Airtac LRM Miniature Linear Guide LRM12N1X345S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X345S10BH 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 lengthStandard carriage
- Carriages1
- Rail length345 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 LRM12N1X345S10BH
LRM12N1X345S10BH is the light-preload version of the 345 mm, 12 mm-wide LRM12 set: a stainless-steel rail with one standard carriage pre-fitted, sealed at both ends with double lips and shielded by an outer cover that keeps swarf and splash off the seal strip.
Preload B places a small internal load on the balls, which removes play in the carriage without the drag of heavier grades - a sensible middle choice when a small tipping or vibration component is present. The balls are ISO 3290 G10, Japanese made, and the retention design keeps them in the carriage during fitting, though quick or angled insertion can still drop them. A 345 mm rail with one carriage sits at the affordable end of the range: across the LRM sets listed, the price spread from about $66 to $831 comes mostly from rail length and carriage count, not rail width. The 100 km re-grease interval arrives quickly on short strokes - a 200 mm stroke at one cycle per second covers it in around three weeks of continuous running - so plan lubrication access. Load ratings are confirmed per model through our RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X345S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X345S10BH |
|---|---|
| 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 | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 345 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 LRM12N1X345S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard 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. |
| H | H — high 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 LRM12N1X345S10BH Is Used
Microscope stage positioning
A metallurgical or stereo microscope stage built on this set positions specimens smoothly; light preload removes play so the image does not drift after a manual adjustment.
PCB glue dispensing axis
A dispensing head traversing a 345 mm board benefits from the sealed, covered carriage, which shrugs off adhesive mist and keeps the re-grease point accessible at the rear of the block.
Laboratory fluid calibration rig
A calibration bench sliding a sensor or cuvette along a short axis uses the light preload to hold position against small vibration without adding excessive drag to hand-driven motion.
Is the Airtac LRM Miniature Linear Guide LRM12N1X345S10BH the Right Guide?
Start the check by confirming what this code is: a complete set, 12 mm rail width, standard carriage, one piece, 345 mm long, preload B, accuracy H, top-mount rail. If your load is heavy or overhung, LSH is the better series to size from, because its catalogue lists dynamic, static and moment ratings per carriage - numbers LRM does not publish. For a short-travel axis needing crossed-roller stiffness, look at LGC. Trim travel before trimming size: across the LRM range, rail length drives the price far more than rail width does. Send the RFQ and we will confirm the load rating for this exact model before you commit.
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 LRM12N1X345S10BH FAQ
Fixed by the code and catalogue: 12 mm rail width, 345 mm rail length, one standard carriage, light preload (grade B), accuracy H, top-mount rail, an 80 C ambient limit with 100 C peaks, and re-lubrication every 100 km of travel or every 3 to 6 months using grease compatible with the factory-filled Kyodo Yushi PS No. 2. Screw seating is 58.8 N.cm for M2 in steel (39.2 cast iron, 29.4 aluminium) and 196 N.cm for M3 (127 and 98). Not published for LRM: dynamic, static and moment load ratings - we confirm those for this model via the RFQ.
The set is the complete unit: one stainless-steel rail with the single standard carriage already fitted and anchored, so there is no separate carriage ordering, no pairing code and no ball-handling to worry about. What it does not include is a load rating: LRM publishes none, so capacity is confirmed per model. Note also that carriage-only spares use a different code shape (with BK) and our carriage-only listing is thin, so if you expect to replace carriages in the field, a spare set or a dummy rail for fitting is worth ordering alongside.
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 LRM12N1X345S10BH
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.