
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X170S10APT 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.
The LRM12N1X170S10APT is a complete miniature linear guide: one stainless-steel rail 12 mm wide and 170 mm long with a 10 mm end-hole offset, carrying a single standard-length recirculating-ball carriage. Everything needed to bolt it down and move is in the box. The trailing T in the code means the rail mounts from below - screw access comes through the rail underside, which suits frames where the top face must stay clear for optics, tooling or product. As a precision-grade (P) set with preload A, meaning no preload at all, it runs with the least drag in the family, ideal for hand-tuned stages or low-power drives.
Design points worth knowing: the common-rail profile lets other LRM12 carriages run on this same rail, the ball-retention feature keeps balls with the carriage during handling (though fitting at an angle or hasty swaps can still drop balls, so plan a dummy rail for field work), the balls themselves are ISO 3290 G10 grade and Japanese made, and a double-lip seal with an outer cover shields the raceway from debris. Ambient temperature must stay at or below 80 C, peaks no higher than 100 C - a real constraint next to a laser driver or heated optical mount. One budgeting note: across the stocked LRM12 range, price tracks rail length far more than rail width, so trimming travel is the cheapest way to cut cost. Load and moment ratings are not published for LRM; we confirm them for this exact model on request - send the RFQ first.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X170S10APT |
|---|---|
| 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 | Standard 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. |
| N | Standard 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.
A compact lab fixture that steps a camera lens under a bench microscope benefits from the free-running, precision-grade carriage when an operator positions parts by hand.
On a small probe card carrier, the bottom-mounted rail keeps the top surface unobstructed so probes and wiring pass cleanly over the guide.
A 170 mm adjustment slide for steering mirrors in a benchtop laser setup, where zero preload gives the smoothest fine positioning.
If the load is substantial or cantilevered, step up to LSH instead: it publishes per-carriage dynamic, static and moment ratings you can actually size against, which LRM does not. For short travel where crossed-roller rigidity matters more than stroke, LGC is the tighter cross-series choice. Before ordering, check the checklist: form (complete set), rail width 12 mm, standard carriage length, one block, 170 mm rail, preload A (free-running but the least rigid option - installation accuracy carries the alignment), accuracy P, bottom-mount direction, and confirm the load rating with us before committing.
Quick checklist
This is a complete set: a 12 mm wide stainless-steel rail, 170 mm long with a 10 mm end-hole offset, one standard-length carriage, preload A (none), accuracy grade P (precision), and bottom-mount rail fixing. M2 screws torque to 58.8 N.cm in steel, 39.2 N.cm in cast iron, 29.4 N.cm in aluminium; M3 screws to 196, 127 and 98 N.cm respectively. Ambient temperature must not exceed 80 C (transient peaks 100 C). Re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published by the manufacturer for LRM - we confirm them per model before you order.
The box contains the full set - rail plus one fitted carriage - so nothing else is required to install. Swapping the carriage later is possible because of the common-rail design, but the ball-retention feature is a handling aid, not a guarantee: angle the carriage onto the rail or swap it quickly and balls can still drop, which is why the manufacturer recommends a dummy rail. Note also that carriage-only SKUs are thin in our stock, so most replacement carriages are a special order - ask us 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.