Airtac LRM Miniature Linear Guide LRM12L2X120S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X120S10BP 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 length120 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 LRM12L2X120S10BP
The LRM12L2X120S10BP is a complete miniature linear guide set: one 120 mm stainless-steel rail, 12 mm wide, carrying two long (L) recirculating-ball carriages. The end mounting holes sit 10 mm in from each rail end, the carriages run the light-preload B grade and the accuracy is H (high). You receive the rail and both carriages as one matched assembly, ready to bolt down from above.
The long carriage spreads its ball complement over a longer footprint, which lengthens the bearing span and steadies any component that wants to tip on top of it. Inside, the balls are Japanese-made ISO 3290 G10 grade - a ball-quality grade, not a standard for the guide assembly - held by a ball-retention design so they stay put during handling. A double-lip seal and an outer cover protect the raceways, and the ambient temperature must stay at or below 80 C, with peaks no higher than 100 C. Load and moment ratings are not published for LRM; we confirm the figures for this exact model before you order, so send us the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X120S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X120S10BP |
|---|---|
| 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 | 120 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 LRM12L2X120S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X120 | 2 carriages on a 120 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, 120 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 LRM12L2X120S10BP Is Used
Compact XY inspection stage
Two long carriages on a 120 mm rail give a small camera stage a stable platform over a short stroke, and grade H accuracy keeps each image position repeatable.
SMD pick-and-place head
A long carriage spreads the pick head load over more balls, which steadies the nozzle as it lifts and places small components tray to board.
Laser diode alignment fixture
Light preload B keeps fine adjustments smooth by hand, while the stainless-steel rail shrugs off corrosion on a cleanroom bench.
Is the Airtac LRM Miniature Linear Guide LRM12L2X120S10BP the Right Guide?
LRM12 is the depth of this range: 924 of the 988 stocked sets are size 12, so a layout built around this rail width ships fastest. If the load is substantial or cantilevered, step up to LSH, which publishes per-carriage dynamic, static and moment ratings you can size against - LRM publishes none. If the travel is short and you need crossed-roller rigidity, look across at LGC instead. Before committing, check the form (this is a complete set, not a carriage), rail width 12, carriage length L long, count 2, rail length 120, preload B light (freer-running, but slightly less firm under a tipping moment), accuracy H, top-mount direction, and confirm the load rating with us.
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 LRM12L2X120S10BP FAQ
Rail width 12 mm; rail length 120 mm; two long carriages; preload B (light); accuracy grade H; top-mount fixing with M3 screws torqued to 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Ambient temperature must not exceed 80 C, with transient peaks to 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months starting from the factory charge of Kyodo Yushi PS No. 2. Load and moment ratings are not published for LRM - we confirm them for this exact model before you order, via the RFQ.
Pick LSH when the load is substantial or cantilevered: it publishes per-carriage dynamic, static and moment ratings you can size against. LRM publishes none of these, so its capacity is confirmed per model - we do that for you before ordering. Pick LGC when the travel is short and you need crossed-roller rigidity. Stay with this LRM12 set when the envelope is tight and smooth light-duty motion matters: 12 mm rail, 120 mm long, two long carriages, light preload, high accuracy.
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 LRM12L2X120S10BP
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.