
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X495S10CP 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 LRM12L1X495S10CP is a complete set built around a 495 mm, 12 mm wide stainless-steel rail and a single long carriage - and the P in the code orders it to the precision accuracy grade rather than high. That tighter grade matters where a measuring probe or an optical axis must track consistently over the full 495 mm of travel.
The long carriage is a deliberate pairing with the precision grade: its extended body carries more recirculating balls and a longer bearing span, which steadies an overhanging instrument. Preload C (medium) eliminates play so repeatability is not eaten by clearance, though installation must be meticulous - ground or finish-milled surfaces are expected. The rolling elements are Japanese-made ISO 3290 G10 balls (the grade covers the balls alone), sealed by a double-lip seal under an outer cover, and the ambient ceiling is 80 C. Load and moment figures are absent from the published data; ask us and we confirm them for this exact model before you order.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X495S10CP |
|---|---|
| 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 | 495 mm |
| 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. |
| 1X495 | 1 carriage on a 495 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, 495 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.
Aligning a fibre pigtail to a photonic chip needs travel with no lost motion: precision grade P and preload C give a stage that returns to position without drifting between passes.
A long carriage carries a compact camera module across a 495 mm rail in a lens-linearity rig, its extended span resisting pitch as the focus target moves along the axis.
A small sled that bends flat flex cable back and forth over half a metre relies on smooth rolling along the stainless rail to keep the fatigue cycle count honest.
At 495 mm this set runs as one piece, roughly half of the 1005 mm full-length size 12 rail - and note that precision grade P belongs on single-section rails, because spliced long runs are restricted to grade H, so a future lengthening of the axis may bring you back to H. If the duty turns heavy or the payload cantilevers, LSH publishes dynamic, static and moment ratings per carriage that you can size from; LRM has none published and we confirm them per model. Short-travel jobs needing crossed-roller rigidity belong on LGC. Confirm before ordering: form (this is a complete set), 12 mm rail width, long carriage, one block, preload C and its installation trade-off, P accuracy, top-mount rail, and the load rating from us.
Quick checklist
Rail: 12 mm wide stainless steel, 495 mm long, top-mounted with M3 screws torqued to 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Carriage: one, long series, preload C (medium), precision accuracy P. Limits: 80 C ambient, 100 C transient peaks; re-grease after every 100 km of travel or every 3 to 6 months. Load ratings, moment ratings, running parallelism and maximum speed are not published for LRM - we confirm the figures for your model on request.
Preload C is the stiffest grade offered on LRM - there is no heavy grade in this series. It removes internal ball clearance, so a measuring or optical carriage shows no lost motion when direction reverses. The catch is tolerance: a medium-preload guide assumes flat, ground or finish-milled mounting surfaces, or the preload fights the geometry and running effort rises. If your structure is softer, preload A or B installs far more forgivingly. As for capacity, the catalogue publishes no ratings for LRM, so send an RFQ and we confirm the numbers for this exact set.
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.