Airtac LRM Miniature Linear Guide LRM12L2X345S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X345S10BP 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 length345 mm
- AccuracyP — precision 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 LRM12L2X345S10BP
The LRM12L2X345S10BP is a complete miniature linear guide set from AirTAC's LRM series. In the box: one 12 mm wide stainless steel rail, 345 mm long, drilled with a 10 mm end-hole offset for the fixing screws, and two long-body recirculating-ball carriages already assembled on it and pre-filled with grease. Bolt the rail down from the top and the set is ready to run.
Preload grade B removes internal clearance for a firmer, less chattering slide than the plain A grade, while staying more tolerant of installation error than grade C. The two long carriages carry the moving head over a wider bearing span, which helps resist the tipping you get with a short block under a cantilevered tool. The recirculating balls are Japanese-made ISO 3290 G10 grade; a double-lip seal and an outer cover keep grease in and debris out. Keep ambient temperature at or below 80 C, with transient peaks no higher than 100 C. Load and moment ratings are not published for LRM: send us your applied load through the RFQ form and we will confirm the figures for this exact set before you order.
Airtac LRM Miniature Linear Guide LRM12L2X345S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X345S10BP |
|---|---|
| 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 | 345 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L2X345S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X345 | 2 carriages on a 345 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 345 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 LRM12L2X345S10BP Is Used
PCB potting and dispensing bridge
A 345 mm bridge carrying a needle-dispense head over epoxy potting on small circuit boards; the two long carriages steady the head across the full dispense stroke.
Microplate autosampler gantry
Light-duty positioning of a sampling probe over 96-well plates in laboratory automation, where a 12 mm rail keeps the deck height low.
Bench vision inspection slide
Traversing a small camera past PCB assemblies on an inspection fixture, guided smoothly by the double-lip-sealed carriages.
Is the Airtac LRM Miniature Linear Guide LRM12L2X345S10BP the Right Guide?
Across the listed LRM range prices run from about $66 to $831 while the rail width never leaves 12 and 15 mm, so length and carriage count drive the price far more than size does - trim travel before you widen the rail. If the load is substantial or cantilevered, step up to LSH, which publishes per-carriage dynamic, static and moment ratings you can actually size against; LRM publishes none. For short travel where crossed-roller rigidity matters more than stroke, look across at LGC. Before ordering this set, tick off: complete-set form, 12 mm rail width, long carriage, two blocks, 345 mm rail length, light preload B (a firmer feel, slightly more sensitive to surface finish than A), high accuracy H, top-mount fixing - and confirm the load rating with us for your specific duty.
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 LRM12L2X345S10BP FAQ
It is a complete set: a 12 mm wide stainless steel rail, 345 mm long with a 10 mm end-hole offset, carrying two long carriages in light preload B at high accuracy H, fixed from the top. Carriages leave the factory pre-filled with Kyodo Yushi PS No. 2 grease; re-grease every 100 km of travel or every 3 to 6 months. Ambient temperature must stay at or below 80 C, peaking no higher than 100 C. Torque M2 screws to 58.8 N.cm into steel, 39.2 into cast iron and 29.4 into aluminium; M3 screws to 196, 127 and 98 N.cm. Basic dynamic and static load ratings and moment ratings are not published for LRM, so we confirm them per model - ask before committing.
Yes, rail and both long carriages arrive assembled and greased. The ball-retention design keeps the balls captive during normal handling, but the manufacturer cautions that presenting a carriage at an angle or swapping it hastily can still drop balls. Only a handful of carriage-only units are listed across the range, so a replacement is usually a special order - if field swaps are planned, a dummy rail makes fitting far safer.
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 LRM12L2X345S10BP
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.