Airtac LRM Miniature Linear Guide LRM12L2X145S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X145S10CH 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 length145 mm
- AccuracyH — high 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 LRM12L2X145S10CH
LRM12L2X145S10CH is a complete miniature linear guide set from AirTAC in the size 12 range. One stainless-steel rail, 145 mm long and 12 mm wide, carries two long (L) recirculating-ball carriages. There is no trailing T in the code, so the rail is top-mount, drilled for fixing screws from above, with a 10 mm end-hole offset. Preload code C (medium) and accuracy grade H (high) complete the specification. You receive the rail with both carriages fitted, each pre-filled with Kyodo Yushi PS No. 2 grease.
Medium preload is the firmest grade offered on LRM: it closes the internal clearance to resist play and vibration, at the cost of higher running drag and less tolerance of mounting-surface error, so the seating must be ground or finish-milled. The long carriages spread contact over more balls and stretch the bearing span, which helps any tipping component. The range shares one rail profile between carriage types, keeps balls captive for handling, runs ISO 3290 G10 Japanese balls for roundness and wear, and seals each carriage with a double-lip wiper under an outer cover that hides the screws. Ambient temperature must stay at or below 80 C, with transient peaks to 100 C. AirTAC publishes no load or moment rating for LRM; ask us and we will confirm the figures for this exact model before you order.
Airtac LRM Miniature Linear Guide LRM12L2X145S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X145S10CH |
|---|---|
| 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 | 145 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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 LRM12L2X145S10CH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X145 | 2 carriages on a 145 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 145 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 LRM12L2X145S10CH Is Used
Compact vision inspection stage
A benchtop camera gantry scanning PCBs over a 145 mm stroke. Medium preload holds the carriage free of drift so repeated passes land on the same pixels, and the 12 mm rail fits inside a shallow baseplate.
Benchtop pick-and-place head
A small SMT prototyping head carried on two long blocks. The extended carriage length resists the tipping moment when the head reaches out over the board edge on a short rail like this one.
Laser diode focusing slide
A fine-adjustment slide in an optics lab where the 145 mm travel sets the coarse position and a micrometer sets the last micron. High accuracy grade H keeps the running path straight along the stroke.
Is the Airtac LRM Miniature Linear Guide LRM12L2X145S10CH the Right Guide?
Size the axis honestly before you order. When the load is heavy or cantilevered, step up to LSH: that series publishes per-carriage dynamic, static and moment ratings you can calculate against, which LRM does not provide. For short travels that need crossed-roller rigidity instead of ball circulation, LGC is the better cross-over. When matching this set, tick off: form (complete set with two long carriages), 12 mm rail width, 145 mm rail length, preload C with its higher drag and stricter surface demands, accuracy H, top-mount direction, and confirm the load rating with us before committing - the figure is issued per model, not read from a table.
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 LRM12L2X145S10CH FAQ
It is a size 12 set: 12 mm rail width, 145 mm rail length, two long carriages, 10 mm end-hole offset, medium preload (C), high accuracy (H) and top-mount rail fixing. Use M3 screws at 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Ambient temperature must stay below 80 C with peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months with Kyodo Yushi PS No. 2. Load and moment ratings are not published for LRM; we confirm them for this exact model on request.
Medium preload removes play and stiffens the set against vibration and light tipping, but it raises running drag and forgives less error in the mounting surface, which must be ground or finish-milled. If your bench cannot hold that finish, the light-preload B or no-preload A versions of the same 145 mm rail are easier to live with. Whichever grade you pick, ask us to confirm the load rating for this model before you commit.
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 LRM12L2X145S10CH
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.