Airtac LRM Miniature Linear Guide LRM12L1X420S10AP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X420S10AP 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 lengthLong carriage
- Carriages1
- Rail length420 mm
- AccuracyP — precision 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 LRM12L1X420S10AP
This LRM12L1X420S10AP is the precision-grade variant of a 12 mm miniature linear guide: one stainless-steel rail, 420 mm long, carrying a single long carriage, ordered as a complete set and fastened from the top through the standard rail holes. Grade P is the tighter of the two accuracy grades offered on LRM, and preload grade A means the carriage runs with factory clearance rather than a fitted preload.
The long carriage is the quiet advantage here: more balls share the load and the bearing span lengthens, which helps wherever a raised or overhung element introduces a small tipping component. The ball grade is ISO 3290 G10, Japanese made - a grade for the balls only, not an accuracy class for the guide - and the double-lip seal works with an outer cover that shields the seal strip from larger debris while hiding the fixing screws. Because LRM is a common-rail design, other LRM12 carriages can share this same rail profile. Keep ambient temperature at or under 80 C, with peaks to 100 C. Load and moment ratings are not published by AirTAC for this series, so the figure for your application is confirmed per model through our RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X420S10AP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X420S10AP |
|---|---|
| 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 | Long carriage |
| Carriages supplied | 1 |
| Rail length | 420 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L1X420S10AP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X420 | 1 carriage on a 420 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. |
| P | P — precision 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 LRM12L1X420S10AP Is Used
Compact XY microscope stage
A benchtop digital-microscope stage built on 12 mm rails keeps its scan plate tracking true over a 420 mm sweep, with grade P governing how consistently the carriage runs the length.
Electronics dispensing head
A glue-dispensing head on a small electronics bench slides along this rail between two pads; the long carriage resists the slight rock a raised syringe assembly can introduce.
Cable-test probe carriage
In a cable-harness test rig, a probe carriage rides this rail to reach test points along a 420 mm stroke, guided smoothly by the recirculating-ball circuit.
Is the Airtac LRM Miniature Linear Guide LRM12L1X420S10AP the Right Guide?
If the job measures, inspects or aligns, the P grade buys running accuracy that the H grade does not, at a modest price step within the same series. When the load is heavy or cantilevered, move up to LSH, whose published per-carriage dynamic, static and moment tables let you calculate properly - something LRM cannot offer - and for very short travel where crossed-roller stiffness beats stroke length, compare LGC. Match list before ordering: complete set, 12 mm rail, long carriage, one block, 420 mm rail, preload A, accuracy P, top-mount, plus a load rating we confirm for this specific model.
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 LRM12L1X420S10AP FAQ
Published: 12 mm rail width, 420 mm rail length, one long carriage, preload grade A (none), accuracy grade P, top-mount fixing. Fastening torques: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm. Ambient temperature limit 80 C, transient peaks 100 C. Re-lubricate every 100 km of travel or every 3 to 6 months. Not published for LRM: load, moment and running-parallelism ratings - we confirm the load figure for this exact model via RFQ before you order.
Choose LRM when the envelope is tight, the duty is light and smooth, precise travel matters more than raw capacity - and note that LRM publishes no load tables, so its rating must be confirmed per model. Choose LSH when the load is substantial or cantilevered: LSH publishes dynamic, static and moment ratings per carriage that you can plug straight into a calculation. If travel is short and the priority is crossed-roller rigidity, LGC is the third option.
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 LRM12L1X420S10AP
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.