Airtac LRM Miniature Linear Guide LRM12N1X120S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X120S10APT 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
- AccuracyP — precision 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 LRM12N1X120S10APT
LRM12N1X120S10APT combines the two quieter choices in the LRM12 range: accuracy grade P for precision travel, and bottom-mount fixing (the trailing T) so the 120 mm stainless-steel rail bolts down from beneath, keeping its top surface uninterrupted. One standard-length carriage is fitted; preload is code A.
Because a precision-grade rail rewards careful fitting, note the manufacturer's cautions: do not strike or drop the rail - accuracy and life can suffer with no visible damage - and although the ball-retention design holds the ISO 3290 G10 Japanese balls in place, inserting the carriage at an angle or swapping it quickly can still drop balls, so a dummy rail is wise if field carriage changes are planned. Keep the ambient temperature at or below 80 C, peaking no higher than 100 C. This 120 mm length sits near the short end of the 40-995 mm span we stock, and since stocked set prices are driven mainly by rail length rather than width, short rails like this are the economical end of the range. Load and moment ratings are not published for LRM; we confirm them for this model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X120S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X120S10APT |
|---|---|
| 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 | P — precision 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 LRM12N1X120S10APT
| 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. |
| P | P — precision 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 LRM12N1X120S10APT Is Used
Metrology fixture with underslung rail
A checking fixture where the P-grade rail is fixed beneath the base plate so the upper surface stays flat and clear for the part, with the carriage driving a small indicator arm over 120 mm.
Component-sorting vision head
A compact vision module traversing above small parts on a sorter: bottom-mount fixing keeps fasteners away from the optical axis, and the precision grade steadies the image repeat.
Medical device assembly station jig
A light jig slide for placing components into a device housing, where the 12 mm bottom-mount rail bolts into a machined aluminium plate and the clean top face suits a wipe-down production area.
Is the Airtac LRM Miniature Linear Guide LRM12N1X120S10APT the Right Guide?
This SKU answers two requirements at once - precision-grade travel and fixing from below - so shortlist it when both apply, for example where the rail top carries an optical or measuring element. If your load is heavy or cantilevered, choose LSH instead: it publishes dynamic, static and moment ratings per carriage you can design against, while LRM ratings are confirmed per model with us. For short travel needing crossed-roller stiffness, LGC is the alternative. Checklist: complete set (rail plus carriage), 12 mm rail, 120 mm length, one standard carriage, preload A (freest running, lowest rigidity of the three grades), accuracy P, bottom-mount. Include your load case in the RFQ so we can verify the rating before you order.
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 LRM12N1X120S10APT FAQ
A complete set: one 120 mm stainless-steel rail, 12 mm wide, 10 mm end-hole offsets, and one standard-length recirculating-ball carriage. Preload code A (none); accuracy grade P (precision); the trailing T means bottom-mount, so the rail fixes from beneath the mating surface. Torque the screws per fastener and material - M3 at 196 N.cm into steel, 127 into cast iron, 98 into aluminium, with M2 at 58.8, 39.2 and 29.4 N.cm. The carriage arrives greased with Kyodo Yushi PS No. 2; re-grease every 100 km of travel or every 3 to 6 months. Ambient temperature must not exceed 80 C, peaks 100 C. Load and moment ratings are not published for LRM - we confirm them per model, so send the RFQ.
Spare carriages exist but are ordered with a different code shape - a BK carriage-only code such as LRM12BK-L-H-C, which contains no rail length and no preload position. Carriage-only items carry a pairing code from A to E, and the replacement must share the code of the original rail-and-carriage pairing, so read the code off the part before you discard it. We stock only a handful of carriage-only SKUs, so most spare carriages are a special order rather than an off-the-shelf item. Also note the manufacturer's warning: even with ball retention, fitting a carriage at an angle or in a hurry can drop balls, so plan a dummy rail for field swaps. Load ratings for any replacement are confirmed per model via RFQ.
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 LRM12N1X120S10APT
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.