
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X140S10AH is a miniature linear guide on a 15 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.
A complete LRM15 miniature guide in the 140 mm rail length: one 15 mm wide stainless-steel rail with a single long carriage mounted, its end fixing holes 10 mm in from each rail end, fixing from above. Both parts travel together in one greased, matched set.
The maintenance rhythm is worth planning around. The carriage leaves the factory pre-filled with Kyodo Yushi PS No. 2, and re-greasing is due every 100 km of travel or every 3 to 6 months - whichever comes first. That distance binds faster than the calendar suggests: a stroke of roughly 100 mm cycling once per second covers 100 km in about two weeks of continuous running, so a high-cycle station needs a grease routine from day one, topped up through the hole at the rear of the carriage. The balls inside are ISO 3290 G10 grade - a ball-only grade, not a standard for the assembled guide - kept captive by the ball-retention feature and protected by a double-lip seal under an outer cover. Ambient temperature must not exceed 80 C, with transient peaks to 100 C. Load and moment ratings are not published for this series; we verify them for this specific model before purchase, so please send the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM15L1X140S10AH |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM15 |
| Rail width | 15 mm |
| Carriage length | Long carriage |
| Carriages supplied | 1 |
| Rail length | 140 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | A — no 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. |
|---|---|
| 15 | Size code. |
| L | Long carriage. |
| 1X140 | 1 carriage on a 140 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no 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, 140 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.
Trimming the position of a laser diode module on a small optical sub-assembly until the beam lands on target, using the long carriage for a stable, low-wobble platform.
Sliding small turned parts past a dial indicator on a bench checking stand, where grade H accuracy and a wipe-clean stainless rail keep measurements honest.
Guiding a forming die across component leads on a manual bending jig, where light, smooth travel lets an operator feed parts by hand without fighting the carriage.
Accuracy on a miniature guide is earned at installation: the mounting surfaces must be ground or finish-milled for the rated travel accuracy, the datum face can be either side of the rail, and if you ever run two or more carriages on one rail, keep every datum on the same side for better running accuracy. With that groundwork done, decide between series. Substantial or cantilevered loads belong on LSH, which publishes per-carriage dynamic, static and moment ratings you can size against - a table LRM does not offer. Short travel needing crossed-roller rigidity points to LGC. Final checklist for this SKU: set form (rail included), 15 mm rail width, long carriage, one carriage, 140 mm rail, preload A, accuracy H, top-mount direction, and a load rating confirmed with us before you commit.
Quick checklist
Rail width 15 mm; rail length 140 mm; one long (L) carriage; preload A (none); accuracy grade H (high); top-mount rail; end-hole offset 10 mm. Mounting torque: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm respectively. Ambient temperature limit 80 C, transient peaks 100 C. Re-grease interval 100 km of travel or 3 to 6 months, whichever comes first, with grease quantities given per model within a 0.02/0.01 to 1.0/0.50 cm3 published range. The LRM series has no published dynamic load, static load or moment ratings - we confirm these per exact model, so please raise an RFQ and we will supply the figures before you order.
This set wins when the envelope is small, the duty is light and you want smooth, accurate travel on a 15 mm stainless rail that is stocked and quick to ship. It loses to LSH when the load is heavy or cantilevered, because LSH publishes per-carriage dynamic, static and moment ratings you can drop into a sizing calculation - LRM does not, and inventing a number would be worse than asking. Against LGC, this guide is the choice when travel length matters and crossed-roller rigidity is not essential, since LGC suits very short strokes needing maximum stiffness. If the decision is not obvious, send us the stroke, payload and orientation and we will confirm the right series and the load figures for the specific model.
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.