Airtac LRM Miniature Linear Guide LRM12L1X420S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X420S10CHT 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 lengthLong carriage
- Carriages1
- Rail length420 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 LRM12L1X420S10CHT
LRM12L1X420S10CHT is a complete AirTAC LRM miniature linear guide set: a single 12 mm wide stainless-steel rail, cut to 420 mm, with one long (L) recirculating-ball carriage already fitted and pre-greased with Kyodo Yushi PS No. 2. The trailing T in the code sets a bottom-mount rail, so the fixing holes are arranged for bolting the rail upward into a base rather than down from the machine deck.
The long carriage spreads its ball circuit over a greater length of rail, which steadies any load with a tipping component, and preload C is the firmest grade offered on LRM, trading a stiffer feel for tighter alignment demands at installation. Inside, the Japanese-made ISO 3290 G10 balls (a grade for the balls themselves, not for the guide assembly) are held captive by the ball-retainer design and sealed by a double-lip wiper under an outer cover that hides the screws and shields the seal strip from swarf. Keep the ambient at or below 80 C, with transient peaks no higher than 100 C. AirTAC publishes no load or moment figures for LRM; send the RFQ and we will confirm the ratings for this exact SKU.
Airtac LRM Miniature Linear Guide LRM12L1X420S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X420S10CHT |
|---|---|
| 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 | Long carriage |
| Carriages supplied | 1 |
| Rail length | 420 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 LRM12L1X420S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X420 | 1 carriage on a 420 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, 420 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 LRM12L1X420S10CHT Is Used
Laser marking gantry slide
A 420 mm axis inside a compact fiber-laser marking machine, where the rail bolts up from below into a milled pocket and the long carriage steadies the scan head.
PCB dispensing axis
Glue and solder-paste dispensing on small circuit boards: medium preload damps vibration at the nozzle while a few hundred millimeters of travel matches the 420 mm rail.
Electronics pick-and-place head
A light pick-and-place axis where the head overhangs the carriage; the long L body lengthens the bearing span against tipping at each pickup.
Is the Airtac LRM Miniature Linear Guide LRM12L1X420S10CHT the Right Guide?
Size the application honestly before staying with LRM. When the load is substantial or cantilevered, step up to AirTAC LSH, which publishes per-carriage dynamic, static and moment ratings you can size against - figures the LRM catalogue simply does not list. Where travel is short and crossed-roller rigidity matters more than stroke, compare LGC as well. Match this code to the drawing: complete set, 12 mm rail width, long carriage, one carriage, 420 mm rail, preload C (firmer under load, less forgiving during installation), H high accuracy, bottom-mount holes, and a load rating to confirm with us before ordering. Two practical notes: mounting faces should be ground or finish-milled to reach the rated travel accuracy, and lubrication planning should follow distance - at a 200 mm stroke cycling once per second, the 100 km re-grease trigger passes in about three weeks of continuous running, so the 3 to 6 month calendar interval is rarely what binds. Size 12 is also the deep end of our stock, with 924 of the 988 sets we carry, so this configuration ships quickly.
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 LRM12L1X420S10CHT FAQ
A 12 mm wide stainless rail 420 mm long, one long (L) carriage, medium preload (grade C), high accuracy (grade H) and bottom-mount fixing with a 10 mm end-hole offset. M3 mounting screws torque to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium. Ambient temperature must stay at or below 80 C with peaks to 100 C, and the carriage is re-greased every 100 km of travel or every 3 to 6 months. No load or moment rating is published for LRM - we confirm it per model before you commit.
It sets the rail mounting direction: this set bolts to the underside of the carrier, so the base must be machined to suit. Either side of the rail can serve as the datum face; with a single carriage you pick whichever is more convenient, and the surface should be ground or finish-milled. The delivery is one rail plus one long carriage, assembled and greased. No load figures ship with the product - ask us and we will confirm them for this exact model.
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 LRM12L1X420S10CHT
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.