Airtac LRM Miniature Linear Guide LRM12N1X345S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X345S10BHT 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 length345 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 LRM12N1X345S10BHT
This set, LRM12N1X345S10BHT, carries a trailing T in the code: the rail is drilled for bottom mounting, so the fixing screws are driven from underneath and the top face stays completely clear for your table or head. You get one 345 mm stainless-steel rail, 12 mm wide, with a single standard-length carriage.
Bottom mounting suits enclosed housings where there is no access from above once assembled. The carriage runs on ISO 3290 G10 Japanese balls with a retention design that holds them during fitting, but the maker is explicit that inserting the carriage at an angle or swapping it hastily can still drop balls - a dummy rail is worth keeping for any carriage change, and hold the carriage on inclined or vertical axes because it can slide under its own weight. Ambient temperature must not exceed 80 C, with transient peaks to 100 C. Load and moment figures are not published for LRM; ask us and we will confirm them for this model.
Airtac LRM Miniature Linear Guide LRM12N1X345S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X345S10BHT |
|---|---|
| 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 | 345 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 LRM12N1X345S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X345 | 1 carriage on a 345 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, 345 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 LRM12N1X345S10BHT Is Used
Lab autosampler XY deck
An autosampler deck carrying a probe between vial trays mounts its rails inside a shallow base; bottom fixing keeps the working top face clear and the carriage sweeps the full 345 mm of travel.
SMT feeder slide
A feeder advance slide inside an SMT machine housing is often assembled face-down; bottom-mount holes let the rail be secured before the cover goes on, with the outer cover keeping debris off the seal strip.
Enclosed base slide
A measurement fixture built into a closed machine base has no access from above once assembled, so under-rail fixing is the practical route; hold the carriage during fitting so the retained balls stay in place.
Is the Airtac LRM Miniature Linear Guide LRM12N1X345S10BHT the Right Guide?
Because this rail mounts from below, check early that your base has through pockets or counterbores deep enough for the screw heads, and that either face can serve as the datum - both sides of an LRM rail are usable as the datum face. If the application carries a real load rather than just a light moving mass, move up to LSH, whose published per-carriage dynamic, static and moment ratings allow a proper calculation; LRM publishes none. Short-travel, high-rigidity needs belong with LGC and its crossed rollers. Confirm rail width, carriage length, count, preload, accuracy grade, mounting direction and - with us, before committing - the load rating 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 LRM12N1X345S10BHT FAQ
By the code: 12 mm rail width, 345 mm rail length, one standard-length carriage, preload grade B (light), accuracy grade H (high) and a bottom-mount rail, fixed with screws driven from underneath. Installation calls for a ground or finish-milled seat; torque M2 screws to 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium, or M3 screws to 196, 127 and 98 N.cm. The ambient limit is 80 C with transient peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them for this model on request.
Bottom mounting only changes where the screws go - access from below, top face clear - not the light-duty character of the guide. The bigger decision is series: LSH publishes per-carriage dynamic, static and moment ratings, so a heavier or cantilevered load can be checked on paper, while LRM leaves the load rating to be confirmed model by model with us. LGC remains the choice for short travel needing crossed-roller rigidity. If your duty is a small, well-guided mass on a 345 mm run, this set keeps the envelope slimmer than either alternative.
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 LRM12N1X345S10BHT
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.