Airtac LRM Miniature Linear Guide LRM12L2X345S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X345S10CPT 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
- 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 LRM12L2X345S10CPT
LRM12L2X345S10CPT is a complete set, not a spare part: one 12 mm stainless-steel rail, cut to 345 mm, carrying two long recirculating-ball carriages. The specification matches the top-mount version of the same code - medium preload, precision P accuracy, 10 mm end-hole offset - with one decisive difference: the trailing T calls for bottom-mounting, so the rail fixing holes are reached from underneath.
Bottom-mounting earns its place on machines where the top face is already occupied, such as a beam whose upper surface carries the product or a guide recessed into a channel. Either side of the rail can serve as the datum face, and with two carriages on one rail you should place the datum on the same side for both to hold running accuracy. Ball retention keeps the ISO 3290 G10 Japanese balls (a ball grade, not an assembly standard) from falling out during handling, though fitting the carriage at an angle can still drop one or two, so take it slowly. A double-lip seal scrapes oil and excludes dust while the outer cover shields the seal strip from larger debris. Keep ambient temperature at or below 80 C. Load and moment ratings are not published for LRM; name this model on the RFQ and we confirm them.
Airtac LRM Miniature Linear Guide LRM12L2X345S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X345S10CPT |
|---|---|
| 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 (spliced sections) |
| 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 LRM12L2X345S10CPT
| 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. |
| 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, 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 LRM12L2X345S10CPT Is Used
Retrofit under a dispensing beam
A fluid-dispensing gantry whose top face carries the needle plate can still take precision travel: bottom-mount fixing puts the guide under the beam, out of the way of splashes and product.
PCB probe-positioning carriage
Flying-probe style test rigs move light probe heads over populated boards; the precision P grade and preload-C stiffness keep the probe contact points stable between cycles.
Small pick-and-place head slide
A light pick-and-place head handling SMT components travels smoothly on the long carriages, whose extended bearing span helps when the head overhangs the rail edge.
Is the Airtac LRM Miniature Linear Guide LRM12L2X345S10CPT the Right Guide?
If the guide will see substantial or overhung loads, step across to LSH, whose catalogue carries per-carriage dynamic, static and moment ratings that LRM simply does not publish. For short travel where crossed-roller rigidity matters more than stroke, LGC is the alternative worth comparing. Match the code to the job before ordering: set form, 12 mm rail, long carriage, two blocks, 345 mm rail length, C medium preload, P precision grade, bottom-mount rail for under-surface fixing - and confirm the load rating with us.
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 LRM12L2X345S10CPT FAQ
Rail width 12 mm, rail length 345 mm, two long carriages, medium C preload, precision P accuracy and a bottom-mount rail with a 10 mm end-hole offset. Mount into a ground or finish-milled surface; M3 screws take 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium. Ambient temperature must stay at or below 80 C with peaks to 100 C. Carriages ship pre-filled with Kyodo Yushi PS No. 2 and need re-greasing every 100 km or 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model.
The complete set: one 345 mm stainless rail drilled for bottom-mounting plus the two long carriages already fitted to it, pre-greased and protected by rust-preventive oil that you wipe off before first use. No separate rail or carriage purchase is needed. If you ever need a replacement carriage alone, note that only a handful of carriage-only SKUs sit in our stock, so most are ordered specially - and the pairing code on the original must match.
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 LRM12L2X345S10CPT
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.