Airtac LRM Miniature Linear Guide LRM12N2X270S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X270S10BH 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
- 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 LRM12N2X270S10BH
LRM12N2X270S10BH is a complete miniature guide set built around a 12 mm wide, 270 mm long stainless-steel rail with two standard carriages preloaded to grade B - light. Light preload takes the internal clearance out of the carriage, so a single block shows no perceptible rock on the rail.
The trade-off for that firmness is slightly higher running drag than the preload-free version, and grade C medium would be stiffer again but less forgiving to install. Accuracy here is H - high. In each carriage the recirculating balls are Japanese ISO 3290 G10 grade, a grade that describes the balls only. Lubrication arrives as Kyodo Yushi PS No. 2, replenished every 100 km of travel or every 3 to 6 months - a 200 mm stroke cycling once a second covers 100 km in about three weeks of continuous running, so the distance usually binds before the calendar does. The ambient limit is 80 C continuous, 100 C transient. LRM publishes no load rating, so we confirm capacity for this model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X270S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X270S10BH |
|---|---|
| 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 |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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 LRM12N2X270S10BH
| 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. |
| B | B — light 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 LRM12N2X270S10BH Is Used
Vision inspection slider
Moving a compact camera over populated circuit boards; light preload removes play so the image does not drift between frames.
Micro-dispensing gantry
Guiding a small fluid-dispensing head cycling short strokes, where the 100 km re-grease point can arrive well inside the six-month calendar window.
Component feeder rail
Advancing a light parts-feeder pusher in a small electronics assembly cell, with a 12 mm rail that slots into the frame without redesign.
Is the Airtac LRM Miniature Linear Guide LRM12N2X270S10BH the Right Guide?
Because preload B is the deciding feature, start there: it removes clearance for a firmer feel but adds running drag compared with the preload-free set, and grade C medium is stiffer still yet less forgiving to install. Then check rail width, carriage length, count, rail length, accuracy grade and mounting direction, plus the pairing code if this is a replacement. On series choice: LSH is the step up when the load is heavy or cantilevered, because it publishes dynamic, static and moment ratings per carriage that LRM simply does not have; LGC is the sideways move for short travel needing crossed-roller rigidity. Either way, confirm the load rating with us for this specific model before you order.
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 LRM12N2X270S10BH FAQ
Rail width 12 mm, rail length 270 mm, two standard carriages, preload B (light), accuracy H (high), top-mount rail with a 10 mm end-hole offset. Screw torques: M2 at 58.8 N.cm steel, 39.2 cast iron, 29.4 aluminium; M3 at 196, 127 and 98 N.cm. Maximum ambient temperature is 80 C with transients to 100 C. Re-grease every 100 km of travel or every 3 to 6 months; first-charge grease runs 0.02 to 1.0 cm3 depending on model. Load and moment ratings are not published for LRM - we confirm them for this exact model before ordering.
When the numbers matter. LSH gives you published dynamic, static and moment ratings per carriage; LRM gives you none of those figures in its catalogue, so capacity must be confirmed with us model by model. Pick LSH for substantial or overhung loads and for any axis where you must document the rating. Pick this LRM12 set for a tight 12 mm envelope, light duty and smooth preloaded motion - and because LRM12 dominates our stock (924 of 988 sets), it ships quickly. Short-travel needs that demand crossed-roller rigidity belong to LGC.
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 LRM12N2X270S10BH
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.