Airtac LRM Miniature Linear Guide LRM12N2X788S6.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X788S6.5AH 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 length788 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 LRM12N2X788S6.5AH
LRM12N2X788S6.5AH is a complete AirTAC LRM miniature linear guide set: one 12mm wide stainless steel rail, 788mm long, carrying two standard-length recirculating-ball carriages, running with no preload (code A) and machined to H high accuracy. The S6.5 marking places the first mounting holes 6.5mm from each rail end. In the box you get the rail with both carriages already fitted - a finished mechanical sliding axis with no air connection of any kind.
Like every LRM carriage, these two run on Japanese-made ISO 3290 G10 grade balls - the grade describes the balls alone, not the guide assembly - held by a ball-retention design so they stay put during handling, and wiped by double-lip seals under an outer cover that shields the seal strip from swarf. The common-rail profile means an LRM12 long carriage could share this same rail later if a rebuild needs a longer bearing span. Ambient temperature must stay at or below 80C, with peaks no higher than 100C, which rules out mounting directly beside a reflow heater or oven wall. Because load and moment ratings are not published for LRM, we confirm the figures for this exact 788mm configuration before you order - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X788S6.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X788S6.5AH |
|---|---|
| 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 | 788 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 LRM12N2X788S6.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X788 | 2 carriages on a 788 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, 788 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 LRM12N2X788S6.5AH Is Used
Benchtop glue-dispensing stage
A long twin-carriage axis carries a small dispensing valve across a PCB prototyping bench, where the two blocks on one 788mm rail keep the head square over a wide travel.
Vision inspection slide
Sliding a compact camera over a backlit light table to scan connector pins for bent leads - a light-duty job that suits a 12mm miniature rail with free-running preload.
Laboratory liquid-handling axis
Moving a small pipetting head across a row of microplate positions on lab automation built around slim 12mm rails and quiet, lightly preloaded motion.
Is the Airtac LRM Miniature Linear Guide LRM12N2X788S6.5AH the Right Guide?
Step up to AirTAC LSH when the load is substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can calculate against, which is precisely the table LRM lacks, so an LRM choice always ends with a rating we confirm for your specific model. Step across to LGC when the travel is short and the frame must not flex - crossed-roller rigidity in a small footprint. Match this set on: form (complete set, not a spare carriage), 12mm rail width, standard carriage length, two blocks, 788mm rail, preload A for free-running motion, H accuracy, top-mount fixing, and a load rating confirmed with us before committing. A rail this long rewards attention to the base: keep the seat ground or finish-milled, and note that across stocked LRM sets the price spread from about $66 to $831 is driven mainly by rail length, not by the 12mm width.
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 LRM12N2X788S6.5AH FAQ
Rail width 12mm, rail length 788mm, two standard-length carriages, preload A (none), accuracy H (high), top-mount rail. Screw torques: M2 screws 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium; M3 screws 196, 127 and 98 N.cm respectively. Ambient temperature must stay at or below 80C with transient peaks to 100C. Re-grease every 100km of travel or every 3 to 6 months; the carriages ship filled with Kyodo Yushi PS No. 2. Load and moment ratings are not published for LRM - we confirm them for this exact model on request.
It is one complete set: a single 788mm stainless steel rail with both carriages supplied fitted. It is a mechanical part, not a pneumatic component. Because the carriages arrive on the rail, avoid removing them casually - the ball retainer helps, but fitting or pulling a carriage at an angle, or in a hurry, can still drop balls, and a dummy rail is the safe way to do a swap. Bear in mind we stock only a handful of carriage-only SKUs, so most replacement carriages are 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 LRM12N2X788S6.5AH
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.