
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X495S10CPT 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.
Order LRM12L1X495S10CPT when a precision-grade slide has to bolt in from underneath: a 12 mm by 495 mm stainless-steel rail, clamped through its underside, carrying one long carriage to the P accuracy grade. Nothing sits proud on the top face, and the long body supports an instrument over more of the rail's length.
Handling deserves respect on this model. The ball-retention design keeps the Japanese ISO 3290 G10 balls in place during ordinary handling, but a carriage angled onto the rail, or one swapped too fast, can still shed them - and on an inclined mount the carriage can slide away under its own weight, so hold it. Preload C removes play for measurement-grade work; the seal is double-lipped, an outer cover screens larger debris, and the ambient must stay within 80 C. The manufacturer publishes no load or moment rating for LRM, so we confirm them for this exact set when you enquire.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X495S10CPT |
|---|---|
| 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 (spliced sections) |
| 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.
Service teams re-fitting a probe carriage on a compact measuring fixture value the bottom-mount rail, which leaves the measuring plane unobstructed while the long block supports the probe arm.
A sampler darting back and forth on a 495 mm axis covers its grease interval quickly - a 200 mm stroke at one cycle per second reaches 100 km in about three weeks of continuous running, so keep the lubrication hole accessible.
A clinical analyser shuttles small vial racks along a half-metre track under the work surface; the bottom-mount rail keeps the top of the deck flush for unhindered tray movement.
This set combines the two least forgiving choices on LRM - precision grade P and medium preload C - so plan a ground or finish-milled mounting pad and seat the bolts carefully; with the underside clamp you cannot inspect the joint after assembly, which makes surface preparation upfront even more important. If the job outgrows light duty, or the load cantilevers, switch to LSH, which publishes dynamic, static and moment ratings per carriage; LRM does not, and we confirm its figures per model. Where travel is short and crossed-roller rigidity is the priority, LGC fits better. Checklist: complete set, 12 mm rail width, long carriage, one block on a 495 mm rail, preload C, accuracy P, bottom-mount direction, and our load confirmation before you commit.
Quick checklist
12 mm stainless rail, 495 mm long, one long carriage, preload C (medium), precision accuracy P, bottom-mount rail. M3 screws: 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium. Ambient limit 80 C with transient peaks of 100 C. Lubricated at the factory with Kyodo Yushi PS No. 2; top up every 100 km of travel or every 3 to 6 months, whichever arrives first. Not published for LRM: dynamic load, static load, moment, running parallelism and speed - we confirm the ratings for this model via RFQ.
Both are rail-and-carriage linear guides, but they serve different duties. LRM is the miniature end of the range: a 12 mm rail with a long but small carriage, chosen for compactness and smooth light-duty travel. LSH is the larger series and publishes per-carriage dynamic, static and moment ratings, so you can size a heavy or cantilevered load by calculation - something LRM cannot support until we confirm the figures for your exact model. Worth knowing too: across our stocked range, rail length rather than rail width drives the price, and size 12 is stocked far more deeply than size 15.
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.