Airtac LRM Miniature Linear Guide LRM12L2X245S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X245S10BH 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 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 LRM12L2X245S10BH
This listing is a complete LRM12 miniature linear guide set: a 12 mm wide stainless-steel rail, cut to 245 mm with a 10 mm end-hole offset, carrying two long-body carriages that share one recirculating-ball circuit each. Both carriages arrive fitted to the rail, the fixing holes run through the outer cover so the screws go in from the top, and the assembly bolts straight to a ground or finish-milled seat.
Four design points carry the value here. The ball-retention feature holds the balls in the carriage during handling, the balls themselves are Japanese-made and rated ISO 3290 G10, the double-lip seal scrapes oil and excludes fine dust, and the outer cover shields the seal strip from larger debris. Preload B removes play lightly, so the carriages run with slightly more give than the C grade but install forgivingly on a less-than-perfect surface. Because a long body engages more balls along the raceway, it also lengthens the bearing span against any tipping component in your mechanism. Load and moment ratings are not published for the LRM range; we confirm the figures for this exact model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X245S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X245S10BH |
|---|---|
| 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 | 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 LRM12L2X245S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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 LRM12L2X245S10BH Is Used
Compact pick-and-place head
A two-block long-carriage axis gives a small PCB placer a stable span across a 245 mm run, resisting the pitch of a head that picks and rotates light components.
Laser diode alignment slide
Positioning a diode module or beam splitter on a benchtop optical rail benefits from light preload B, which lets fine adjustments move without stick-slip.
Sliding guard-door interlock
A light carriage tracking a machine's sliding guard keeps an interlock switch aligned over the full door travel; the 80 C ambient ceiling covers most guarded enclosures.
Is the Airtac LRM Miniature Linear Guide LRM12L2X245S10BH the Right Guide?
Size up, not sideways, when force is substantial or cantilevered: the larger AirTAC LSH series publishes per-carriage dynamic, static and moment ratings you can calculate against, while LRM leaves those numbers to be confirmed per model. If the travel is short and the priority is crossed-roller rigidity, the LGC range is the closer match. Before ordering this BH set, run the checklist: form is a complete set (no pairing code needed), rail width 12 mm, long carriages, two per rail, 245 mm rail length, light preload B with its smoother-but-less-stiff character, accuracy grade H, top-mount fixing, and one last confirmation of the load rating with us before you commit. Specifying the long body costs nothing in availability here, since long carriages are listed as deeply as standard ones.
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 LRM12L2X245S10BH FAQ
Published: 12 mm rail width, 245 mm rail length with a 10 mm end-hole offset, two long carriages, preload B (light), accuracy grade H, top-mount mounting. Screw torque: M2 at 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 at 196, 127 and 98 N.cm respectively. Ambient temperature must stay at or below 80 C with peaks no higher than 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm them for this model on request.
A complete set: one 12 mm stainless rail, 245 mm long with a 10 mm end-hole offset, and two long carriages already fitted at light preload - you buy one part number, not a rail plus separate blocks. Because the carriages arrive on the rail, no pairing code applies at purchase. Leave them there during installation: sliding a carriage off the end or tilting it can shed balls despite the retention design, and a standalone replacement would be a carriage-only code with a matching pairing letter, of which only a few are listed.
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 LRM12L2X245S10BH
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.