Airtac LRM Miniature Linear Guide LRM12N2X420S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X420S10BHT 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 length420 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 LRM12N2X420S10BHT
LRM12N2X420S10BHT is a complete miniature linear guide in AirTAC's LRM series: a 420 mm stainless rail, threaded for fixing from below, carrying two standard-length recirculating-ball carriages that ship mounted and greased. The 10 mm end offset positions the fixing holes sensibly close to each rail end, and the trailing T in the code is the marker for bottom-mount installation.
Across the stocked span of roughly $66 to $831, rail length and carriage count - not rail width - drive almost all of the price difference, so trimming travel before enlarging the guide is the economical order. This set keeps the light preload of grade B for free-running motion and grade H accuracy for repeatable positioning. The carriage internals rely on Japanese ISO 3290 G10 balls - a grade for the balls themselves, not for the assembled guide - protected by a double-lip seal and an outer cover. Remember the handling caveat: the ball retainer helps, but an angled insertion or a hurried swap can still drop balls, so work slowly or use a dummy rail. No load or moment ratings exist in the LRM catalogue; route the sizing question to us via the RFQ and we will confirm them for this set.
Airtac LRM Miniature Linear Guide LRM12N2X420S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X420S10BHT |
|---|---|
| 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 | 420 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 LRM12N2X420S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X420 | 2 carriages on a 420 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, 420 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 LRM12N2X420S10BHT Is Used
Laboratory autosampler deck
An autosampler moving probe heads between vial trays runs all day on a miniature rail; the 100 km re-grease interval arrives in a few weeks of continuous cycling, so plan the greasing schedule, not just the calendar one.
Fibre-optic connector polishing slide
Polishing fixtures for fibre connectors need repeatable, chatter-free strokes; light preload keeps the slide running smoothly under a light clamping load.
Electronics feeder track cam slide
A small parts-advancing slide in an electronics assembly cell suits this 420 mm bottom-mount rail, hidden fixings and all, beneath a moving feed finger.
Is the Airtac LRM Miniature Linear Guide LRM12N2X420S10BHT the Right Guide?
Size upward to AirTAC LSH whenever the load is anything more than light or hangs off the carriage, since LSH gives you per-carriage dynamic, static and moment ratings to design against - figures LRM simply does not publish. For short travels demanding crossed-roller stiffness, LGC is the cross-series alternative. Before ordering this SKU, tick off: form (complete set), 12 mm rail width, standard carriage length, two carriages, 420 mm rail, preload B (the low-drag trade against grade C rigidity), accuracy H, bottom-mount mounting - and get the load rating confirmed with us. Note also that the mounting seat must be ground or finish-milled for the rated travel accuracy to mean anything.
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 LRM12N2X420S10BHT FAQ
LRM wins on envelope: a 12 mm rail, 420 mm long, with two standard carriages is a genuinely miniature package, and grade H accuracy with preload B keeps motion smooth. LSH is the choice when you need published dynamic, static and moment ratings to size a heavier or cantilevered load - LRM offers no such table, so for this model the ratings are confirmed by us on enquiry. If your travel is short and you want crossed-roller rigidity, compare LGC before deciding.
Rail width 12 mm; rail length 420 mm; end-hole offset 10 mm; two standard-length carriages; preload B (light); accuracy H (high); bottom-mount fixing. Installation data: M2 screws at 58.8 N.cm and M3 at 196 N.cm into steel (39.2 / 127 N.cm cast iron, 29.4 / 98 N.cm aluminium), and the mounting surface must be ground or finish-milled. Environment: maximum 80 C ambient, peaks to 100 C; re-grease every 100 km or every 3 to 6 months. Load and moment ratings are not published for LRM and are confirmed per model by us.
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 LRM12N2X420S10BHT
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.