Airtac LRM Miniature Linear Guide LRM12L2X270S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X270S10CPT 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 length270 mm
- AccuracyP — precision 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 LRM12L2X270S10CPT
What separates LRM12L2X270S10CPT from the same set in plain top-mount form is the trailing T: the rail mounts from below, into holes that suit a machine plate you cannot reach with a screwdriver from above - a fully covered base, a slim extrusion or an inverted carriage arrangement are the usual reasons.
The rest of the code reads like its top-mount twin: 12 mm wide stainless steel rail, 270 mm long, two long carriages, medium preload, precision grade, both carriages delivered on the rail. Mounting surfaces should be ground or finish-milled, and with two carriages on one rail the datum face should sit on the same side for both to hold running accuracy. The balls in each carriage are ISO 3290 G10, Japanese made - that grade covers the balls, not the assembly - while the double-lip seal and outer cover protect the raceways. Ambient temperature: 80 C maximum, 100 C in short peaks. Load and moment ratings are not published for LRM; we confirm them for this configuration on request. Note too that ball retention eases handling but does not make the carriage drop-proof - angle it onto a rail or swap it hastily and balls can escape, so plan a dummy rail for any field swap.
Airtac LRM Miniature Linear Guide LRM12L2X270S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X270S10CPT |
|---|---|
| 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 | 270 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L2X270S10CPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X270 | 2 carriages on a 270 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 270 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 LRM12L2X270S10CPT Is Used
Under-base slide retrofit
Retrofitting a precision slide inside a machine base with no top access: the bottom-mount holes let the rail be fixed from beneath, leaving the working surface unbroken.
Inverted camera rail
An overhead camera rail on a measuring machine, where the carriages run upside-down beneath a fixed beam: medium preload keeps the carriage from rocking under gravity.
Micro-dispensing axis
A micro-dispensing head on an electronics line dosing adhesive dots; the long carriages and twin-block layout steady the head over its 270 mm of travel.
Is the Airtac LRM Miniature Linear Guide LRM12L2X270S10CPT the Right Guide?
Check the mounting direction first: code T means the screws go in from underneath, so your structural drawing must provide access or tapped holes on the far side; the otherwise-identical top-mount LRM12L2X270S10CP is the fallback. Then run the rest of the match: complete set, 12 mm rail width, 270 mm rail length, two long carriages, medium preload, precision grade. Medium preload stiffens the running system at the cost of friction and surface-finish demands. When the load is substantial or cantilevered, LSH is the step up - it publishes the per-carriage dynamic, static and moment ratings that LRM does not. For short travel with crossed-roller rigidity, LGC. Confirm the load rating 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 LRM12L2X270S10CPT FAQ
Rail width 12 mm, rail length 270 mm, end-hole offset 10 mm, two long carriages, medium preload (C), precision accuracy (P), bottom-mount holes. Screw torques: M2 at 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 at 196, 127 and 98 N.cm respectively. The ambient limit is 80 C with transient peaks to 100 C, and lubrication is topped up every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM, so we confirm the specific figures for this model via the RFQ.
Judge by load and span. LSH publishes per-carriage dynamic, static and moment ratings you can size a substantial or cantilevered load against; LRM publishes none of these, so an LRM application has to be validated with us model by model. LGC, with crossed rollers, is the pick for short travels where rigidity per millimetre matters most. If this is a light-duty, small-envelope slide - which a 12 mm rail at 270 mm clearly is - LRM keeps the machine compact and the selection conversation simple.
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 LRM12L2X270S10CPT
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.