Airtac LRM Miniature Linear Guide LRM12L2X245S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X245S10APT 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.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthLong carriage
- Carriages2
- Rail length245 mm
- AccuracyP — precision grade
- PreloadA — no preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LRM Miniature Linear Guide LRM12L2X245S10APT
The LRM12L2X245S10APT is a complete miniature guide: a 12 mm wide stainless-steel rail, 245 mm long, carrying two long recirculating-ball carriages. Accuracy is grade P and preload is grade A, so the carriages run free of preload with the finer accuracy grade on board. The trailing T means bottom-mount: screws go up through the rail into a machined channel or ledge, keeping the top face completely clear.
Bottom-mount layouts hide the fixing screws, but plan the channel first: mounting faces must be ground or finish-milled, and M3 screws take 196 N.cm in steel, 127 N.cm in cast iron or 98 N.cm in aluminium. With no preload the set runs with the least drag, and the long carriages spread the ball contact over a longer span, which steadies a tool that wants to tip. The balls are Japanese ISO 3290 G10 grade - a grade for the balls alone - seated behind double-lip seals under an outer cover that keeps debris off the seal strip. Re-greasing every 100 km matters more than the calendar: a 200 mm stroke cycling once per second reaches 100 km in roughly three weeks of continuous running. Ambient limit is 80 C, with peaks to 100 C. Load and moment ratings are not published for LRM; request them and we confirm per model.
Airtac LRM Miniature Linear Guide LRM12L2X245S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X245S10APT |
|---|---|
| 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 | 245 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 | 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L2X245S10APT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X245 | 2 carriages on a 245 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 245 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.
Where the Airtac LRM Miniature Linear Guide LRM12L2X245S10APT Is Used
Underside slide in a test handler
A fixture slide bolted beneath a plate in a semiconductor test handler, where the bottom-mount rail keeps its screws out of the component path above.
Inkjet coder head slide
An inkjet print head traversing above a conveyor line on a 245 mm rail: bottom mounting leaves the top face open for the head bracket, and the precision grade keeps the print line true.
Glovebox sample stage
A sample-positioning stage inside an inert-atmosphere glovebox for materials research, where free-running long carriages allow smooth positioning through the glove ports.
Is the Airtac LRM Miniature Linear Guide LRM12L2X245S10APT the Right Guide?
Where loads are significant or overhung, LSH is the step up - it publishes dynamic, static and moment ratings per carriage, data LRM simply does not carry. For short-travel work needing crossed-roller rigidity, cross to LGC. Ordering checklist for this code: complete-set form, 12 mm rail width, long carriage, two carriages, 245 mm rail length, preload A (free-running), precision P accuracy, bottom-mount direction. Accuracy P and bottom-mount fixing are both listed across the LRM12 range, so changing orientation does not force a change of accuracy grade. Confirm the load rating with us before you commit - we will verify it for your duty cycle.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LRM Miniature Linear Guide LRM12L2X245S10APT FAQ
Rail width 12 mm; rail length 245 mm; two long carriages; preload A, so none applied; accuracy P, the precision grade; rail mounted from below through hidden screws. M3 screws take 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium; mounting surfaces must be ground or finish-milled. Ambient temperature must stay at or below 80 C (transient peaks 100 C), with re-greasing every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model on enquiry.
A complete assembly: one 245 mm stainless-steel rail, 12 mm wide, with two long carriages already fitted and pre-filled with Kyodo Yushi PS No. 2 grease - not a carriage-only pack and no rail to order separately. Handle the carriages on assembly: the ball-retention design helps, but inserting a carriage at an angle can still drop balls, so work carefully or use a dummy rail. Before first use, wipe off the rust-preventive oil and apply lubricant. If you ever need a spare carriage on its own, match the pairing code to the rail - carriage-only listings are few, so most come as a special order.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LRM Miniature Linear Guide LRM12L2X245S10APT
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.