
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X170S10AHT 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 T at the end of LRM12L1X170S10AHT changes how the rail goes in: this is a bottom-mount rail, fixed with screws driven from underneath the mounting base. It suits frames where the top face must stay clear - a cover, a work surface or a guide strip runs over the rail - and where proud screw heads on a top-mount rail would interfere. The set is a 12 mm wide stainless-steel rail, 170 mm long, with one long recirculating-ball carriage, preload A (none) and accuracy H (high).
Either side of the rail can serve as the datum face, and the mounting surface should be ground or finish-milled for the rated travel accuracy. Handling matters more than people expect: the ball-retention design helps, but sliding the carriage on at an angle or swapping it quickly can still drop balls, and on an inclined rail the carriage can slide off under its own weight - hold it. The ISO 3290 G10 grade applies to the Japanese-made balls, not to the assembly; a double-lip seal and outer cover look after lubrication and dust exclusion. The temperature limit is 80 C ambient with peaks to 100 C. Load and moment ratings are not published for LRM; we confirm them for this model via your RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X170S10AHT |
|---|---|
| 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 | H — high 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. |
| H | H — high 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.
Carrying a camera over small parts on a lab bench; bottom-mount fixing lets the rail sit flush beneath a mounting plate with nothing standing proud.
A light wire-guide carriage tracking across a small winding machine; the long carriage steadies the guide against lateral pull from the wire.
A small marking head traversing short distances on nameplate or packaging work; the 12 mm rail keeps the head assembly slim.
Work the decision from the mounting side first: if you cannot reach screw heads from above, this bottom-mount rail is the answer; if you can, the same code without the trailing T is simpler to service. Then step outwards: AirTAC LSH is the move when loads are substantial or cantilevered, since LSH publishes per-carriage dynamic, static and moment ratings while LRM's are confirmed per model; LGC is the move for short travel needing crossed-roller rigidity. Checklist for this SKU: complete set form, 12 mm rail width, long carriage, single block, 170 mm rail, preload A, accuracy H, bottom-mount direction - and a load rating confirmed with us before you order.
A note for anyone planning field carriage swaps: carriage-only parts are thinly listed in this range, and even with ball retention a hurried swap can drop balls, so a dummy rail is worth planning for.
Quick checklist
Rail width 12 mm, rail length 170 mm, one long carriage, preload A (none), accuracy H (high), bottom-mount rail fixing with screws driven from below. Factory grease is Kyodo Yushi PS No. 2; wipe off the rust-preventive oil and re-lubricate before first use, then top up through the rear lubrication hole every 100 km of travel or every 3 to 6 months. Screw torque: M2 at 58.8 N.cm into steel, 39.2 cast iron, 29.4 aluminium; M3 at 196, 127 and 98 N.cm respectively. Ambient limit 80 C, transient peaks 100 C. Load and moment ratings are not published for LRM - we confirm them per model on request.
A complete set: the 170 mm stainless-steel rail with its mounting holes, and one long carriage already running on it, configured exactly as the code describes. It is not a carriage-only code and needs no pairing letter. What it does not include is a load rating - LRM figures are confirmed per model. If you later need a spare carriage on its own, note that carriage-only SKUs are thinly listed in this range, so most become a special order identified by the pairing code.
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.