
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X395S10CPT 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.
LRM12N1X395S10CPT is a complete miniature linear guide: a 12 mm wide stainless-steel rail, 395 mm long, carrying a single standard-length recirculating-ball carriage. The S10 code sets the first mounting holes 10 mm in from each end of the rail, and the trailing T means the rail is drilled for bottom mounting - you bolt up through your base into the rail, so nothing projects above the rail top to foul a cover or a moving part.
The C in the code is the key choice here: a medium preload that takes the play out of the carriage, the firm option when a small tipping component would otherwise rock the block on its balls. The trade-off is slightly higher running drag and less tolerance of imperfect mounting surfaces, so prepare the seat by grinding or finish-milling. Accuracy grade is P (precision). Inside the block, ISO 3290 G10 grade Japanese balls run in a ball-retention design behind a double-lip seal, with an outer cover shielding the screws from larger debris. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C. Load and moment ratings are not published for LRM - send us your arrangement by RFQ and we will confirm the figures for this exact model.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X395S10CPT |
|---|---|
| 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 | 395 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | C — medium 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. |
| N | Standard carriage. |
| 1X395 | 1 carriage on a 395 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| P | P — precision 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 bottom-mount slide under a small microscope or vision camera lets you index samples across a 395 mm field without screw heads fouling the top of the stage plate.
Precision-grade running accuracy suits positioning test probes or sockets over a PCB or substrate in a compact handling fixture where mounting space is underneath.
A medium-preload block holds a small laser or lens holder firmly against play while you trim focus or beam position along the rail.
Step up to LSH when the load is substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can check against a calculation, which LRM does not offer. For very short travel where crossed-roller rigidity matters more than reach, step across to LGC instead. Match this set to your drawing on every axis: complete set form, 12 mm rail width, standard carriage length, one block on a 395 mm rail, S10 end-hole offset, preload C, accuracy P, bottom-mount rail. Confirm the load and moment ratings with us before committing - that last check is the one that protects the design. One costing note: across two rail widths the price spread in this range is driven almost entirely by rail length and carriage count, so trimming travel saves more than changing size.
Quick checklist
Rail width 12 mm, rail length 395 mm, one standard-length carriage, S10 end-hole offset, preload C (medium), accuracy P (precision), bottom-mount rail. Screw torques: M2 - 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 - 196 N.cm into steel, 127 into cast iron, 98 into aluminium. Ambient limit 80 C with peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months with a compatible grease through the rear lubrication hole. Basic dynamic load, static load and moment ratings are not published for LRM; we confirm them for this exact model on request.
If your sizing calculation needs published numbers to check against, LSH is the better route - it lists per-carriage dynamic, static and moment ratings in its catalogue table, and it is a larger series. Choose LRM12 when the envelope is tight and the job is light-duty precision positioning, as here: a 12 mm rail, a 395 mm bottom-mount run and a precision-grade preloaded carriage. Send the duty to us and we will confirm the LRM figures for this model or recommend LSH.
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.