
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X495S10BP 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.
LRM12N1X495S10BP is a complete miniature guide set built around a 12 mm wide stainless-steel rail, 495 mm long, with a single standard recirculating-ball carriage riding it. The P at the end of the code is the precision accuracy grade, and the blank mounting position means screws go in from the top. What arrives is the matched pair - rail and carriage assembled, pre-filled with grease.
Two details earn their place here. Grade P accuracy suits work where a measuring fixture or an optical axis has to stay true along the full 495 mm run, and preload B takes up internal clearance lightly so motion stays smooth rather than notchy. The balls inside the carriage are Japanese, made to ISO 3290 G10 for roundness and held by a retention design that keeps them captive during handling - though the maker still warns that angled insertion or hurried swaps can drop them, so plan careful fitting. Worth knowing before you budget: the price of an LRM set is driven far more by rail length than by rail width, so a near-half-metre rail like this sits at the upper end of the range. There is no published load rating for LRM; we confirm the figure for this model through your RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X495S10BP |
|---|---|
| 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 | 495 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | B — light 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. |
| 1X495 | 1 carriage on a 495 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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.
A small calibrating slide positioning a dial indicator or fibre probe along a workpiece. Precision grade P keeps the running line consistent over the whole 495 mm rail, which matters when the fixture itself becomes the reference.
A dispensing or placement head traversing populated PCBs. Preload B removes play so the head does not lag at each direction change, and the slim 12 mm rail keeps the gantry frame compact.
Positioning a low-power laser diode or sensor in a benchtop optical rig. Mind the environment: the ambient limit is 80 C with peaks to 100 C, so keep the carriage clear of heat rising off the source or its driver board.
Start by matching the form: this is a set, not a carriage, so you receive rail and block together. Then size the duty. If your load is significant or hangs off a cantilever, move to AirTAC LSH - it publishes dynamic, static and moment ratings per carriage you can design against, while LRM publishes none and its capacity must be confirmed model by model. If the travel is short and crossed-roller stiffness is the priority, compare with LGC instead. Finish with the checklist: set form, 12 mm rail width, standard carriage length, one carriage, 495 mm rail length, light preload B, precision grade P, top-mount screws, and a load rating confirmed with us. Ask us to verify that figure before you freeze the design.
Quick checklist
A 12 mm stainless-steel rail, 495 mm long, with one standard-length carriage, precision accuracy grade P, light preload B and top-mount rail fixing. Screw torque: M2 at 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 at 196, 127 and 98 N.cm. Ambient temperature must not exceed 80 C, with transient peaks to 100 C, and lubrication is refreshed every 100 km of travel or every 3-6 months. Load and moment ratings are not published for the LRM series - we confirm them per model through an RFQ.
A complete matched set: the 495 mm stainless rail and one pre-greased standard carriage, assembled, with the rail drilled for top-mount screws. No separate carriage, rail section or bolt caps are included, and nothing further is needed to use it as a working guide. What is not included is a published load rating - LRM has none, so confirm the figure with us for this model before ordering.
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.