Airtac LRM Miniature Linear Guide LRM12L2X245S10AHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X245S10AHT 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
- AccuracyH — high 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 LRM12L2X245S10AHT
The LRM12L2X245S10AHT is a complete set: a 245 mm stainless-steel rail, 12 mm wide, with two long recirculating-ball carriages running on it. Preload grade A means the carriages run free of preload, and accuracy grade H is the high grade. The trailing T sets bottom-mount fixing, so the screws pass up from below - useful where the top face of the rail is covered by the travelling table.
With no preload, drag is at its lowest and travel feels lightest, which suits a hand-positioned or lightly driven slide; the trade is a little more play under load. Carriages share one rail profile across the LRM series, so a long and a standard carriage can run on the same rail. The balls inside are Japanese-made ISO 3290 G10 grade - a grade for the balls alone. Double-lip seals hold grease in and keep dust out; the outer cover hides the screws and protects the seal strip; ball retention limits dropped balls during handling, though a dummy rail is wise for anyone planning repeated carriage swaps, and only a handful of carriage-only SKUs are listed. Keep ambient temperature at or under 80 C, with transient peaks no higher than 100 C. Load and moment ratings are not published for LRM - send an RFQ and we will confirm the figures for this set.
Airtac LRM Miniature Linear Guide LRM12L2X245S10AHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X245S10AHT |
|---|---|
| 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 | H — high 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 LRM12L2X245S10AHT
| 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. |
| H | H — high 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 LRM12L2X245S10AHT Is Used
ICT probe fixture
A small fixture sliding a probe board over board-to-board connectors on an in-circuit test bench; free-running long carriages let an operator position the probe by hand without stick-slip.
Machine-vision camera slide
A bottom-mounted rail under an inspection camera sled in a production cell: the screws stay hidden beneath the rail, keeping the optical path and the guarding above clean.
Labelling head slide
A label applicator head riding a 245 mm rail on a packaging bench, where low drag from the unloaded preload grade helps a light belt-driven slide track smoothly.
Is the Airtac LRM Miniature Linear Guide LRM12L2X245S10AHT the Right Guide?
When the load is heavy or overhung, move up to LSH, which publishes dynamic, static and moment ratings per carriage so you can calculate margins - LRM publishes none. When travel is short and crossed-roller rigidity matters, LGC is the cross-over choice. Before ordering, tick every box: complete set, 12 mm rail width, long carriage, two carriages, 245 mm rail length, preload A (free-running), accuracy H, bottom-mount rail. If you are matching a spare carriage instead, work from the pairing code. Nearly every LRM set listed is size 12, which is where the choice of lengths and grades is deepest. Confirm the load rating with us before you commit - we check it against your duty.
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 LRM12L2X245S10AHT FAQ
Rail width 12 mm; rail length 245 mm; two long carriages; preload A, meaning none; accuracy H, the high grade; rail mounts from below through hidden screws. Torque M3 screws to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium, and grind or finish-mill the mounting face first. Ambient temperature must stay at or below 80 C, with peaks to 100 C; re-grease 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.
Yes - this code is a complete set: one 245 mm stainless-steel rail with two long carriages fitted, each pre-filled with Kyodo Yushi PS No. 2 grease. Nothing else is needed for a single-rail slide. Carriage-only versions exist in the LRM range but are thinly listed; if you need just a replacement carriage, match its pairing code to the rail and ask us to source it.
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 LRM12L2X245S10AHT
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.