Airtac LRM Miniature Linear Guide LRM12L2X345S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X345S10BHT 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 length345 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 LRM12L2X345S10BHT
This is a complete set, not a spare block: one 12 mm wide stainless-steel rail, 345 mm long, with two long LRM carriages mounted on it, ordered as a single part number. The long carriage body lengthens the ball path compared with a standard block, and having two of them on one rail resists tipping along the direction of travel.
Preload B (light) and accuracy H make this a pragmatic configuration: smooth running and good travel accuracy without the fitting care that the medium preload demands. Note that the re-grease interval is distance-based - every 100 km of travel or every 3 to 6 months, whichever comes first - and 100 km arrives faster than it sounds: a 300 mm stroke cycling twice a second can cover it in well under two months of continuous running, so a fast cycle needs grease on the calendar's shorter clock. The set ships pre-filled with Kyodo Yushi PS No. 2 grease; top up through the rear lubrication hole and never mix lubricant types. The ISO 3290 G10 grade refers to the balls themselves, Japanese made. Keep ambient temperature at or below 80 C, with momentary peaks to 100 C. LRM load and moment ratings are not published by the maker; tell us the application and we confirm the figures for this set before you commit.
Airtac LRM Miniature Linear Guide LRM12L2X345S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X345S10BHT |
|---|---|
| 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 | 345 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 | 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 LRM12L2X345S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X345 | 2 carriages on a 345 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, 345 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 LRM12L2X345S10BHT Is Used
Laser engraving mini gantry
The Y-rail of a compact engraver, where H accuracy holds spot placement over 345 mm and light preload keeps the belt drive efficient; mind the 80 C ambient limit near the laser diode.
Vial sorting shuttle
A pharmaceutical packaging line moving small vials between trays - plan greasing around the 100 km interval, which a fast cycle can reach within weeks.
Packaging machine sensor carrier
A photo-eye or checkweigher carrier on a light packaging machine, where two long blocks on one rail keep the sensor from yawing along the stroke.
Is the Airtac LRM Miniature Linear Guide LRM12L2X345S10BHT the Right Guide?
Start the selection by ruling the family in or out. Where the load is significant or cantilevered, LSH is the series to quote: it publishes dynamic, static and moment ratings per carriage, none of which exist for LRM. Where travel is short and crossed-roller rigidity wins, choose LGC. Within LRM, match every code segment to the machine: a complete set here, 12 mm rail width, two long carriages on 345 mm of rail, light preload B (accept the modest rigidity penalty in exchange for easy installation), accuracy H, top-mount fixing, and finally confirm the load rating with us - we confirm it per model rather than from a table.
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 LRM12L2X345S10BHT FAQ
A 12 mm wide, 345 mm long rail with two long carriages, light preload B, accuracy H, top-mount mounting. Screw torque: M2 screws 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws 196, 127 and 98 N.cm respectively. Ambient limit 80 C with 100 C momentary peaks. Grease interval: every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm the values for this set through the RFQ.
Included: the 345 mm rail and two long carriages as one assembled set - a complete guide, not a spare block. Not applicable here: a pairing code (only carriage-only BK codes carry one) and a black-chrome finish, which is available to order but not part of this plain set. Replacement carriages are effectively a special-order item, since carriage-only parts are only thinly represented.
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 LRM12L2X345S10BHT
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.