Airtac LRM Miniature Linear Guide LRM12N1X120S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X120S10CHT 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
- PreloadC — medium 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 LRM12N1X120S10CHT
The trailing T at the end of LRM12N1X120S10CHT changes one thing that matters at install time: the rail is drilled for bottom mounting, so it is secured from underneath the mounting table rather than through the top. Everything else matches the plain set - a 12 mm wide stainless-steel rail, 120 mm long, carrying one standard-length recirculating-ball carriage, with 10 mm end-hole offset, preload C and accuracy H. What lands on your bench is rail plus carriage, assembled; fixing screws are chosen separately to suit your base. AirTAC states no load or moment ratings for LRM, so ask us per model and we will confirm the figures for this code.
Bottom mounting earns its keep on machines where the top face of the base must stay clear or flush - screw heads never intrude into the carriage path or the part footprint. To achieve the rated travel accuracy, the catalogue expects the mating surface ground or finish-milled, and either side of the rail can act as the datum face. The carriage runs on ISO 3290 G10 balls - a grade for the balls themselves, not for the assembly - retained so they do not spill during normal handling, and sealed by a double-lip wiper under a screw-hiding outer cover. Keep the surroundings at or below 80 C; short excursions to 100 C are tolerated. Because this is a C-preload part, expect a firmer, slightly draggier slide than its A-preload twin.
Airtac LRM Miniature Linear Guide LRM12N1X120S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X120S10CHT |
|---|---|
| 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 | C — medium 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 LRM12N1X120S10CHT
| 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. |
| C | C — medium 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 LRM12N1X120S10CHT Is Used
Dispensing head slide on a compact assembler
Carries a micro-dispense valve over a substrate; bottom fixing keeps the rail's top face clear for the valve manifold and cable drops.
PCB test fixture shuttle
Slides boards under a pogo-pin gantry in a test rack; with bolts taken from below, no fastener heads foul the board path or the fixture lid.
Fast micro pick-and-place head
A lightweight vacuum head shuttling SMD parts between feeder and board; preload C damps reversal play so pick points stay put cycle after cycle.
Is the Airtac LRM Miniature Linear Guide LRM12N1X120S10CHT the Right Guide?
Start by confirming the form: this is a complete set, not a replacement carriage, so no pairing letter is needed. Then check rail width (12 mm), carriage length (standard), carriage count (one), rail length (120 mm), preload (C - the rigid, less forgiving choice) and accuracy (H), and make sure bottom mounting genuinely suits your base before ordering. If the load is substantial or overhangs the carriage, move up to LSH, which publishes per-carriage dynamic, static and moment ratings you can actually calculate with - LRM publishes none. For short travel where stiffness per millimetre matters more than envelope, compare LGC's crossed-roller guides. In every case, confirm the load and moment ratings with us before you commit.
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 LRM12N1X120S10CHT FAQ
Rail width 12 mm, rail length 120 mm, one standard carriage, preload C (medium), accuracy H (high), bottom-mount holes, 10 mm end offset. Tighten M2 screws to 58.8 N.cm in steel, 39.2 N.cm in cast iron, 29.4 N.cm in aluminium; M3 screws to 196, 127 and 98 N.cm. Keep ambient temperature at or below 80 C with 100 C peaks. Re-lubricate every 100 km of travel or every 3 to 6 months. Dynamic, static and moment ratings are not published for LRM - we confirm them for this model on request.
Yes - this is a complete set: the 120 mm stainless rail arrives with its standard carriage pre-fitted and pre-filled with Kyodo Yushi PS No. 2 grease. The T suffix means bottom mounting: screws pass from beneath, so plan the base with access from below and a ground or finish-milled surface. It is not a carriage-only part, so no pairing code applies. Wipe the rust-preventive oil off and lubricate before first use, and keep the carriage held when working on an incline, since it can slide under its own weight.
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 LRM12N1X120S10CHT
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.