Airtac LRM Miniature Linear Guide LRM12N1X185S17.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X185S17.5AH is a miniature linear guide on a 12 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
- SizeLRM12
- Rail width12 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length185 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 LRM12N1X185S17.5AH
This is the complete guide in a single code: one 185 mm stainless-steel rail, 12 mm across, carrying one standard-length recirculating-ball carriage, matched at the factory and shipped pre-greased.
Handling deserves care with this set. The ball-retention design captures the ISO 3290 G10 balls, yet the maker warns that offering the carriage onto the rail at an angle, or swapping it hastily, can still drop them - a dummy rail makes carriage fitting safer. Preload A leaves the carriage free-running for the smoothest travel, accuracy is the high (H) grade, and the rail mounts from the top. The double-lip seal and outer cover protect the raceway, and ambient temperature must stay at or below 80 C with peaks no higher than 100 C. LRM has no published load or moment ratings; we confirm the figure for this exact model via the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X185S17.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X185S17.5AH |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM12 |
| Rail width | 12 mm |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 185 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 LRM12N1X185S17.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X185 | 1 carriage on a 185 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, 185 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 LRM12N1X185S17.5AH Is Used
Microscope focus axis
A motorized focus axis on a compact microscope uses the free-running preload A carriage, keeping motor drag low over the 185 mm stroke.
Small-parts escapement guide
A miniature escapement that singles parts onto a conveyor uses the 185 mm stainless rail, and the outer cover keeps line grit away from the seal strip.
Cleanroom sample transfer slide
A sample transfer slide in a lithography support tool stays inside the 80 C ambient limit, with the high H grade supporting repeatable sample placement.
Is the Airtac LRM Miniature Linear Guide LRM12N1X185S17.5AH the Right Guide?
Stock depth favors 12 mm: the overwhelming majority of our sets are this width, so availability is strong, while LRM5, LRM7 and LRM9 come only to order. If the load is substantial or cantilevered, size against LSH instead - it publishes dynamic, static and moment ratings per carriage, unlike LRM; for short travel needing crossed-roller rigidity, LGC is the match. Points to verify: it is a complete rail-and-carriage set; rail width 12 mm; one standard carriage; 185 mm rail; preload A - none; accuracy H - high; top-mount; no pairing code needed. We will confirm the load rating for this model on request.
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 LRM12N1X185S17.5AH FAQ
Key figures: 12 mm rail width; 185 mm rail length; one standard-length carriage; 17.5 mm end-hole offset; preload A (none); high (H) accuracy; top-mount rail. Torque M2 screws to 58.8 N.cm (steel), 39.2 (cast iron) or 29.4 (aluminium); M3 to 196, 127 or 98 N.cm. The published ambient limit is 80 C, peaking at 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; send an RFQ and we will confirm them for this model.
Rail and carriage together, factory-assembled as one matched set and pre-filled with Kyodo Yushi PS No. 2 grease - no separate pairing is needed. That differs from a carriage-only code, which includes no rail and depends on a pairing letter. Before first use, wipe off the rust-preventive oil and re-lubricate; do not dismantle the carriage, as that risks lost balls and damaged raceways.
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 LRM12N1X185S17.5AH
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.