Airtac LRM Miniature Linear Guide LRM12L2X420S10CP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X420S10CP 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 lengthLong 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 LRM12L2X420S10CP
LRM12L2X420S10CP is a complete 12 mm LRM set in the tighter of the two accuracy grades: one 420 mm stainless-steel rail 12 mm wide, two long recirculating-ball carriages, medium preload and precision (P) accuracy, top-mounted to the rail.
The P grade is the reason to pick this suffix over the H version when a measuring or imaging stage must stay true along the full stroke. The long carriage lengthens the bearing span and engages more recirculating balls, which helps an instrument carriage resist nodding. ISO 3290 G10 Japanese balls (this grade describes the balls only) run under double-lip seals with an outer cover shielding the seal strip. Surroundings must remain at or below 80 C, peaks to 100 C. The manufacturer publishes no load or moment ratings for LRM; request the RFQ and we will confirm capacity for this exact build.
Airtac LRM Miniature Linear Guide LRM12L2X420S10CP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X420S10CP |
|---|---|
| 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 | 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 LRM12L2X420S10CP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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 LRM12L2X420S10CP Is Used
Measuring microscope stage
A workshop measuring microscope traverses small turned parts on a stage built from this precision-grade guide, holding tracked position consistently over the full 420 mm.
Lens-train focus adjustment
Setting the focus spacing inside a compact laser marking head calls for repeatable slides; medium preload removes lost motion when the direction reverses.
Camera focus sled
An automated inspection cell moves a machine-vision camera on a sled guided by this set; the long carriages steady the camera through the ends of travel.
Is the Airtac LRM Miniature Linear Guide LRM12L2X420S10CP the Right Guide?
Choose this precision-grade set when the stage must hold line or focus across the stroke. Price within stocked LRM sets tracks rail length and carriage count far more than rail width - nearly the whole spread from about $66 to $831 comes from length - so trimming travel, not size, is the economical move. When the load is substantial or cantilevered, step to LSH, whose published per-carriage dynamic, static and moment ratings make real sizing possible; LRM offers none. For short strokes needing crossed-roller rigidity, LGC fits. Checklist: set form, 12 mm rail, two long carriages, 420 mm rail, medium preload (stiff, least forgiving of imperfect surfaces), P accuracy, top-mount; confirm the load rating with us, along with the pairing code on any part you are replacing.
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 LRM12L2X420S10CP FAQ
Rail width 12 mm; rail length 420 mm; two long carriages; preload C, the medium grade; accuracy P; top-mount rail. Torque 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 in those materials. Ambient temperature ceiling is 80 C with transients to 100 C, and re-greasing falls due every 100 km of travel or every 3 to 6 months. Dynamic load, static load and moment ratings are not published for LRM; we confirm them for this exact model on request.
LRM keeps the envelope small - a 12 mm rail with two long carriages fits inside compact instrument frames that a larger series cannot. LSH carries published dynamic, static and moment ratings for each carriage, which is what a cantilevered or genuinely heavy load needs for proper sizing; LRM has none published, so capacity is confirmed per model with us. LGC remains the option for short strokes where crossed-roller rigidity is the priority.
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 LRM12L2X420S10CP
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.