Airtac LRM Miniature Linear Guide LRM12N2X345S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X345S10BH 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 lengthStandard carriage
- Carriages2
- 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 LRM12N2X345S10BH
The LRM12N2X345S10BH is a stocked complete set: a 12 mm stainless-steel rail, 345 mm long, with two standard recirculating-ball carriages fitted. The S10 in the code sets the end-hole offset at 10 mm, and fixing is from the top - the standard mounting direction - which makes alignment and bolting down straightforward on an open machine bed.
Preload grade B puts a light internal pre-stress on the balls - Japanese-made and graded ISO 3290 G10, a ball-only grade - so the carriage runs with barely perceptible play while drag stays low. All LRM12 carriages share one rail profile, the double-lip seal holds grease in and keeps swarf out, and the outer cover protects the seal strip and hides the screws. Handle with care: the ball-retention feature reduces but does not eliminate dropped balls if a carriage is tipped onto the rail. Keep ambient temperature at or below 80 C. Load and moment ratings are not published for this series, so ask us and we will confirm the figures for this exact code.
Airtac LRM Miniature Linear Guide LRM12N2X345S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X345S10BH |
|---|---|
| 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 | 2 |
| 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 LRM12N2X345S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard 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. |
| H | H — high 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 LRM12N2X345S10BH Is Used
Small pick-and-place head rail
A desktop pick-and-place gantry moving SMT components benefits from two carriages on one rail: the pair resists the tipping moment when the head swings off-center at the pick point.
High-cycle glue dispensing slide
A dispensing head cycling over a 200 mm stroke once per second covers the 100 km re-grease interval in roughly three weeks of continuous running, so plan lubrication access into the machine frame from day one.
Compact Cartesian robot module
A small Cartesian module for electronics assembly uses this set as one axis. Light preload grade B keeps play out of the end effector without the drag that would fight a small stepper.
Is the Airtac LRM Miniature Linear Guide LRM12N2X345S10BH the Right Guide?
Compare honestly against the bigger series before you buy. AirTAC's LSH publishes dynamic, static and moment ratings per carriage in its catalogue - numbers you can calculate with - while LRM publishes none, so a heavier or cantilevered mechanism should move to LSH. Where the travel is short and you need crossed-roller stiffness, LGC is the better tool. For this code, check: set form, 12 mm rail, standard carriage, two blocks, 345 mm rail, preload B light (a touch of drag in exchange for play-free running), H accuracy, top-mount direction. Because 924 of the 988 LRM sets we stock are size 12, this configuration ships quickly - and if you confirm the load rating with us first, we can size it before it ships.
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 LRM12N2X345S10BH FAQ
Rail width 12 mm, rail length 345 mm, two standard carriages, preload grade B (light), accuracy grade H (high), top-mount fixing. Screws: M3 at 196 N.cm (steel), 127 N.cm (cast iron), 98 N.cm (aluminium); M2 at 58.8, 39.2, 29.4 N.cm. Ambient temperature must stay at or below 80 C, peaking briefly to 100 C, and the grease charge is renewed every 100 km of travel or every 3 to 6 months. Load and moment ratings are deliberately absent from the LRM catalogue - we confirm them per model when you enquire.
Choose LSH when the load is substantial or hangs off the carriage: LSH publishes per-carriage dynamic, static and moment ratings you can size against, while LRM publishes none. Choose LRM when the envelope is tight and the duty is light - the 12 mm rail width of this set fits where larger guides cannot. For short travels needing crossed-roller rigidity, look at LGC instead. Either way, send the RFQ and we will confirm the ratings for the model you pick.
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 LRM12N2X345S10BH
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.