Airtac LRM Miniature Linear Guide LRM12N1X220S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X220S10BHT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length220 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 LRM12N1X220S10BHT
The LRM12N1X220S10BHT is a complete miniature linear guide set from AirTAC: one stainless-steel rail, 12 mm wide and 220 mm long, carrying a single standard-length carriage that recirculates steel balls along its raceways. The trailing T in the code specifies bottom-mount rail fixing, so the fasteners sit on the underside of the rail.
Bottom mounting suits frames where the top face must stay clear or screws cannot be reached from above, such as a milled channel in a machine base. The carriage uses a double-lip seal against dust and an outer cover that shields the seal strip and hides the screw heads, and its balls are Japanese-made to ISO 3290 G10 for roundness - a ball grade, not an accuracy class for the assembly. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. The manufacturer publishes no load or moment ratings for LRM, so we confirm the figures for this exact model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X220S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X220S10BHT |
|---|---|
| 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 | 1 |
| Rail length | 220 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 LRM12N1X220S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X220 | 1 carriage on a 220 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, 220 mm |
| Carriage | Yes, 1 |
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 LRM12N1X220S10BHT Is Used
Lab microplate autosampler
A compact laboratory autosampler sliding microplates under a plate reader uses the 220 mm rail as a smooth, narrow 12 mm guideway inside a tight base plate.
Vision inspection fixture
Fixing the rail from underneath keeps the top face of a small camera inspection stage uncluttered for part fixtures and presentation pallets.
IC handler transport channel
Bottom-fixed rails sit inside the machined channel of a small semiconductor test handler where protruding screw heads would foul the device transport path.
Is the Airtac LRM Miniature Linear Guide LRM12N1X220S10BHT the Right Guide?
If the load is substantial or overhung, step up to AirTAC LSH: it is a larger series with published per-carriage dynamic, static and moment ratings you can size against, something LRM does not offer. Where travel is short but crossed-roller rigidity matters more than capacity, LGC is the cross-over choice. Before committing, tick off the checklist: complete set form, 12 mm rail width, standard carriage length, single-carriage count, 220 mm rail length, light preload (B), high accuracy (H), bottom-mount direction - and a load rating confirmed with us first. Grade B trades a little stiffness for smoother, lower-friction running than medium preload C would give.
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 LRM12N1X220S10BHT FAQ
This set has a 12 mm wide stainless rail, 220 mm long, with one standard-length carriage, light preload (B), high accuracy (H) and bottom-mount fixing. Screw torques are 58.8 N.cm into steel, 39.2 N.cm into cast iron and 29.4 N.cm into aluminium for M2, and 196, 127 and 98 N.cm respectively for M3. Ambient temperature must not exceed 80 C with peaks to 100 C, and re-greasing falls due every 100 km of travel or every 3 to 6 months. Basic dynamic, static and moment ratings are not published for LRM - send the RFQ and we confirm the figures for this model.
The ball-retention design holds the balls during normal handling, but it is a feature, not a guarantee: angling the carriage onto the rail or swapping it hastily can still drop balls, so work steadily and consider a dummy rail for field replacements. Keep the carriage clear of inclined rails, where it can slide under its own weight, and never strike the rail - damage can be invisible yet still cost accuracy and life.
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 LRM12N1X220S10BHT
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.