Airtac LRM Miniature Linear Guide LRM15L1X138S9AH
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X138S9AH 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.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM15
- Rail width15 mm
- Carriage lengthLong carriage
- Carriages1
- Rail length138 mm
- AccuracyH — high grade
- PreloadA — no preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LRM Miniature Linear Guide LRM15L1X138S9AH
One complete LRM15 set: a 138 mm length of 15 mm stainless-steel rail with a single long carriage riding on it, mounting holes drilled 9 mm in from each rail end (S9 offset), top-mount fixing. Rail and carriage arrive together as a matched, greased unit.
Specifying the long block is an easy call on this series: long carriages are stocked here as deeply as standard ones - 512 long-carriage sets against 475 standard across the range - so choosing the longer carriage for a more even ball distribution and a wider support footprint costs nothing in availability. The recirculating balls are Japanese-made ISO 3290 G10 grade, a grade that applies to the balls alone rather than to the guide as an assembly standard. The ball-retention design keeps balls in the carriage during handling, but the manufacturer warns that inserting the carriage at an angle or swapping it hastily can still shed balls, so fit it square and slow, ideally over a dummy rail. A double-lip seal manages oil scraping and dust exclusion while an outer cover keeps larger debris off the seal strip. Keep ambient temperature at or under 80 C, with peaks no higher than 100 C. Load and moment capacities are confirmed model by model before ordering - raise an RFQ and we will return the figures for this exact configuration.
Airtac LRM Miniature Linear Guide LRM15L1X138S9AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM15L1X138S9AH |
|---|---|
| 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 | 138 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.
Model Code: Airtac LRM Miniature Linear Guide LRM15L1X138S9AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 15 | Size code. |
| L | Long carriage. |
| 1X138 | 1 carriage on a 138 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 138 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.
Where the Airtac LRM Miniature Linear Guide LRM15L1X138S9AH Is Used
Desktop pick-and-place head
Guiding a suction head on its shuttle stroke in a small desktop placer, where the long carriage resists the nodding moment of a head reaching for components at the stroke end.
Microscope inspection slide
Sliding a USB inspection microscope along a 138 mm lane on an electronics rework bench so an operator can sweep a populated board past the lens in one pass.
Harness press station
Carrying a small termination press down onto ribbon-cable joints in a wire-harness shop, where repeatable straight-line guidance keeps crimp alignment true.
Is the Airtac LRM Miniature Linear Guide LRM15L1X138S9AH the Right Guide?
At 138 mm of rail this set sits in the lower part of the stocked price band, since length rather than width is what moves LRM pricing. Two comparisons matter. If your payload is significant or overhung, LSH is the honest step up - it publishes per-carriage dynamic, static and moment ratings you can calculate against, which LRM deliberately does not. If the travel is short and you need the rigidity of crossed rollers, LGC is the sideways move. Checklist before you commit: complete-set form with rail included, 15 mm rail width, long carriage, carriage count 1, rail length 138 mm, preload A (smoothest sliding, no built-in interference), accuracy grade H, top-mount rail direction, and a load rating confirmed with us rather than assumed from any other series.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LRM Miniature Linear Guide LRM15L1X138S9AH FAQ
You receive the complete set: one 15 mm wide stainless-steel rail, 138 mm long, with one long carriage fitted - no separate carriage purchase is needed. Before first use, wipe off the rust-preventive oil and apply lubricant; the carriage ships pre-filled with Kyodo Yushi PS No. 2 and can be topped up through the lubrication hole at its rear. Re-grease every 100 km of travel or every 3 to 6 months, whichever comes first, and never mix lubricant types. Note that 100 km arrives sooner than it sounds: a short stroke cycling continuously can cover it in a matter of weeks. Mounting surfaces should be ground or finish-milled for the rated travel accuracy. Dynamic, static and moment load ratings are not published for LRM - we confirm them per model, so send an RFQ.
Preload A means no built-in interference in the ball circuit, so the carriage slides with the least drag of the three LRM grades (A none, B light, C medium). That gives the freest motion and the lowest stick-slip tendency, at the cost of a small amount of internal clearance. It suits light-duty positioning where smoothness matters more than removing every trace of play. If your application later needs a stiffer feel, the same rail geometry is available with preload B or C - we stock all three grades. Whatever grade you pick, we will confirm the load and moment ratings for that exact model before you order.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LRM Miniature Linear Guide LRM15L1X138S9AH
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.