Airtac LRM Miniature Linear Guide LRM12N1X120S10AHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X120S10AHT 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 length120 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 LRM12N1X120S10AHT
LRM12N1X120S10AHT is the bottom-mount version of the AirTAC LRM12 miniature guide set: a 120 mm stainless-steel rail, 12 mm wide, with one standard-length ball carriage. The trailing T in the code means the rail is fixed from beneath the mounting surface, leaving the top face unbroken - useful when anything must slide over or seat against the rail without crossing screw heads. Accuracy is grade H, preload A, and the carriage count is one.
The carriage carries ISO 3290 G10 Japanese balls in a retention circuit, sealed by a double-lip design with an outer cover over the seal strip. Two handling cautions matter for a bottom-mount build: the carriage is retained but can still shed balls if it is angled onto the rail or swapped hastily, and on any inclined rail the carriage can slide off under its own weight, so hold it during fitting. Keep the ambient temperature at or under 80 C. AirTAC publishes no load or moment figures for LRM; send the RFQ and we will confirm the rating for this model before you order.
Airtac LRM Miniature Linear Guide LRM12N1X120S10AHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X120S10AHT |
|---|---|
| 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 | 120 mm (spliced sections) |
| 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 LRM12N1X120S10AHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X120 | 1 carriage on a 120 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, 120 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 LRM12N1X120S10AHT Is Used
Under-microscope inspection slide
A specimen stage under a stereo microscope, where the underside-fixed rail keeps the working top surface clear and the H-grade rail gives repeatable 120 mm traverse at bench scale.
Machine-vision camera carriage
A small camera sliding along a frame to scan parts from above: the bottom-mount fixing hides fasteners from the lens path, and the standard carriage gives a compact mounting pad.
Sliding module in test instrumentation
A drawer-like module in a benchtop tester, guided on a 12 mm rail fixed from below so the visible fascia stays clean; zero preload keeps the pull-out effort low for operators.
Is the Airtac LRM Miniature Linear Guide LRM12N1X120S10AHT the Right Guide?
Start from the mounting direction: if your machine base cannot be drilled from above, or the top of the rail must stay clear for a mating part, this bottom-mount set is the right form. Then compare series - LSH publishes dynamic, static and moment ratings per carriage that let you size a heavier or cantilevered load on paper, which LRM does not; LGC wins for short travel needing crossed-roller stiffness. Before ordering, verify: complete set, 12 mm rail, 120 mm length, one standard carriage, preload A (freest running, least rigid of the three grades), accuracy H, bottom-mount. We confirm the load rating per model - include your load case in the RFQ.
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 LRM12N1X120S10AHT FAQ
This is a complete set, not a bare carriage: one 120 mm stainless-steel rail, 12 mm wide, with 10 mm end-hole offsets, plus one standard-length recirculating-ball carriage fitted to it. Preload is code A (none), accuracy grade H, and the T at the end of the code specifies bottom-mount fixing - the rail bolts down from beneath the mating surface. The carriage arrives pre-greased with Kyodo Yushi PS No. 2. If you ever need a spare carriage on its own, that is a different code shape (with BK in it), and carriage-only stock is very thin, so most spares are a special order. Load and moment ratings are not published for LRM - we confirm them per model via RFQ.
Prepare the mating surface by grinding or finish-milling so the travel accuracy of the H-grade rail is achieved, and either long side of the rail may serve as the datum face. Fix it from below per the bottom-mount design, using the screw torque for your fastener and material - for example M3 screws at 196 N.cm into steel or 98 N.cm into aluminium. Before first use, wipe off the rust-preventive oil and apply lubricant through the hole at the rear of the carriage, stroking it until a film shows across the rail. Re-grease every 100 km of travel or every 3 to 6 months, whichever comes first, and never mix lubricant types. Load ratings are not published for this series; we confirm them for your model on request.
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 LRM12N1X120S10AHT
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.