Airtac LRM Miniature Linear Guide LRM15L1X135S7.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM15L1X135S7.5AH 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 length135 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 LRM15L1X135S7.5AH
This is a complete AirTAC LRM15 miniature linear guide set: one 15 mm wide stainless-steel rail, cut to 135 mm, with a single long (L) recirculating-ball carriage already fitted and ready to travel. The end mounting holes sit 7.5 mm in from each rail end (the S7.5 offset), and the rail mounts from the top with cap screws. There is no separate assembly step - the carriage ships on the rail.
The long block is the feature to notice here: its greater footprint gives a steadier bearing span than the standard carriage, which helps any small overhang or tipping tendency in a compact layout. Inside, the recirculating balls are ISO 3290 G10 grade (that grade applies to the balls only, not to the guide assembly as a standard), held in place by a ball-retention design during handling. A double-lip seal scrapes oil back and excludes dust, and an outer cover shields the seal strip and screw heads. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C - keep the axis clear of heater banks and hot enclosures. LRM carries no published load or moment figures; we confirm the numbers for this exact model before you order, so send the RFQ and we will come back with them.
Airtac LRM Miniature Linear Guide LRM15L1X135S7.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM15L1X135S7.5AH |
|---|---|
| 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 | 135 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 LRM15L1X135S7.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 15 | Size code. |
| L | Long carriage. |
| 1X135 | 1 carriage on a 135 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, 135 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 LRM15L1X135S7.5AH Is Used
Optical sensor slide
Positioning a photodiode or compact camera module along a 135 mm axis on an optical breadboard, where a 15 mm rail fits the breadboard hole pattern without crowding neighbouring optics.
Micro-dispenser carriage
Carrying a small syringe dispenser head over short, repeated strokes in an electronics encapsulation cell, where the long carriage steadies the head at the end of its reach.
Connector test fixture
Translating a PCB assembly under a bank of spring probes on a bench-top continuity tester, where smooth, play-free travel protects fine contact tips.
Is the Airtac LRM Miniature Linear Guide LRM15L1X135S7.5AH the Right Guide?
Rail length, not rail size, drives the price of stocked LRM sets - the range spans roughly $66 to $831 across only two rail widths, so trimming travel before trimming size is where the savings are. A 135 mm rail sits at the compact end of that spread. If the load turns out to be substantial or cantilevered, step up to LSH: it publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. If travel is very short and the job demands crossed-roller rigidity, step across to LGC instead. Before ordering, run the checklist: set form (rail included), 15 mm rail width, long carriage, one carriage, 135 mm rail length, preload A (no built-in drag, the freest-sliding grade), accuracy H, top-mount mounting, and a confirmed load rating from us - never assume one.
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 LRM15L1X135S7.5AH FAQ
Rail width 15 mm, rail length 135 mm, one long (L) carriage, preload A (none), accuracy grade H (high), top-mount rail, end-hole offset 7.5 mm. Screw torque for mounting: 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 with peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months; grease quantities vary per model within a published 0.02/0.01 to 1.0/0.50 cm3 range. Basic dynamic load, static load and moment ratings are not published for the LRM series - we confirm them for this exact model on request, so please raise an RFQ before committing the design.
Choose LRM when the envelope is tight and the duty is light - a 15 mm stainless rail with a recirculating-ball carriage gives smooth, accurate motion in a small footprint. Choose LSH when the load is heavy or hangs off the carriage, because LSH publishes per-carriage dynamic, static and moment ratings you can plug straight into your sizing calculation, whereas LRM ratings are confirmed model by model through us. If you are unsure, send us the stroke, orientation and payload and we will confirm which series and which exact load figures apply.
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 LRM15L1X135S7.5AH
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.