Airtac LRM Miniature Linear Guide LRM12N1X420S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X420S10CHT 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 length420 mm
- AccuracyH — high grade
- PreloadC — medium 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 LRM12N1X420S10CHT
Order LRM12N1X420S10CHT and you receive a complete guide built for fasteners driven from underneath: a 420 mm stainless rail, 12 mm across, one standard recirculating-ball carriage, and the trailing T in the code that puts the mounting holes on the bottom face. Once installed, the screw heads sit inside the rail and the visible top surface stays clean.
That underside fixing changes how you work: the mounting face has to be ground or finish-milled before the rail is dropped into place, and either side of the rail can serve as the datum - pick one and reference everything to it. Carriage preload is C, the medium grade, so expect firm, slightly less forgiving travel. Balls are Japanese-made ISO 3290 G10; that grade describes the balls alone and not the assembled guide. Double-lip seals handle oil retention and dust, the outer cover keeps larger debris off the seal strip, and ambient temperature must not exceed 80 C, with short peaks to 100 C. If the machine sits inclined, remember the carriage can slide under its own weight once unbolted - hold it. Load and moment figures are not published for LRM; we confirm them per model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X420S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X420S10CHT |
|---|---|
| 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 | 420 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | C — medium 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 LRM12N1X420S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X420 | 1 carriage on a 420 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium 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, 420 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 LRM12N1X420S10CHT Is Used
Sliding machine shield
A protective cover sliding across a laser or CNC work zone, its guide rail bolted from below into a slot so no screw heads catch wipers or fingers.
Recessed test-rig slide
An electronics test fixture with the rail sunk into a milled channel in the base plate; bottom fixings keep the working surface flush for tidy cable routing.
Instrument base trim slide
A precision instrument sub-assembly where the guide mounts into an underside fixing arrangement and disappears from view once the base plate is fitted.
Is the Airtac LRM Miniature Linear Guide LRM12N1X420S10CHT the Right Guide?
A bottom-mount rail earns its keep where screws simply cannot be reached from above - recessed channels, sliding shields, slim extrusion pockets. This 12 mm configuration is one of the most available we sell: 924 of the 988 stocked LRM sets are size 12, and the 40-995 mm stocked length span easily covers 420 mm, so no special order is needed. Note that on LRM the price scales mainly with rail length and carriage count rather than width, which is why a 420 mm set costs more than a stubby one. If the load is heavy or overhung, move up to AirTAC LSH, whose catalogue gives per-carriage dynamic, static and moment ratings you can calculate with - LRM publishes none. For short travel needing crossed-roller stiffness, compare LGC. Checklist: complete set, 12 mm rail, standard carriage, one block, 420 mm, preload C with its installation trade-off, H accuracy, bottom-mount direction, and a load rating confirmed with us before you commit.
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 LRM12N1X420S10CHT FAQ
Published: 12 mm rail width, 420 mm rail length, one standard-length carriage, preload C (medium), accuracy H, bottom-mount holes 10 mm in from each rail end, 80 C ambient limit with 100 C peaks, re-grease every 100 km of travel or every 3-6 months. Screw torques: M2 - 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 - 196, 127 and 98 N.cm. Not published for LRM: dynamic, static and moment load ratings; we confirm those per model on request.
One complete assembled set: the 420 mm stainless rail with the standard carriage running on it, bottom-mount hole pattern, preload C and H grade as ordered. There is no second carriage and no spliced second rail section in the package. If you later want a spare carriage, note that LRM carriages and rails are matched by pairing code and our carriage-only stock is only a handful of SKUs, so most spares 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 LRM12N1X420S10CHT
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.