
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X395S10CP 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 LRM12L1X395S10CP is a complete miniature linear guide set: one 395 mm stainless-steel rail, 12 mm wide, carrying a single long (L) recirculating-ball carriage. The S10 segment sets the first mounting hole 10 mm in from the rail end, so check your base-plate hole pattern against that offset before machining. Mounting is the standard top-mount arrangement, with fixing holes through the rail from above. Accuracy is grade P (precision) and the carriage is built with preload C (medium), the firmest running grade offered on LRM.
Medium preload removes most running clearance, which tightens repeatability at the cost of a little drag and a demand on the mounting face: the surface under the rail must be ground or finish-milled for the P grade to mean anything. The carriage uses a double-lip seal for grease retention and dust exclusion, an outer cover that shields the seal strip and screw heads, and a ball-retention design that keeps the ISO 3290 G10 Japanese-made balls (a property of the balls alone, not an accuracy grade for the assembly) from spilling during handling. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. Load and moment ratings are not published for the LRM series; we confirm the figures for this exact model when you send the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X395S10CP |
|---|---|
| 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 |
| 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. |
| L | Long 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 395 mm translation axis under a benchtop inspection microscope, where grade P accuracy and a long carriage keep the optics square to the sample over the full stroke.
Carrying a small syringe-dispensing head across PCB panels on an electronics assembly bench, where the long carriage helps resist the tipping moment of an overhung nozzle.
A light part-transfer head on a laboratory automation rig, built around a 12 mm rail to keep the frame compact; the load rating is confirmed per model before the build is committed.
If the carried mass is substantial or cantilevered, step up to the AirTAC LSH series: LSH publishes per-carriage dynamic, static and moment ratings you can actually size against, which LRM does not. For short travel where crossed-roller rigidity matters more than stroke, step across to LGC. Before ordering, run this checklist: form (this is a complete set, rail plus one long carriage), 12 mm rail width, long carriage, one carriage, 395 mm rail length, preload C with its tighter-surface trade-off, accuracy P, top-mount direction, and finally confirm the load rating with us for this specific model. If your 395 mm of travel is fixed and budget is tight, note that across the 12 and 15 mm range price tracks rail length and carriage count far more than rail width, so never pay for width you do not need.
Quick checklist
Rail width 12 mm, rail length 395 mm, one long carriage, 10 mm end-hole offset, preload C (medium), accuracy grade P, top-mount rail. For M3 screws the specified torque is 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Ambient temperature must stay at or below 80 C with 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 per model when you enquire.
C is the firmest grade offered on LRM: it takes out play for repeatable positioning but adds running drag and punishes an imperfect mounting surface. If your base plate is finish-milled rather than ground, or the carriage is moved by hand, compare the preload B variant of the same 395 mm rail. Either way, have us confirm the load rating for the exact model before you commit.
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.