
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X100S25AH 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.
LRM15L1X100S25AH is a complete AirTAC LRM miniature linear guide set: one 15 mm wide stainless-steel rail, 100 mm long, with a single long (L) carriage already fitted. The carriage rides on recirculating balls, the first mounting hole sits 25 mm from the rail end, and with no trailing T the rail fixes from its top face. The set arrives assembled, rail and carriage together, ready to seat and bolt down.
Underneath the compact footprint, the design points that matter are the common-rail profile shared by LRM carriages, the ball-retention feature that keeps balls in place during handling, Japanese-made ISO 3290 G10 balls, a double-lip seal for oil scraping and dust exclusion, and an outer cover that shields the seal strip and hides the screws. Ambient temperature is limited to 80 C, with peaks to 100 C, which is a real constraint next to a heater or an oven door. In this range price tracks rail length far more than rail width, so a 100 mm rail sits at the economical end of the stocked 40-995 mm span. LRM publishes no load or moment ratings; we confirm the figure for this exact model, so send the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM15L1X100S25AH |
|---|---|
| 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 | 100 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. |
| 1X100 | 1 carriage on a 100 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, 100 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 benchtop XY stage that positions small PCB assemblies under a camera: the 15 mm rail keeps the stack low and the 100 mm travel covers a typical board strip.
A liquid-handling head traversing microplate columns, where smooth ball motion matters more than force. Plan the maintenance window early: at one cycle per second on a short stroke, the 100 km re-grease interval arrives in weeks, not years.
Guiding a small press head onto board-mounted connectors, where the long carriage body helps resist the tipping moment of an offset tooling.
Size upward when the duty is real: LSH publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not, so any substantial or cantilevered load belongs on LSH. When travel is short and you need crossed-roller rigidity instead of ball smoothness, step across to LGC. Before ordering, tick the checklist: set or carriage-only form, 15 mm rail width, long carriage, one block, 100 mm rail length, preload A (free-running and easiest to mount accurately), grade H accuracy, top-mount rail, and a load rating confirmed with us against your actual load case. Availability note: size 12 dominates our stock with 924 of 988 sets, against 63 in size 15, so both widths ship quickly here, but a layout already on a 12 mm rail has the deepest shelf depth.
Quick checklist
A complete set: one 15 mm wide stainless-steel rail, 100 mm long, with one long carriage factory-fitted, preload A (no preload), accuracy grade H, top-mount rail fixing. Seating screws torque to 58.8 N.cm (M2) or 196 N.cm (M3) in steel, with lower values in cast iron and aluminium. Ambient temperature must stay at or below 80 C with peaks to 100 C, and the grease (Kyodo Yushi PS No. 2, pre-filled) should be renewed every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; tell us your load case and we confirm the figure for this exact model before you order.
Choose LRM when the envelope is tight and the duty is light: a 15 mm rail with a long carriage gives a low, compact axis, and the long body spreads the load over more balls. Choose LSH when the load is substantial or cantilevered, because LSH publishes per-carriage dynamic, static and moment ratings you can calculate against, while LRM publishes none, so any sizing on LRM ends with us confirming figures for the specific model. For short travel where crossed-roller rigidity beats ball smoothness, compare LGC as well.
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.