
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X128S24AH 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.
This is LRM15L1X128S24AH, a complete miniature linear guide set from AirTAC's LRM range: one 128 mm stainless-steel rail, 15 mm wide, carrying a single long recirculating-ball carriage. The code spells out the whole build - long body, one carriage, 24 mm end-hole offset, no preload, high accuracy, rail screwed down from the top. There is no second block and no preload in this configuration.
Three design points earn their keep on a short rail like this. LRM carriages of any length share one rail profile, so a later change to a standard or long body keeps the same rail; the ball-retention design holds the ISO 3290 G10 steel balls in place during handling; and the double-lip seal plus outer cover shield the raceways from swarf. Ambient temperature must stay at or below 80 C, with peaks up to 100 C - worth checking if the stage sits beside a hot plate or lamp housing. Where you would expect a load figure in this text, there is none to give: LRM ratings are not published, and we confirm the figure for this exact model when you send the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM15L1X128S24AH |
|---|---|
| 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 | 128 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. |
| 1X128 | 1 carriage on a 128 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, 128 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.
On a benchtop fiber tester, this 128 mm rail nudges a connector chuck into position under a microscope - light, short strokes where the long carriage keeps the chuck from tipping at either end of travel.
A spectrophotometer accessory that steps a cuvette rack between sampling positions benefits from preload-free, high-accuracy motion on a rail small enough to fit inside the instrument housing.
A benchtop wire-stripping or cutting head can ride this long carriage along the wire axis, holding the guide finger aligned through the cut without visible play.
Sizing starts with the honest limitation: LRM publishes no dynamic, static or moment ratings, so a load that is substantial or cantilevered should step up to the LSH series, where those per-carriage figures are listed and you can calculate against them. For short travel where rigidity matters more than stroke, LGC crossed-roller guides are the stiffer cross-series option. Checklist for this code: complete set form, 15 mm rail width, long carriage, one carriage, 128 mm rail length, preload A - free-running and the least rigid grade - H accuracy, top-mount rail, and confirmation of the load rating with us before you order. One pricing note: stocked sets span roughly $66 to $831 across only two rail widths, so rail length and carriage count drive the price far more than size does - trim travel before stepping up in size. Mounting surfaces should be ground or finish-milled to reach the rated travel accuracy.
Quick checklist
This set has a 15 mm wide stainless-steel rail, 128 mm long, with one long carriage, preload grade A (none) and accuracy grade H (high), top-mount rail fixing and a 24 mm end-hole offset. Screw torque is 58.8 N.cm for M2 screws and 196 N.cm for M3 screws into steel (39.2 and 127 N.cm into cast iron, 29.4 and 98 N.cm into aluminium). Ambient temperature must not exceed 80 C, with peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Basic dynamic and static load ratings and moment ratings are not published for LRM - we confirm them for this exact model when you send the RFQ.
One stainless-steel rail and one long recirculating-ball carriage, pre-filled with Kyodo Yushi PS No. 2 grease. No extra carriages and no second rail are part of this code. If you later need a spare block, note that our carriage-only stock is minimal - most spare carriages are ordered to match the rail, so plan ahead and cover it in 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.