Airtac LRM Miniature Linear Guide LRM12N2X270S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X270S10CHT 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 lengthStandard carriage
- Carriages2
- Rail length270 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 LRM12N2X270S10CHT
LRM12N2X270S10CHT pairs the firmest preload offered in the LRM range with hidden fixing: a 12 mm wide, 270 mm stainless-steel rail bolted from underneath, carrying two standard recirculating-ball carriages under medium preload (C), accuracy grade H, with a 10 mm end-hole offset. Two carriages on one rail give the assembly its best resistance to a tipping moment along the travel - useful when the load sits ahead of the mounting plane.
Handle the carriages with care: the ball-retention design helps, but fitting a carriage at an angle or swapping it quickly can still drop balls, and a dummy rail is the practical answer - we stock only four carriage-only SKUs, so plan field swaps ahead. Balls are Japanese ISO 3290 G10 (a ball-only grade), sealed by double lips with an outer cover over the seal strip. Ambient temperature stays at or below 80 C, with peaks to 100 C. Load and moment ratings are not published for this series; we verify them for this exact configuration before you order - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X270S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X270S10CHT |
|---|---|
| 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 | Standard 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 | 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 LRM12N2X270S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard 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. |
| H | H — high 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 LRM12N2X270S10CHT Is Used
Assembly cell shuttle
Shuttles a small fixture between an operator station and a press station in a compact assembly cell, the twin carriages keeping the fixture level through each index.
Cover glass placement head
Lowers cover glass onto display panels on a compact electronics line, the bottom-fixed rail keeping the top path clear for the vacuum head above it.
Jig adjustment slide
Provides a stiff short-travel adjuster for a welding jig position pin, where preload C holds the setting against vibration without a separate lock.
Is the Airtac LRM Miniature Linear Guide LRM12N2X270S10CHT the Right Guide?
Size up to AirTAC LSH whenever the load is heavy, overhung or needs a published moment figure - LSH tables dynamic, static and moment ratings per carriage, exactly what LRM withholds. Go across to LGC when the travel is short and crossed-roller rigidity is the priority. Then check this configuration point by point: complete set, 12 mm rail, 270 mm long, two standard carriages, medium preload C, high accuracy H, bottom-mount fixing. If lower drag matters more than stiffness, the light-preload BPT variant shares the same geometry. Before committing, confirm the load rating with us - and remember the 80 C ceiling if this rail sits near a heater, an oven door or a laser.
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 LRM12N2X270S10CHT FAQ
12 mm rail width, 270 mm rail length, stainless steel; two standard carriages; medium preload (C); high accuracy (H); bottom-mount fixing; 10 mm end-hole offset. Torque figures: for M3 screws 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium; for M2 screws 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium. Ambient temperature limit 80 C, transients to 100 C. Re-grease every 100 km of travel or every 3 to 6 months, same lubricant type only. Load and moment ratings are not published for LRM - we confirm them for this model via RFQ.
A complete set. The X in the code marks a full assembly: one 270 mm stainless-steel rail with two standard carriages already fitted and pre-filled with Kyodo Yushi PS No. 2 grease. Carriage-only LRM codes carry a BK segment and a pairing letter instead - rails and carriages must share that letter - and we stock only four such SKUs, so most replacement carriages are a special order. If you are matching a spare to an existing rail, read the pairing code off the original part.
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 LRM12N2X270S10CHT
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.