
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X395S10BHT 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.
The trailing T in LRM12L1X395S10BHT changes one thing that matters on the bench: the rail mounts from below, with its fixing holes arranged so fasteners enter through the underside. Everything else is a 12 mm wide, 395 mm long stainless rail with one long carriage, light preload B, accuracy grade H, and the S10 offset 10 mm from the rail end.
Bottom-mounting suits frames where the screws cannot be reached from above - a slot cut in a machine deck with the fixings hidden underneath - and the outer cover keeps larger debris away from the seal strip while the screw heads stay concealed. Ball retention helps during handling, though the maker warns that angling the carriage on or swapping it hastily can still drop balls, so a dummy rail is wise if you plan field swaps. Japanese ISO 3290 G10 balls are a ball grade only. Keep the surroundings at or below 80 C. Load and moment ratings are not published for LRM, so we confirm them for this model through the RFQ before ordering.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X395S10BHT |
|---|---|
| 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 | 395 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X395 | 1 carriage on a 395 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 395 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.
A reagent tray carrier sliding in a slot cut into a diagnostic analyzer deck, where underside fixings keep the working surface uncluttered and easy to wipe down.
Light indexing of a small wafer boat inside a compact handling box, mounted from below so the top plate stays smooth and particle-friendly.
A compact inspection camera rail beside a bottling conveyor, bolted beneath the bracket plate so the sensor looks past an unbroken surface.
When the duty is heavier than light positioning, or the load hangs off a cantilever, size up to LSH - it publishes per-carriage dynamic, static and moment ratings you can actually calculate with, unlike LRM. Short travel demanding crossed-roller stiffness points to LGC instead. Check the list before ordering: set form, 12 mm rail width, long carriage, one block, 395 mm rail length, preload B with its small drag penalty, grade H accuracy, bottom-mount direction, and a confirmed load rating from us.
Quick checklist
Configuration: 12 mm rail width, 395 mm rail length, 10 mm end offset, one long carriage, preload B (light), accuracy H, bottom-mount (the trailing T). M3 screws tighten to 196 N.cm in steel, 127 N.cm in cast iron or 98 N.cm in aluminium. Ambient temperature must stay under 80 C with peaks to 100 C, and re-greasing falls due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; ask us and we confirm them per model.
T sets bottom-mount rail mounting: the fixing holes are arranged so screws go in from underneath the rail, useful when the top face must stay clear. The box holds a complete set - the 395 mm stainless rail with its single long carriage fitted - plus factory grease; screws are not included. Mounting surfaces should be ground or finish-milled to reach the rated travel accuracy. Ratings are confirmed per model via the RFQ.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.