Airtac LRM Miniature Linear Guide LRM12L1X345S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X345S10BPT 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
- 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 LRM12L1X345S10BPT
LRM12L1X345S10BPT is a complete 12 mm miniature guide set with a 345 mm stainless-steel rail and one long carriage. The trailing T changes how it goes in: fixing screws pass up through the rail into the base, so the rail is mounted from underneath rather than clamped down from above. One set, seals and factory grease included - and this is a rolling mechanical guide, not a pneumatic part.
Bottom-mounting earns its place on machines where the top face has to stay clear - under a microscope, inside a tight channel, flush with a table surface. The long carriage spreads its recirculating balls over a wider span, damping pitch on a single-block set like this one. Accuracy P and light preload B give free, repeatable motion; the balls are ISO 3290 G10 Japanese-made, a grade for the balls alone and not for the assembly. Keep ambient temperature at or under 80 C, peaking no higher than 100 C. AirTAC publishes no load or moment ratings for LRM - we confirm them per model, so send the RFQ first.
Airtac LRM Miniature Linear Guide LRM12L1X345S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X345S10BPT |
|---|---|
| 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 | 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 LRM12L1X345S10BPT
| 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. |
| 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, 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 LRM12L1X345S10BPT Is Used
Vision inspection camera slide
A line camera or ID reader riding beneath a conveyor frame, where there is no room to reach screws from above. Bottom-mount fixings let the rail sit flush inside the frame channel.
Fiber-optic connector inspection fixture
Polished connector ends pass under a scope on a sliding holder. Accuracy grade P keeps the holder square to the optics while the 12 mm rail tucks beneath the stage.
Wafer test station carriage replacement
Servicing a bottom-mounted guide inside an older test fixture. Ball retention helps during the swap, but fit the new carriage slowly and squarely - or use a dummy rail - because balls can still drop if it goes on at an angle.
Is the Airtac LRM Miniature Linear Guide LRM12L1X345S10BPT the Right Guide?
Cross-check the mounting direction before anything else: this T-suffix rail fixes from below, and swapping to a top-mount part late means re-machining. When the load is more than a few light parts or hangs off a cantilever, move up to LSH, which publishes per-carriage dynamic, static and moment ratings you can calculate with - LRM gives you none of those on paper. Short travel needing crossed-roller stiffness points across to LGC instead. Your checklist for this SKU: complete set, 12 mm rail, long carriage, one block, 345 mm length, preload B with its easier-running but looser fit, accuracy P, bottom-mount - and a confirmed load rating from us before you buy.
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 LRM12L1X345S10BPT FAQ
Rail width 12 mm and rail length 345 mm; one long carriage; preload B (light); accuracy P (precision); bottom-mount rail with T-suffix fixings from below. Mount on a ground or finish-milled face. Catalogue screw torque: M3 at 196 N.cm steel, 127 cast iron, 98 aluminium; M2 at 58.8, 39.2 and 29.4 N.cm. Ambient limit 80 C, transient peaks to 100 C. Factory grease is Kyodo Yushi PS No. 2, topped up every 100 km or every 3 to 6 months. Load and moment ratings are not published for this series - we confirm them for the exact model via RFQ.
Yes - LRM12L1X345S10BPT is a complete set: one 345 mm stainless rail, 12 mm wide, plus one long carriage already fitted to it. Nothing else is needed to run it, though the carriage is not a separate spare; carriage-only LRM parts exist but we stock only a handful, so a future swap usually means a special order.
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 LRM12L1X345S10BPT
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.