Airtac LRM Miniature Linear Guide LRM12N2X142S8.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X142S8.5AH 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 length142 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 LRM12N2X142S8.5AH
LRM12N2X142S8.5AH ships as an assembled complete set: a 142 mm stainless-steel rail, 12 mm wide, with two standard-length ball carriages fitted, drilled 8.5 mm from each end for the mounting screws and bolted down from the top. Preload is A (none) and accuracy grade H, a configuration chosen for effortless, repeatable sliding in a compact footprint.
The two-carriage layout spreads contact over more balls along the 142 mm span and steadies the load against tipping during travel. Serviceability is a genuine design feature here: the carriages arrive pre-filled with Kyodo Yushi PS No. 2 grease, topped up through the rear lubrication hole, and the re-grease interval of 100 km of travel or 3 to 6 months is usually set by distance on short, fast strokes - a continuously cycled short stroke covers 100 km in weeks, not months. The recirculating balls are Japanese-made ISO 3290 G10 grade - that grade covers the balls only - running behind a double-lip seal under an outer cover, with a ball-retention design that reduces, but does not remove, the risk of dropped balls during carriage swaps. Ambient temperature must stay at or below 80 C, peaking no higher than 100 C. Because the manufacturer publishes no load or moment ratings for LRM, the capacity of this set is confirmed per model - ask through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X142S8.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X142S8.5AH |
|---|---|
| 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 | 142 mm |
| 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 LRM12N2X142S8.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X142 | 2 carriages on a 142 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, 142 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 LRM12N2X142S8.5AH Is Used
Optical jig retrofit
Retrofitting smooth motion to a legacy inspection jig: the 142 mm stainless rail drops into a top-mount pocket and the 12 mm width matches many existing miniature-guide footprints.
Cable flex test sled
A test sled that flexes a cable harness back and forth over a 142 mm path, where the re-grease interval - every 100 km of travel or 3 to 6 months - is set by distance on short, fast cycles.
Vision lens focus slide
A fine-focus slide for a machine-vision lens, where preload A gives free, stiction-light movement for hand tuning and the ball-retention design keeps balls seated during careful carriage service.
Is the Airtac LRM Miniature Linear Guide LRM12N2X142S8.5AH the Right Guide?
Decide between ranges before you decide between preload grades. LRM is the miniature, light-duty pick; its ratings are not in the catalogue, so ask us to confirm the load and moment figures for LRM12N2X142S8.5AH against your payload and overhang. If the application needs published per-carriage dynamic, static and moment data to design against, that is LSH territory; if the stroke is short and rigidity outranks capacity, LGC crossed-roller guides fit better. Run through the checklist before ordering: complete-set form, 12 mm rail width, standard carriage length, two carriages, 142 mm rail, preload A (none - the easiest sliding, with running clearance), accuracy H, top-mount mounting, and a confirmed load rating from us.
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 LRM12N2X142S8.5AH FAQ
A 12 mm wide stainless rail, 142 mm long, with two standard-length carriages, top-mount mounting, an 8.5 mm end-hole offset, preload A and accuracy H. Screw torque: M3 - 196 N.cm (steel), 127 N.cm (cast iron), 98 N.cm (aluminium); M2 - 58.8 / 39.2 / 29.4 N.cm. Ambient temperature must stay under 80 C, peaking no higher than 100 C. Re-grease every 100 km of travel or every 3 to 6 months - on a short stroke cycled continuously, the distance binds first. No load or moment rating is published for LRM; we confirm it per model.
One complete, assembled set: a 142 mm stainless-steel rail, 12 mm wide, with two standard-length carriages already fitted, drilled for top-mount fixing with an 8.5 mm end-hole offset, preload A and accuracy H. This is a mechanical sliding guide, not a pneumatic part - there is no bore and no air. The carriages come pre-filled with Kyodo Yushi PS No. 2 grease; wipe off the rust-preventive oil and lubricate before first use. Load and moment ratings are not published for LRM and are confirmed per model on request.
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 LRM12N2X142S8.5AH
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.