Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP 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 lengthStandard carriage
- Carriages2
- Rail length200 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 LRM12N2X200S12.5AP
LRM12N2X200S12.5AP is a complete AirTAC LRM set: a 12 mm wide stainless-steel rail, cut to 200 mm with fixing holes 12.5 mm from each end, and two standard recirculating-ball carriages running on it. Both blocks share the one rail, and the top-mount holes let you fasten it from above onto a ground or finish-milled face.
Two choices define this variant. Accuracy grade P is the tighter of the two LRM grades, buying truer travel for measuring or optical work. Preload grade A leaves the balls free-rolling, so drag stays low and motion feels glassy - ideal where a hand or a light actuator moves the stage, less so where any rock must be eliminated. The double-lip seal and outer cover protect the raceways from swarf and dust, ball retention holds the ISO 3290 G10 Japanese-made balls during handling, and the ambient limit is 80 C continuous with momentary peaks to 100 C. There is no published load figure for LRM: we confirm the rating for this model when you enquire.
Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP |
|---|---|
| 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 | 2 |
| Rail length | 200 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X200 | 2 carriages on a 200 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, 200 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 LRM12N2X200S12.5AP Is Used
Fibre-optic connector alignment
Polishing and connector-alignment jigs benefit from grade P travel, where wobble in the slide shows up directly in insertion-loss testing.
Electronics test head slide
A bench test head visiting pads on small PCB assemblies rides this 200 mm rail; the free A preload keeps the push force gentle on delicate boards.
Laser diode bench adjuster
Fine positioning of a laser diode or lens seat on an optical bench, where low-drag, glassy motion matters more than raw stiffness.
Is the Airtac LRM Miniature Linear Guide LRM12N2X200S12.5AP the Right Guide?
When the load is more than light, or it sits on a cantilever, move up to LSH - that series lists dynamic, static and moment ratings per carriage, so you can do the arithmetic; LRM has no published table to size from. For short travel where crossed-roller rigidity beats ball smoothness, cross-shop LGC.
Match checklist: this is a complete set with a 12 mm rail 200 mm long, two standard blocks, no preload, precision P accuracy and top-mount fixing. Budget note: across the LRM range, rail length and block count drive the price far more than rail width, so trim travel before upsizing. Service note: a 200 mm stroke cycled once per second covers 100 km in roughly three weeks of continuous running, so the re-grease clock binds on distance, not the calendar. Confirm the load rating with us before ordering.
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 LRM12N2X200S12.5AP FAQ
The rail is 12 mm wide and 200 mm long, with two standard carriages mounted from the top and fixing holes 12.5 mm in from each end. Preload is grade A (none), accuracy is grade P (precision). Torque M3 mounting screws to 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium. The factory grease is Kyodo Yushi PS No. 2, topped up every 100 km of travel or every 3 to 6 months, and the environment must stay at or below 80 C. Load and moment ratings are not published for LRM; tell us your duty and we confirm the figure for this model before you order.
You receive one complete 12 mm rail, 200 mm long, with two standard-length carriages already fitted - a matched working pair, not separate components. There is no second rail, no carriage-only spare and no mounting screws in the box. Lubricant is pre-loaded in the carriages; before first use, wipe off the rust-preventive oil and apply fresh grease. Carriage-only replacements exist as separate AirTAC codes, but our carriage-only listings are very few, so a spare usually means 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 LRM12N2X200S12.5AP
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.