
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X115S15AH 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 AirTAC set pairs a 115 mm stainless-steel rail, 15 mm wide, with one long carriage set for free running. Preload grade A means no factory preload, so rolling resistance is at its lightest and motion is easiest to start by hand. Accuracy grade H is the high grade, and the rail fixes from the top with screws you supply.
The long carriage spreads its ball contact over a greater length, which steadies any tipping component on a short-stroke slide. Balls are Japanese-made to ISO 3290 G10 - a grade for the balls alone, not the assembly - and the double-lip seal plus outer cover guard the raceways from swarf and dust. Note the handling point: on an inclined rail, an unpreloaded carriage can slide off under its own weight, so hold it while working. The manufacturer publishes no load or moment ratings for LRM; ask us on the RFQ and we confirm them for this exact code.
| Model | Airtac LRM Miniature Linear Guide LRM15L1X115S15AH |
|---|---|
| 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 | 115 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. |
| 1X115 | 1 carriage on a 115 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, 115 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 low-friction long carriage carries a miniature suction head across 115 mm of travel in a light-duty pick-and-place gantry, where every gram of starting resistance matters.
Smooth, unpreloaded travel suits a hand-fed station inserting pins into small connectors, letting the operator set the pace without fighting the slide.
Replacing a worn slide on a laboratory syringe pump with a free-running 15 mm guide restores easy, even motion on the platen.
A free-running carriage with no preload suits smooth, low-friction duty; the moment the load becomes substantial or overhung, move to LSH, which publishes the per-carriage dynamic, static and moment numbers LRM does not. Short travel with a need for crossed-roller rigidity points to LGC instead. Before ordering, settle each item: complete set form, 15 mm rail width, long carriage, one block, 115 mm rail, preload A (easiest sliding, least resistance to play), accuracy H, top-mount fixing. Send the RFQ so we can confirm the load rating for this code - 115 mm sits comfortably inside the stocked 40-995 mm length span, so availability is generally good.
Quick checklist
A 15 mm wide stainless-steel rail 115 mm long, one long carriage, preload A (none), high accuracy H, top-mount fixing and a 15 mm end-hole offset. Drive M3 screws at 196 N.cm into steel, 127 into cast iron, 98 into aluminium. Ambient temperature must not exceed 80 C, with brief peaks to 100 C, and re-greasing falls due every 100 km of travel or every 3 to 6 months. No load or moment rating is published for LRM; we confirm the figures per model.
Pick LRM when the envelope is small and the duty is light, as here: you get a compact 15 mm ball guide chosen for size and smoothness, with the load rating confirmed per model rather than published. Pick LSH when the load is heavier or cantilevered, because its catalogue lists dynamic, static and moment ratings per carriage you can calculate against. For short travel where crossed-roller rigidity beats ball smoothness, LGC is the closer match. Either way, send us the duty cycle and we will confirm the right series.
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.