Airtac LRM Miniature Linear Guide LRM12L2X445S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X445S10CHT 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 length445 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 LRM12L2X445S10CHT
Order LRM12L2X445S10CHT and you receive the bottom-mount version of this 12 mm miniature guide: a 445 mm stainless-steel rail secured to the underside of the mounting surface, with two long carriages factory-set to preload C and accuracy H. The visible top face of your machine plate stays clear of screw heads, and either long edge of the rail can serve as the datum.
Because the fixing is hidden, preparation matters more: the seat should be ground or finish-milled, and the catalogue's edge-distance rows (Q1 2 to 5 mm, Q2 1.2 to 3.2 mm, H1 1.5 to 3.5 mm, corner radius up to 0.5 mm, quoted per size) must be met as a set. Ball retention keeps the balls in the carriage during handling, though a carriage offered at an angle or swapped in haste can still shed them, so plan a dummy rail if carriages will be changed in the field. Inside, Japanese-made ISO 3290 grade G10 balls - the grade covers the balls themselves - run the common-rail profile behind a double-lip seal and outer cover, and ambient temperature must stay within 80 C. Size 12 dominates our stock (924 of 988 stocked LRM sets), so this configuration ships quickly; load and moment figures are confirmed per model via the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X445S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X445S10CHT |
|---|---|
| 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 | 445 mm (spliced sections) |
| 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 LRM12L2X445S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X445 | 2 carriages on a 445 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, 445 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 LRM12L2X445S10CHT Is Used
Under-deck AOI camera slide
An automated optical inspection rig in an electronics plant needs its camera rail bolted beneath the machine table, where screws cannot be driven from above - this bottom-mount set keeps the working face clean.
ICT tray shuttle
A fixture that shuttles PCB trays beneath an in-circuit test head runs two long carriages on one 445 mm rail, steadying the tray against tipping along the stroke.
Laser alignment bench
On a bench where a diode-laser module is aligned to a fiber port, the hidden fixing leaves an unbroken top surface for the beam path and optics.
Is the Airtac LRM Miniature Linear Guide LRM12L2X445S10CHT the Right Guide?
Go up a class when load or cantilever becomes real: AirTAC LSH carries published dynamic, static and moment ratings for each carriage, which is exactly what LRM lacks, so heavy or overhung duties belong there. For a short stroke where crossed-roller rigidity beats travel length, LGC is the alternative worth pricing. This code, checked item by item: complete set, 12 mm rail width, long carriage, two blocks, 445 mm rail length, preload C (medium - a stiffer axis, but it asks more of a properly prepared seat), accuracy H, bottom-mount fixing, 10 mm end-hole offset. Spare carriages are matched by the pairing code stamped on the original part. Before you freeze the design, ask us to confirm the load and moment figures for this exact model.
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 LRM12L2X445S10CHT FAQ
LRM12L2X445S10CHT is a complete set: 12 mm rail width, 445 mm rail length, two long carriages, preload C (medium), accuracy H (high), fixed from below. Use M2 screws at 58.8 N.cm into steel, 39.2 N.cm into cast iron or 29.4 N.cm into aluminium; M3 screws take 196, 127 and 98 N.cm respectively. Keep ambient temperature at or under 80 C with transients no higher than 100 C, and re-grease every 100 km of travel or every 3 to 6 months, whichever comes first. AirTAC publishes no load or moment ratings for LRM; we confirm the figures for this model on request.
Choose LRM when envelope size and smooth light-duty motion drive the design, as here with a 12 mm rail. Move to LSH when the load is heavy or overhung, because LSH has a published table of dynamic, static and moment ratings per carriage that you can actually size against - LRM has none. For very short travel needing crossed-roller stiffness, LGC is the better match. Either way, send the load, moment and duty data with your RFQ and we will confirm the right model.
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 LRM12L2X445S10CHT
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.