
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X170S10APT 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.
LRM12L1X170S10APT combines precision accuracy (P) with a bottom-mount rail: you receive one 12 mm wide, 170 mm long stainless-steel rail and a single long carriage as a complete set. Fixing happens from underneath, so plan machine access to the screw holes on the underside; the reward is an unbroken top face for parts, sensors or workholding.
With P grade, the mounting surface does half the work - grind or finish-mill the seat, or the stated travel accuracy will not appear. Keep the datum on one side of the rail and, when a second carriage is added later, on the same side again for better running accuracy. The carriage runs on Japanese ISO 3290 G10 balls (a ball grade only), sealed by a double lip and shielded by an outer cover. Long carriages are stocked nearly as deeply as standard ones here - 512 against 475 - so this configuration carries no availability penalty. Ambient temperature stays at or below 80 C, transients to 100 C. Load and moment ratings are not in the catalogue; ask us and we confirm them for this model with your RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X170S10APT |
|---|---|
| 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 | 170 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 | A — no 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. |
| 1X170 | 1 carriage on a 170 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no 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, 170 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.
An underside-fixed rail keeps the top plate flat for seating machined housings during first-article inspection.
A precision P-grade miniature guide gives repeatable micrometer-driven positioning under a probe head in a university lab.
Machine builders bolting rails from below into aluminium baseplates get a flush top deck for product trays and sensors.
Choose deliberately across the range: LSH when loads are substantial or cantilevered, because it publishes dynamic, static and moment ratings per carriage that LRM never does; LGC when travel is short and crossed-roller rigidity is what the build needs. For this set, confirm the checklist: complete set form, 12 mm rail, long carriage, one block, 170 mm length, preload A (none), accuracy P, bottom-mount, and a per-model load rating confirmed with us before purchase. Note that M2 screws torque to 29.4 N.cm in aluminium but 58.8 N.cm in steel - set your driver accordingly.
Quick checklist
12 mm rail width; 170 mm rail length; a single long carriage; preload A (none); accuracy grade P; bottom-mount fixing; 10 mm end-hole offset. Fixing-screw torque: M2 screws take 58.8 N.cm in steel, 39.2 N.cm in cast iron, 29.4 N.cm in aluminium; M3 screws take 196, 127 and 98 N.cm in the same order. Ambient limit: 80 C, transients to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. LRM has no published load or moment ratings - we confirm both for this model before ordering.
LRM wins on compactness and light-duty smoothness, and this 12 mm bottom-mount set is squarely in that territory. LSH wins the moment the load grows or hangs off a cantilever: its catalogue prints dynamic, static and moment ratings per carriage, while LRM publishes none and each figure is confirmed per model with us. When the travel is short and you want crossed-roller stiffness, LGC is worth a look. Send the layout and duty and we will confirm the choice and the numbers.
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.