
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X370S10CPT 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.
Among our LRM12 sets, what moves the price is not the 12 mm rail width but the length of rail - stocked sets span a wide price band while the width barely changes, so trimming travel is the first cost lever. This code spends its 370 mm deliberately: one long carriage in medium preload C, precision grade P, bottom-mounted.
The trailing T means the fixing screws enter from beneath the 370 mm stainless rail, leaving the top face clean - useful where a cover plate or worktable bolts over the guide. Precision P is the tighter accuracy class, and medium preload C makes the sliding fit stiffer but less tolerant of alignment error, so prepare the mounting faces ground or finish-milled and observe the M3 torque figures. The carriage runs on Japanese ISO 3290 G10 balls - a grade for the balls alone - behind a double-lip seal and an outer cover, and the surroundings must stay at or below 80 C, a real constraint beside a heater or a laser. No load or moment rating is published for LRM; send the RFQ and we confirm the figure for this exact code.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X370S10CPT |
|---|---|
| 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 | 1 |
| Rail length | 370 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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. |
| 1X370 | 1 carriage on a 370 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. |
| P | P — precision grade. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 370 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.
Holding connectors true over a polish stroke; precision P grade and a preloaded long carriage keep the ferrule angle stable through each pass.
A light autosampler head traveling a fixed 370 mm path between vial trays; bottom-mount lets the deck plate sit flush over the rail.
A gentle pre-alignment slide for small wafer carriers at a bench near process equipment, where the 80 C ambient ceiling and the sealed, covered carriage earn their place.
Size this axis in that order: trim rail length before anything else, then decide whether the load honestly needs a published rating - if it does, quote LSH, which lists per-carriage dynamic, static and moment figures that LRM simply does not publish, and we verify LRM capacity model by model instead. Short, stiff, crossed-roller travel belongs to LGC. Then confirm the rest of the match: complete set with the rail included, 12 mm width, long carriage, one block, 370 mm length, preload C (rigid, tighter assembly), P accuracy, bottom-mount direction, and the load rating agreed with us before you commit.
Quick checklist
12 mm wide stainless rail, 370 mm long, one long carriage, preload C (medium), accuracy P (precision), bottom-mount, 10 mm end-hole offset. M3 screw torque: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Maximum ambient temperature 80 C with short peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. Load, moment, parallelism and speed ratings are not published for LRM; the capacity of this exact model is confirmed with us before ordering.
Carriage-only parts exist under BK codes carrying a pairing letter that must match the rail - LRM12L1X370S10CPT is not one of those; it is the full set with the 370 mm rail included. For a spare, quote the BK code printed on your original carriage; very few carriage-only codes are carried, so most are made to order. Handle spare carriages carefully: despite ball retention, inserting at an angle or swapping quickly can still drop balls, so plan on a dummy rail for swaps.
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.