Airtac LRM Miniature Linear Guide LRM12N1X77S13.5AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X77S13.5AH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length77 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 LRM12N1X77S13.5AH
The LRM12N1X77S13.5AH is a complete set in AirTAC's LRM miniature guide family: one 12 mm wide stainless-steel rail, 77 mm long, with a single standard-length ball carriage delivered mounted and pre-greased with Kyodo Yushi PS No. 2. It is the simplest axis you can build - a rail, a block and a handful of screws - and it suits a measuring or inspection fixture where a full-size guide would dwarf the part.
The ball-retention design holds the Japanese ISO 3290 G10 balls (a ball-grade, not an assembly standard) in place during handling, but AirTAC is explicit that it is not a guarantee: slide the carriage on at an angle or swap it hastily and balls can still escape, so keep the carriage square to the rail and use a dummy rail for off-machine work. Never strike the rail - accuracy can be lost with no visible mark - and keep the assembly at or below 80 C ambient, peaking at 100 C. The common-rail profile lets you lengthen the axis later with another LRM12 carriage on the same rail. AirTAC publishes no load or moment ratings for LRM; request the figure for this model via RFQ and we will confirm it.
Airtac LRM Miniature Linear Guide LRM12N1X77S13.5AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X77S13.5AH |
|---|---|
| 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 | 1 |
| Rail length | 77 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 LRM12N1X77S13.5AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X77 | 1 carriage on a 77 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, 77 mm |
| Carriage | Yes, 1 |
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 LRM12N1X77S13.5AH Is Used
Gauge block comparison fixture
A bench comparator sliding a dial or digital indicator across a gauge block; the H accuracy grade and short 77 mm rail suit a small metrology plate setup.
Wire-bond pull test stage
A laboratory wire-bond tester advancing a sample under the pull hook in fine increments; the low-friction no-preload carriage gives gentle, repeatable motion.
Micro end-mill grinding set-up
A toolroom fixture feeding a micro end-mill past a dressing wheel by hand; the double-lip seal and outer cover help the 12 mm stainless rail shrug off grinding dust.
Is the Airtac LRM Miniature Linear Guide LRM12N1X77S13.5AH the Right Guide?
For a measuring fixture, work the checklist in order: form (this is a complete rail-plus-carriage set, not a spare block), rail width 12 mm, rail length 77 mm, one standard carriage, preload grade A (none - free and smooth, but pick light or medium instead if your fixture must show no play under reversing loads), accuracy grade H, top-mount mounting with either rail edge usable as the datum, and the S13.5 end offset for hole spacing. Mount on a ground or finish-milled surface or the travel accuracy you paid for is wasted; with several carriages on one rail, keep all datum faces on the same side. If the head on this slide cantilevers or carries real mass, size instead on AirTAC LSH, which publishes per-carriage dynamic, static and moment ratings that LRM does not; for very short travel needing crossed-roller rigidity, compare LGC. Either way, confirm the load rating with us first.
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 LRM12N1X77S13.5AH FAQ
12 mm rail width, 77 mm rail length, one standard-length carriage, preload A (none), accuracy H (high), top-mount rail fixing and a 13.5 mm end-hole offset. Torque M3 screws to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium. The ambient limit is 80 C with peaks to 100 C; re-grease through the carriage port every 100 km of travel or every 3 to 6 months. No load, moment or parallelism figures are published for LRM - we confirm them for your specific model on request.
It is possible, but treat it as delicate work. The ball-retention design keeps the ISO 3290 G10 balls captive in normal handling, yet an angled insertion or a hurried swap can still drop balls, and the manufacturer recommends a dummy rail for fitting carriages away from their own rail. Because only a few carriage-only LRM SKUs are stocked, a replacement block is usually a special order - so protect the original carriage, never dismantle it, and keep the pair together on the rail.
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 LRM12N1X77S13.5AH
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.