Airtac LRM Miniature Linear Guide LRM12L1X420S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X420S10CH 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
- 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 LRM12L1X420S10CH
LRM12L1X420S10CH is a complete set built around a 420 mm stainless-steel rail, 12 mm wide, carrying one long recirculating-ball carriage, top-mount fixing, end holes 10 mm from each rail end, high accuracy H and preload grade C, the medium grade on this series.
Preload C is the rigid choice: it removes most of the internal play, which pays off when the load reverses direction or holds position, but it rolls with more drag and forgives less misalignment at installation - the mounting surface should be ground or finish-milled, and the screws torqued correctly (M2: 58.8 N.cm into steel; M3: 196 N.cm into steel, with lower values in cast iron and aluminium). The common-rail profile means other LRM12 carriages share this rail if a spare is ever needed. Balls are ISO 3290 G10, Japanese-made; seals are double-lip; an outer cover shields the screw line. Keep the ambient at or below 80 C, with transients no higher than 100 C. AirTAC publishes no load or moment ratings for LRM, so we confirm the figures for this exact model when your RFQ reaches us.
Airtac LRM Miniature Linear Guide LRM12L1X420S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X420S10CH |
|---|---|
| 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 | 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 LRM12L1X420S10CH
| 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. |
| 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 LRM12L1X420S10CH Is Used
AOI camera slide
An automated-optical-inspection camera slide on an electronics line, where medium preload holds the camera steady against direction reversals during fast indexing.
Screwdriving station feed axis
A compact screwdriving station's feed axis carrying a light driver head, using the long carriage for a steadier base over a 420 mm rail.
Lead-forming inspection stage
A component lead-inspection stage in an electronics workshop, traversed under a microscope, where the rigid C preload keeps the stage from drifting.
Is the Airtac LRM Miniature Linear Guide LRM12L1X420S10CH the Right Guide?
Let the published data drive the series choice: LSH lists per-carriage dynamic, static and moment ratings you can size a real load against, while LRM publishes none, so anything heavily loaded or cantilevered belongs on LSH. For short travels demanding crossed-roller rigidity, LGC is the cross-check. This LRM12 set with medium preload suits a compact axis where positional firmness under reversing loads matters.
Run the checklist before ordering: complete set, one long carriage, 12 mm rail width, 420 mm rail length, preload C (rigid, less forgiving, more drag than B), accuracy H, top-mount direction, 10 mm end-hole offset. Send your load and moment figures with the RFQ and we will confirm this model against them 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 LRM12L1X420S10CH FAQ
Preload C (medium) removes most internal play for firmer positioning, at the cost of higher rolling drag and tighter installation tolerances. Published figures: 12 mm rail width, 420 mm rail length, one long carriage, accuracy H, top-mount fixing, 10 mm end offset. Torque: M2 - 58.8 N.cm steel, 39.2 cast iron, 29.4 aluminium; M3 - 196 N.cm steel, 127 cast iron, 98 aluminium. Ambient limit 80 C (peaks 100 C). Re-grease every 100 km or 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model via the RFQ.
Every 100 km of travel or every 3 to 6 months, whichever comes first - and the distance can bind sooner than you think: a 200 mm stroke cycling once per second covers 100 km in roughly three weeks of continuous running. Top up through the lubrication hole at the rear of the carriage: stroke it back and forth, inject from one side, then check for an even film on the rail. Wipe off the rust-preventive oil and lubricate before first use, and never mix lubricants of different types.
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 LRM12L1X420S10CH
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.