Airtac LRM Miniature Linear Guide LRM12L1X445S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X445S10BHT 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 length445 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 LRM12L1X445S10BHT
The LRM12L1X445S10BHT is a complete miniature linear guide set: one 12 mm wide stainless-steel rail, 445 mm long, carrying a single long recirculating-ball carriage. The trailing T in the ordering code makes this a bottom-mount rail, so the fixing screws are driven from beneath the mounting surface and the top face stays clear for the moving deck. Preload grade B (light) and accuracy grade H (high) complete the configuration.
Inside the long carriage, a double-lip seal scrapes oil back and excludes dust, an outer cover shields the seal strip and hides the fixing screws, and the recirculating balls are Japanese-made and graded ISO 3290 G10 - a grade that applies to the balls alone, not to the guide as an assembly. The ball-retention design keeps balls captive during handling, but fitting the carriage at an angle or swapping it quickly can still drop balls, so keep a dummy rail to hand if carriage changes are routine. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C - worth checking if this rail runs near a heating element or lamp housing. AirTAC publishes no load or moment ratings for LRM, so we confirm the figures for this exact model with you before you order; send the RFQ and we will come back with the numbers.
Airtac LRM Miniature Linear Guide LRM12L1X445S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X445S10BHT |
|---|---|
| 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 | 445 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 LRM12L1X445S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X445 | 1 carriage on a 445 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, 445 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 LRM12L1X445S10BHT Is Used
Compact optical inspection stage
A measurement camera glides over a 445 mm rail fixed from below the breadboard, leaving the working surface unobstructed for fixtures and part clamps.
Laser diode alignment fixture
The long carriage extends the bearing span and resists the tipping component of a vertically mounted alignment head, while accuracy grade H holds repeatable positioning.
Semiconductor test-handler axis
A socket-loading slider rides the 12 mm rail in a tight machine envelope where screws can only be reached from the underside.
Is the Airtac LRM Miniature Linear Guide LRM12L1X445S10BHT the Right Guide?
Under-screwed access is the reason to pick this bottom-mount version, but size the mechanics first. If the load is substantial or hangs off a cantilever, step up to the larger LSH series, which publishes per-carriage dynamic, static and moment ratings you can calculate against - LRM publishes none of these, so we confirm each one individually. Where travel is short and crossed-roller rigidity beats stroke length, LGC is the sensible cross-over. Match checklist for this set: form (complete set), rail width 12 mm, long carriage, one carriage on a 445 mm rail, preload B light (lower stiction, slightly more play under reversing loads), accuracy H high, bottom-mount mounting direction. If you are replacing a lone carriage instead of buying a set, you will need its pairing code, and because we hold very few carriage-only SKUs most replacements are a special order. Include load, moment and stroke details with your RFQ so we can confirm the ratings for this 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 LRM12L1X445S10BHT FAQ
This complete set uses a 12 mm wide stainless-steel rail, 445 mm long, with one long carriage, preload grade B (light), accuracy grade H (high) and bottom-mount rail fixing. Catalogue screw torques are 58.8 N.cm for M2 screws into steel (39.2 cast iron, 29.4 aluminium) and 196 N.cm for M3 screws into steel (127 cast iron, 98 aluminium). Ambient temperature must not exceed 80 C, with peaks up to 100 C. Re-grease every 100 km of travel or every 3 to 6 months with the same lubricant type. AirTAC does not publish load or moment ratings for LRM - we confirm them for this model through your RFQ.
Choose LRM when the priority is a small, smooth, precise guide in a compact envelope, as with this 12 mm bottom-mount set. Choose LSH when the load is heavy or cantilevered and you need published dynamic, static and moment ratings per carriage to size against - LSH has them, LRM does not, which is why we confirm every LRM rating per model before you commit. If your travel is short and you need crossed-roller rigidity rather than long stroke, LGC is the alternative worth comparing.
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 LRM12L1X445S10BHT
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.