
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X470S10CHT 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.
LRM12L2X470S10CHT is the bottom-mount version of this AirTAC LRM set: one 12 mm wide stainless-steel rail, 470 mm long, with two long recirculating-ball carriages. The trailing T in the code means the rail fixes from underneath, into holes hidden by the outer cover, so the top face stays clear. Preload C gives a medium preloaded fit and accuracy grade H is high; the carriages come fitted on the rail and pre-greased.
Fixing from below suits frames where the top surface is the working face - a moving platform bolted down over the rail, for example, with no screw heads to catch a part on. The long carriages spread the ball complement over a greater length, and two of them together resist tipping along the travel. Japanese ISO 3290 G10 balls (a grade for the balls alone) recirculate behind a double-lip seal, with the outer cover keeping debris off the seal strip. Keep the ambient under 80 C, peaks to 100 C - a real constraint beside heaters or hot plates. Because LRM publishes no load or moment ratings, we confirm capacity for this exact code before ordering; send the RFQ and we will come back with the figure.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X470S10CHT |
|---|---|
| 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 | 470 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X470 | 2 carriages on a 470 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 470 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.
A bottom-fixed 470 mm rail sits flush under a sorting chute, guiding a lightweight pusher that deflects parts off a benchtop conveyor line.
Fixture plates clamp from above, so rail fixing underneath keeps the top face clear for a component-holding nest that slides in and out.
A compact labelling head traverses on the two long carriages, where concealed screws leave a smooth top surface for the mounting plate.
Bottom-mount rails like this one are stocked alongside top-mount in size 12, which dominates our range (924 of 988 sets), so lead times are short. Note that rail length, not rail width, drives the price across our stocked span of about $66 to $831 - trimming the 470 mm run is the first lever on cost, before changing size. If the load is substantial or cantilevered, move up to LSH, which publishes dynamic, static and moment ratings you can size against; LRM does not. For short travel with crossed-roller rigidity, check LGC. The checklist before ordering: set form, 12 mm rail width, long carriage, two blocks, 470 mm length, preload C, accuracy H, bottom-mount direction, and a load rating confirmed with us.
Quick checklist
Rail: stainless steel, 12 mm wide, 470 mm long, bottom-mount (code suffix T) with 10 mm end-hole offset. Carriages: two, long (L) type, preload C (medium), accuracy H (high). Installation: grind or finish-mill the mating surfaces, use the same datum side for both carriages, and torque M3 screws to 196 N.cm (steel), 127 N.cm (cast iron) or 98 N.cm (aluminium). Service: Kyodo Yushi PS No. 2 pre-fill, top up every 100 km or 3 to 6 months. Ambient limit: 80 C, 100 C brief peaks. Basic dynamic, static and moment ratings are not published for LRM - we confirm them per model on request.
The box contains the complete matched set: rail and both long carriages fitted and greased, with the ball-retention design holding the balls during normal handling. Note the manufacturer caution: inserting a carriage at an angle or swapping it quickly can still drop balls, so keep any swap slow and square - a dummy rail helps. We stock only four carriage-only SKUs across the whole range, so a spare long carriage for size 12 is normally a special order; send an RFQ and we will quote it.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.