang, step up to LSH - its catalogue gives you dynamic, static and moment ratings per carriage to size from, data LRM simply does not publish, so ask us to confirm this LRM set instead. Short travel with a demand for crossed-roller rigidity points across to LGC. Tick through the match list: complete set, 12 mm rail width, standard carriage, one carriage, 320 mm rail length, preload B (the installation trade-off: smoother running than C, slightly more internal play), accuracy H, top-mount, and our confirmed load rating before you build it in.
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 LRM12N1X320S10BH FAQ
Configuration: 12 mm rail width, 320 mm rail, single standard carriage, preload B, accuracy H, top-mount, end holes 10 mm from the ends. The mounting surface should be ground or finish-milled to hold rated travel accuracy. M2 screws take 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminum; M3 takes 196, 127 and 98 N.cm. Ambient temperature must stay at or below 80 C with peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. LRM has no published load or moment ratings - we confirm the figures for this part before you order.
The ball-retention design stops the balls falling out during normal handling, but it is a help, not a guarantee: fitting the carriage at an angle or pulling it off quickly can still drop balls, so work slowly or use a dummy rail. Replacement carriages alone are a special order for most configurations because carriage-only stock is thin, and a carriage-only code needs a pairing letter (A to E) matching the rail. Do not dismantle the carriage - missing balls and damaged raceways follow.
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 LRM12N1X320S10BH
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.