Airtac LRM Miniature Linear Guide LRM12N2X245S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X245S10BH 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 length245 mm
- AccuracyH — high grade
- PreloadB — light 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 LRM12N2X245S10BH
The LRM12N2X245S10BH is a complete miniature linear guide set from AirTAC. In the box: one 12 mm wide stainless steel rail, 245 mm long, with two standard-length recirculating-ball carriages already running on it. This is the size that dominates our stock - 924 of the 988 LRM sets we hold are LRM12 - so this configuration ships without a special order.
The two-carriage layout is the point here: a second block on the same rail resists tipping along the direction of travel, which matters on any overhung head. When you bolt both carriages down, put the datum reference on the same side of each one; the manufacturer states this improves running accuracy. The balls inside each carriage are ISO 3290 G10 grade, Japanese made, and held by a ball-retention design so they stay put during handling. A double-lip seal scrapes oil back and keeps dust out, while the outer cover hides the screw heads. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. Load and moment ratings are not published for LRM; we confirm the figures for your exact model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X245S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X245S10BH |
|---|---|
| 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 | 245 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | B — light 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 LRM12N2X245S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X245 | 2 carriages on a 245 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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, 245 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 LRM12N2X245S10BH Is Used
Compact XY dispensing stage
Two blocks under a small dispensing head resist tipping as the stage reverses at each dot, and the 245 mm rail gives enough stroke for a circuit board index position.
SMT pick-and-place head
A light placement head overhung on a 12 mm rail is classic miniature-guide duty; the twin-carriage layout keeps the head square as it lifts and lowers over the feeder.
Automated microplate handling
Laboratory plate shuttles need smooth, repeatable travel in a low-profile envelope; light preload removes play without adding much drag to a small stepper drive.
Is the Airtac LRM Miniature Linear Guide LRM12N2X245S10BH the Right Guide?
Check the spec against your layout before ordering: form (complete set, rail included), rail width 12 mm, carriage length standard, two carriages on one 245 mm rail, preload B (light - it removes play at the cost of a little drag; C is stiffer but less forgiving, A runs free), accuracy H, top-mount fixing. Then confirm the load and moment ratings with us - they are not published for LRM and we check them per model before you commit.
If the load is substantial or hangs off a cantilever, step up to LSH instead: that series publishes per-carriage dynamic, static and moment ratings you can actually size against, which LRM does not. For short travel where crossed-roller rigidity matters more than stroke, LGC is the cross-over choice.
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 LRM12N2X245S10BH FAQ
Rail width 12 mm, rail length 245 mm, two standard-length carriages, preload B (light), accuracy H, top-mount rail. Mounting screws follow the catalogue torque table - for M3 screws, 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Ambient temperature limit is 80 C, brief peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months, whichever comes first. One gap: AirTAC publishes no load or moment ratings for LRM, so we confirm them per model - send the RFQ.
Yes - it is a complete set: one stainless steel rail with two carriages already fitted to it, greased and ready to mount. Preload B is the light grade, sitting between A (none) and C (medium); LRM offers no heavy preload. Light preload removes most play while keeping running drag low, which suits a small motorised axis.
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 LRM12N2X245S10BH
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.