Airtac LRM Miniature Linear Guide LRM12N2X770S10AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X770S10AH 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 length770 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 LRM12N2X770S10AH
At 770 mm, this LRM12 set is a long rail by miniature-guide standards - the catalogue's full-length size 12 rail is 1005 mm, so this is close to the longest single piece you would specify in the series. The order code breaks down as two standard carriages on a 12 mm stainless rail, fixing holes 10 mm from each end, preload A and accuracy H, mounted from above.
A rail this length rewards careful installation: the mounting face should be ground or finish-milled, either edge can serve as the datum, and working from the datum face while checking straightness along the full length as you torque down preserves travel quality. Two carriages sharing that span hold a carried part level against tipping along the travel. The carriages run on Japanese ISO 3290 G10 balls (a grade for the balls only), sealed by double lips under an outer cover, and the assembly must stay at or below 80 C ambient - 100 C only in brief peaks. Store any spare flat, oiled and bagged, away from heat and humidity. As with every LRM model, load and moment ratings are not published; send the RFQ and we will confirm them for this set.
Airtac LRM Miniature Linear Guide LRM12N2X770S10AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X770S10AH |
|---|---|
| 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 | 770 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 LRM12N2X770S10AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X770 | 2 carriages on a 770 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, 770 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 LRM12N2X770S10AH Is Used
Automated screwdriving station
A traveling screwdriver spindle on a 770 mm bed reaches several fastening positions from one axis, the twin blocks keeping the head square to the work.
High-cycle sorting gate
Light sorting fingers or reject tabs cycling along a long miniature rail benefit from free-running preload A motion to keep cycle times honest.
Lead-forming feed table
Feeding component leads through a forming die along a 770 mm bed is a light, straight push that a 12 mm twin-carriage rail handles smoothly.
Is the Airtac LRM Miniature Linear Guide LRM12N2X770S10AH the Right Guide?
Because the stocked price range of LRM sets - roughly $66 to $831 - is driven mainly by rail length and block count on just two widths, a 770 mm two-carriage set sits toward the upper end; cutting travel is the first cost lever. Sizing-wise, LRM gives you no load table, so if the payload is heavy, offset or cantilevered, step up to LSH and use its published per-carriage dynamic, static and moment ratings. For short travel where crossed-roller rigidity matters, LGC is the cross-over choice. Confirm before ordering: set form, 12 mm rail width, standard carriage length, two blocks, 770 mm rail, preload A, H accuracy, top-mount direction - and confirm the load rating with 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 LRM12N2X770S10AH FAQ
Here it is in one place: 12 mm rail width, 770 mm rail length, two standard-length carriages, top-mount fixing with holes 10 mm from the rail ends, preload A (none), accuracy grade H. Screw torque for M3 fasteners is 196 N.cm in steel, 127 N.cm in cast iron, 98 N.cm in aluminium. Ambient ceiling is 80 C, with transients to 100 C. The carriages arrive greased with Kyodo Yushi PS No. 2 and need re-greasing every 100 km of travel or every 3 to 6 months. One deliberate gap: LRM publishes no load, moment, parallelism or speed ratings, so we confirm those for this exact model before you order.
It depends on the load path, and only you can tell us that on the RFQ. LRM gives you a slim 12 mm stainless rail, smooth ISO 3290 G10 ball running and a compact envelope, but the series publishes no load or moment table to check against. LSH does publish per-carriage dynamic, static and moment ratings, so for a heavy or overhung payload it is the series you can actually calculate with. For short travels needing crossed-roller stiffness, LGC is worth a look. Send the payload, spans and duty cycle and we will confirm whether this 770 mm set fits.
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 LRM12N2X770S10AH
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.