Airtac LRM Miniature Linear Guide LRM12L1X345S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X345S10CPT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- 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 LRM12L1X345S10CPT
Bottom-mount fixing is what sets the LRM12L1X345S10CPT apart: the trailing T in the code means the 345 mm stainless-steel rail, 12 mm wide, bolts down from underneath, leaving its working face unbroken. One long recirculating-ball carriage rides it, on medium preload C at precision grade P, pre-assembled and pre-greased.
Pick this version when the frame has no clearance above the rail - inside a shallow baseplate, under a fixture table, or wherever top screw heads would foul moving parts. The long carriage spreads its ball contact over a wider span, which helps any tipping component in the stack. Design points worth knowing: LRM carriages share one common rail profile, ball retention holds the balls in place during handling (though angling the carriage onto the rail or rushing a swap can still drop them - a dummy rail makes fitting easier), and the balls are Japanese-made to ISO 3290 grade G10 for roundness and wear - a ball grade only, not a standard for the assembly. A double-lip seal works with an outer cover to keep grease in and debris out. Ambient limit is 80 C, transients to 100 C. Load and moment figures are not published for LRM; ask us and we confirm them for this model.
Airtac LRM Miniature Linear Guide LRM12L1X345S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X345S10CPT |
|---|---|
| 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 | 1 |
| 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 LRM12L1X345S10CPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X345 | 1 carriage 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, 1 |
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 LRM12L1X345S10CPT Is Used
Probe-station underside rail
Fastens beneath the fixture plate of an electronics probe station, keeping the top surface clear for test clips while the long carriage translates the sample holder.
Compact pick-and-place cell
Runs inverted under the top plate of a small desktop pick-and-place gantry, where bottom fixing removes screw heads that would foul the vacuum head above.
Fiber-alignment translation slide
Positions a fiber chuck holder on a benchtop laser-fiber alignment jig, where the bottom-fixed rail keeps the optical path clear of fastener heads.
Is the Airtac LRM Miniature Linear Guide LRM12L1X345S10CPT the Right Guide?
LRM suits light-duty positioning where precision and a small envelope matter. When the load grows or hangs off a cantilever, step up to LSH - that series publishes per-carriage dynamic, static and moment ratings, which LRM deliberately does not, so sizing this set means confirming figures with us. For short travels needing crossed-roller stiffness, look across at LGC instead.
Before ordering, run the checklist: complete set; 12 mm rail width; long carriage; single carriage; 345 mm rail; preload C, the rigid choice that asks for a well-finished mounting surface; accuracy P; bottom-mount direction - plan access under the rail seat for the screws, and remember either side of the rail can serve as the datum face. If you are pairing a spare carriage to an existing rail later, the pairing letter on both parts must match. Confirm the load rating with us before committing.
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 LRM12L1X345S10CPT FAQ
12 mm rail width; 345 mm rail length; one long carriage; preload C (medium); accuracy grade P (precision); bottom-mount rail fixing; 10 mm end-hole offset. 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. Maximum ambient temperature 80 C, transient peaks 100 C. Re-grease with Kyodo Yushi PS No.2 after every 100 km of travel, or every 3 to 6 months, whichever comes first. Dynamic load, static load and moment ratings are not published for LRM; we confirm them per model on request.
The rail seats on its base and the screws go up through holes that open underneath, so the fasteners are reached from below the mounting surface. Everything else in this code matches the top-mount S10 version: same 12 mm stainless rail, same 345 mm length, same long preload-C precision carriage. You receive the complete assembled set - do not order a BK carriage-only part by mistake if you need the rail. Grind or finish-mill the mounting surface so the rated travel accuracy is achieved.
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 LRM12L1X345S10CPT
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.