Airtac LRM Miniature Linear Guide LRM12N1X145S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X145S10BHT 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 length145 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 LRM12N1X145S10BHT
LRM12N1X145S10BHT is the bottom-mount twin of the popular 12 mm LRM set: a 145 mm stainless-steel rail with a single standard recirculating-ball carriage. The trailing T in the code means the rail fixes from underneath - screws pass up through the rail into the machine bed, so the top face stays completely clear for the carriage and any tooling you bolt to it.
That hidden-fixing arrangement pairs well with the outer cover, which already hides screws and shields the double-lip seal strip from swarf and larger debris. Inside the carriage, the recirculating balls are ISO 3290 G10 grade, Japanese made, for roundness and consistent wear, and the light preload B grade trims internal play for steadier motion. Ambient temperature must stay at or below 80 C with brief peaks to 100 C - relevant when the rail is buried inside an enclosed housing with little airflow. No load or moment rating is published for LRM; we verify the figures for this configuration per order, so include your payload details in the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X145S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X145S10BHT |
|---|---|
| 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 | 145 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 LRM12N1X145S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X145 | 1 carriage on a 145 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, 145 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 LRM12N1X145S10BHT Is Used
Inverted microscope focus slide
Under an inverted microscope, the optics hang below the stage plate; a bottom-fixed rail keeps the working surface unbroken while the focus carriage carries the objective turret.
Cleanroom wafer transfer shuttle
Inside a wafer transfer enclosure, a shuttle glides 145 mm between cassette and process chuck on this guide, with the rail fixed from below so no screw heads collect particles above.
Sealed electronics test fixture
A benchtop ICT fixture moves its probe carriage along an enclosed channel; the bottom-mount rail lets the builder seal the top cover completely, keeping dust off the travel path.
Is the Airtac LRM Miniature Linear Guide LRM12N1X145S10BHT the Right Guide?
Pick this bottom-mount version when the mounting face is below the rail and you cannot reach screws from above - typical of enclosed housings, inverted assemblies or tops that must stay unbroken. It shares the 145 mm rail, standard carriage, preload B and H accuracy of the top-mount version, so the choice is purely about access. If your load is significant or cantilevered, LSH publishes the per-carriage dynamic, static and moment ratings needed for real sizing; LRM does not, so we confirm the rating for this model via RFQ. For short travel demanding crossed-roller stiffness, compare LGC. Checklist: complete set form, 12 mm rail width, standard block, one carriage, 145 mm rail, preload B trade-off (less play, a little more drag), accuracy H, bottom-mount direction, load rating confirmed with us.
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 LRM12N1X145S10BHT FAQ
T means bottom-mount: the rail is fixed through its base, leaving the top face clear. The rest of the spec: 12 mm stainless rail, 145 mm long, 10 mm end-hole offset, one standard-length carriage, light preload B, accuracy grade H. M3 screws torque to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium. Ambient limit 80 C, brief peaks to 100 C; re-grease 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 exact model before ordering.
Yes - rail and carriage ship together, assembled and pre-filled with Kyodo Yushi PS No. 2 grease. Handle it with care: the ball-retention design helps, but presenting the carriage to the rail at an angle or swapping it hastily can still drop balls, so work slowly and consider a dummy rail if you plan field swaps. Never strike or drop the rail - hidden damage can affect accuracy - and do not dismantle the carriage. On an inclined mount, the carriage can slide under its own weight, so hold it during installation. Wipe the rust-preventive oil off and lubricate before first use.
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 LRM12N1X145S10BHT
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.