
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X195S10AHT 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.
LRM12L2X195S10AHT is a complete AirTAC LRM miniature linear guide set: one 12 mm wide stainless-steel rail, 195 mm long, carrying two long recirculating-ball carriages. Because the code ends in T, this rail mounts from underneath - the screws sit in counterbored holes and are reached from below, which suits frames where the top face is a working surface or is hidden by other parts. Accuracy grade is H, and preload A means the carriages run free with no built-in pre-stress.
The long carriage body spreads contact over a longer row of balls and extends the bearing span, so the pair holds a stage level against tipping along the travel. AirTAC builds the range around a rail profile shared by every LRM carriage, ball retention that keeps the balls captive during handling, double-lip seals for oil scraping and dust exclusion, and an outer cover that shields the seal strip from larger debris. The balls themselves are Japanese-made to ISO 3290 G10 - a grade for the balls alone, not for the assembly. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C, so mind this near heaters or hot process equipment. Load and moment ratings are not published for LRM; tell us your duty and we will confirm the figures for this exact model via RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X195S10AHT |
|---|---|
| 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 | 195 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. |
| 2X195 | 2 carriages on a 195 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, 195 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 benchtop camera XY stage built into a shallow baseplate: bottom-mount fixing keeps the top surface flat and unobstructed for the workpiece, while the two long carriages hold the stage plate level across the 195 mm rail.
A small autosampler shuttling microplates between deck positions: preload A gives the lightest sliding drag for a belt or lead-screw drive, and grade H accuracy keeps plate positions repeatable run after run.
A fine-adjust slide for optics benches where the component stack sits above the guide; fixing the rail from below avoids drilling through the optical plane and keeps the working face clean.
Size up to the AirTAC LSH series when the load is substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can calculate against, which LRM does not, and its larger body takes bigger demands. Where travel is short and the priority is crossed-roller rigidity, step across to LGC instead. Before ordering, tick the checklist: set versus carriage-only form, 12 mm rail width, long carriage, two blocks, 195 mm rail, preload A, accuracy H, bottom-mount direction - and confirm the load rating with us first. Worth noting: across this range the rail length, not the width, is what drives the price, so trimming travel saves more than downsizing does.
Quick checklist
Rail width 12 mm, rail length 195 mm, two long carriages on the rail, preload A (none), accuracy grade H, bottom-mount fixing with screws reached from beneath. Fixing torques: M3 screws take 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium; M2 screws take 58.8, 39.2 and 29.4 N.cm respectively. Re-grease every 100 km of travel or every 3 to 6 months. The ambient temperature limit is 80 C with peaks to 100 C. Load and moment ratings are not published for LRM - we confirm them per model before you order.
Yes - one 195 mm stainless-steel rail with both long carriages already fitted, pre-filled with Kyodo Yushi PS No. 2 grease and ready to bolt down. It is not a carriage-only part, so no separate rail purchase or pairing code is needed. Replacement carriages alone are ordered under a different BK code, and only a handful of those SKUs are carried, so treat most carriage swaps as a special order - and fit a replacement carefully or use a dummy rail, since angled or hasty insertion can still drop balls despite the retainer.
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.