Airtac LRM Miniature Linear Guide LRM12L2X420S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X420S10BP 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 lengthLong carriage
- Carriages2
- Rail length420 mm
- AccuracyP — precision grade
- PreloadB — light 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 LRM12L2X420S10BP
LRM12L2X420S10BP is a complete miniature linear guide set with a 420 mm stainless rail, 12 mm rail width and two long recirculating-ball carriages, ordered with light preload B and the precision accuracy grade P. The 10 mm end-hole offset places the mounting holes at each rail end, and the whole assembly - rail plus both carriages - travels in one box.
Accuracy grade P is the tighter of the two LRM grades, which is why this set belongs on axes where positional consistency matters more than raw stiffness; light preload B keeps drag low for easy, free-running motion. Japanese-made ISO 3290 G10 balls run in the carriages, each sealed by a double-lip wiper beneath an outer cover, and the ball-retention design holds the balls in the block while you handle it. Do not exceed an 80 C ambient, with brief peaks to 100 C. Load and moment figures are not published for LRM - name this model in your RFQ and we will confirm the ratings for you.
Airtac LRM Miniature Linear Guide LRM12L2X420S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X420S10BP |
|---|---|
| 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 | 2 |
| 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 | B — light 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 LRM12L2X420S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X420 | 2 carriages on a 420 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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, 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 LRM12L2X420S10BP Is Used
Gauge and measuring fixture
A go/no-go check fixture that slides a part under a sensor benefits from precision grade P, where repeatable carriage position is the whole point of the axis.
Laser module alignment stage
Fine alignment of a diode laser or fibre coupler rewards low-drag light preload, letting small hand or screw adjustments settle without stick-slip.
Microscope sample translator
A bench microscope stage carrying slides or small fixtures across a 420 mm run uses the stainless rail and sealed carriages in clean laboratory air.
Is the Airtac LRM Miniature Linear Guide LRM12L2X420S10BP the Right Guide?
Checklist for this code: complete set form, 12 mm rail width, 420 mm rail, two long carriages, preload B - chosen for low running drag, though it flexes more than grade C under a tipping load - accuracy P, and top-mount fixing. If the application needs published ratings to size against, LSH supplies dynamic, static and moment figures per carriage that LRM simply does not list, so use LSH whenever load or cantilever dominates the design. For a short-stroke axis where crossed-roller rigidity is the goal, LGC is the natural cross-check. Confirm the load rating of this specific model with us before ordering.
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 LRM12L2X420S10BP FAQ
Published: 12 mm rail width, 420 mm rail length, two long carriages, light preload B, precision accuracy P, top-mount fixing and a 10 mm end-hole offset. M3 screws take 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. The ambient ceiling is 80 C with transient peaks to 100 C, and re-grease falls due every 100 km of travel or every 3 to 6 months. Not published: load, moment and speed ratings - LRM lists none, and we confirm the load figure for this model when you enquire.
You get the full set - 420 mm rail and two long carriages together. Within stocked LRM12 sets the price spread, roughly $66 to $831, is driven almost entirely by rail length and carriage count rather than width, and a 420 mm rail places this set mid-range rather than at the top. Long carriages are stocked as deeply as standard ones, and 420 mm sits inside the 40 to 995 mm stocked length span. Precision grade and preload B are both regular stock options, so nothing here is a special build.
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 LRM12L2X420S10BP
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.