
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X495S10AP 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.
LRM12L1X495S10AP is the precision-grade (P) version of a complete LRM miniature guide set: one stainless-steel rail 12 mm wide and 495 mm long, end holes offset 10 mm, with one long recirculating-ball carriage factory-fitted. Fixing is top-mount, screws entering the rail's upper face. Preload A leaves the ball circuit free of interference, so the P grade is bought for straightness of travel, not for a tighter-running feel.
Where P grade earns its keep is in work that measures as it moves: an inspection camera, a probe or an optical axis cannot tolerate the small lateral wander that a high-grade (H) rail permits. The carriage runs on ISO 3290 G10 Japanese balls - the grade applies to the balls, not to an assembly standard - retained against falling out, wiped by a double-lip seal and sheltered by an outer cover. Keep ambient temperature at or below 80 C, peaks 100 C. One commercial note: across two rail widths our stocked sets span roughly $66 to $831, so rail length and carriage count, not size, drive the price - trimming travel is the cheapest way to trim cost. No load or moment rating is published for LRM; we confirm it per model through the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X495S10AP |
|---|---|
| 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 | 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. |
| 1X495 | 1 carriage on a 495 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. |
| 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 CMM-style fixture probing aluminium housings needs the slide to track straight over its half-metre; P grade travel accuracy keeps the probe path honest.
A camera stage inspecting solder joints on PCB panels benefits from precision-grade running so the optics hold registration across the 495 mm span.
Moving slides or wafers under a laboratory objective at a steady rhythm demands low-friction, repeatable travel; preload A keeps drag minimal for smooth motor control.
If the duty involves real weight or a cantilever, move up to LSH - it is the series that publishes dynamic, static and moment ratings per carriage, so your sizing maths rests on figures rather than on confirmation emails. If travel is short and you need crossed-roller stiffness rather than ball-plain smoothness, LGC is the cross-wise alternative. This set is for light-duty positioning where travel straightness is the spec that matters most.
Run the checklist: complete set; 12 mm rail width; long (L) carriage; one block; 495 mm rail; preload A, accepting lower rigidity in exchange for free-running motion; accuracy P; top-mount; no pairing code, as carriage and rail ship together. P grade is stocked alongside H, so choosing precision here does not push you into special orders. Before you lock the design in, ask us to confirm the load and moment ratings for this specific model.
Quick checklist
Complete set: 12 mm wide stainless rail, 495 mm length, 10 mm end-hole offset, one long (L) carriage, preload A (none), accuracy P (precision), top-mount rail, M3 fixing screws torqued to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium. Environmental limit: 80 C ambient, 100 C transient peaks. Re-grease every 100 km of travel or every 3 to 6 months with a compatible grease - never mix lubricant types. Load ratings, moment ratings and running-parallelism values are not published for the LRM series; we confirm those for this model before you commit.
The set ships complete: the 495 mm stainless rail with the long precision carriage already mounted, so no pairing code is needed and nothing has to be assembled by hand. Before first use, wipe off the rust-preventive oil and apply lubricant through the hole at the carriage's rear, stroking the carriage to spread an even film. Not included: rail-only lengths, bolt caps, or a second carriage - one block is what the X1 code specifies. If you later need a replacement carriage, that is normally a special order because carriage-only stock is very thin.
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.