Airtac LRM Miniature Linear Guide LRM12N1X420S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X420S10CH 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 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 LRM12N1X420S10CH
LRM12N1X420S10CH is a complete miniature linear guide: one 420 mm stainless-steel rail, 12 mm wide, carrying a single standard-length recirculating-ball carriage, with mounting holes spaced 10 mm in from each rail end and fixings taken from the top. Rail and carriage arrive as one working unit, so nothing else is needed to make it run.
Preload C is the firmest grade offered on LRM: the balls sit under medium compression, which stiffens the carriage against rocking but punishes a poorly prepared mounting face, so grind or finish-mill the surface first. The balls in circulation are Japanese-made ISO 3290 G10 grade - a ball specification only, not a standard for the guide as a whole. A double-lip seal scrapes lubricant back where it belongs and keeps dust out, an outer cover shields the seal strip and hides the screws, and ball retention limits dropped balls during handling, though an angled or rushed carriage swap can still shed one. Keep ambient temperature at or under 80 C, with peaks no higher than 100 C - a real constraint next to a heater or a laser. Load and moment ratings are not published for LRM; we confirm the numbers for this exact model before you order, so send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X420S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X420S10CH |
|---|---|
| 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 | 420 mm |
| 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 LRM12N1X420S10CH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard 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 LRM12N1X420S10CH Is Used
Benchtop dispensing gantry
A compact adhesive or epoxy dispensing unit where the head sweeps a few hundred millimetres per pass; medium preload steadies the tip at the end of each stroke.
Optical alignment slide
Fine positioning of a laser diode mount or mirror on a small breadboard, where smooth, even travel along one 420 mm axis matters more than raw capacity.
Microplate sampler axis
A laboratory autosampler stepping between plate wells in a tight envelope, where a 12 mm rail keeps the gantry slim and the motion repeatable.
Is the Airtac LRM Miniature Linear Guide LRM12N1X420S10CH the Right Guide?
LRM12 is where our stock is deepest - 924 of the 988 sets we carry are size 12 - so this configuration ships quickly. At 420 mm the rail sits in the mid-price band; on LRM the bill is driven far more by rail length and carriage count than by width, so trimming travel is the first lever if budget bites. If your load is substantial or cantilevered, step up to AirTAC LSH instead: that series publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. Where travel is short and the job needs crossed-roller rigidity, look across at LGC. Before committing, tick the checklist: complete set, 12 mm rail, standard carriage, one block, 420 mm rail, preload C (accept the stiffer-but-less-forgiving installation), H accuracy, top-mount fixings - and confirm the load rating with us.
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 LRM12N1X420S10CH FAQ
Published: 12 mm rail width, 420 mm rail length, one standard-length carriage, preload C (medium), accuracy H, top-mount holes 10 mm from each rail end, 80 C ambient limit with 100 C peaks, re-grease every 100 km of travel or every 3-6 months. Screw torque: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm respectively. Not published for LRM: dynamic, static and moment load ratings - we confirm those per model on request.
LRM is the miniature line: a 12 mm rail here, light-duty positioning, tight envelope. LSH is a larger series whose catalogue publishes dynamic, static and moment ratings per carriage, so if you need to run sizing calculations against a known load, LSH is the honest choice. If the load is genuinely light and space is short, this LRM12 set is the better fit, and we will confirm its per-model ratings through an 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 LRM12N1X420S10CH
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.