Airtac LRM Miniature Linear Guide LRM12N2X420S10CP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X420S10CP is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriages. 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
- Carriages2
- Rail length420 mm
- AccuracyP — precision 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 LRM12N2X420S10CP
The LRM12N2X420S10CP pairs the two demanding letters in the LRM code: precision P accuracy and medium C preload, on a 12 mm by 420 mm stainless rail carrying two standard-length carriages, fixed from the top with the end holes set 10 mm in from each rail end. It is a complete set - rail and both carriages arrive together in one box.
That combination suits a compact stage that must repeat its position closely without slop, accepting the extra sliding drag that preload C brings. The balls inside are ISO 3290 G10 grade, Japanese made - a ball grade only, not a standard for the guide assembly - and the ball-retention design keeps them captive during handling, though quick or angled carriage swaps can still drop them. Double-lip seals manage lubrication and dust exclusion, with an outer cover over the screw line. Stock depth is on your side: 924 of the 988 LRM sets we carry are size 12, so this configuration is usually on the shelf. Keep ambient temperature at or below 80 C, with peaks to 100 C. Load and moment figures are not published for LRM; send the RFQ and we confirm them for this exact model.
Airtac LRM Miniature Linear Guide LRM12N2X420S10CP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X420S10CP |
|---|---|
| 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 | 2 |
| Rail length | 420 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12N2X420S10CP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X420 | 2 carriages 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 420 mm |
| Carriage | Yes, 2 |
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 LRM12N2X420S10CP Is Used
Scanner head traverse
Sweeping a barcode or vision scanner head across a compact sortation bench, where the precision P grade holds the scan line straight stop after stop.
Benchtop dispenser upgrade
Upgrading a laboratory dispensing slide from an unguided bushing to a true recirculating-ball guide, reusing the existing top-fixing holes.
Small-parts marking slide
Guiding the punch slide of a light-duty parts-marking fixture in a workshop cell, with medium preload limiting play under the downstroke.
Is the Airtac LRM Miniature Linear Guide LRM12N2X420S10CP the Right Guide?
If the load becomes substantial or cantilevered, move up to LSH, which publishes per-carriage dynamic, static and moment ratings you can design against - LRM provides no such table. Where travel is short and crossed-roller rigidity is what you need, LGC is the better match. Fit check for this SKU: complete set, 12 mm rail, standard carriage, two carriages, 420 mm rail, medium C preload (rigid, less forgiving, more drag), precision P accuracy, top-mount fixing. For budgeting, the $66 to $831 spread across stocked LRM sets comes almost entirely from rail length and carriage count rather than width. Confirm the load rating with us for this model before ordering.
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 LRM12N2X420S10CP FAQ
Rail width 12 mm; rail length 420 mm; end-hole offset 10 mm; two standard carriages; preload C (medium); accuracy P (precision); top-mount rail. Tighten M2 screws to 58.8 N.cm in steel, 39.2 N.cm in cast iron, 29.4 N.cm in aluminium, and M3 screws to 196, 127 and 98 N.cm in the same order. First grease charge is Kyodo Yushi PS No. 2, replenished every 100 km of travel or every 3 to 6 months; quantities vary per model. Maximum ambient temperature is 80 C, with peaks to 100 C. No load or moment ratings are published for LRM, so those are confirmed per model through us.
It is a full guide set: one 420 mm stainless rail plus two standard carriages already running on it. No pairing code applies here - pairing letters belong to carriage-only codes such as LRM12BK-L-H-C, where the letter must match the rail the carriage will serve. Black chrome versions, rail-only lengths and bolt-cap packs exist in the catalogue but none are stocked; all are available to order, as are the smaller sizes 5, 7 and 9.
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 LRM12N2X420S10CP
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.