Airtac LRM Miniature Linear Guide LRM12N2X220S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X220S10BH 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 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 LRM12N2X220S10BH
The LRM12N2X220S10BH is a complete miniature guide set: a stainless-steel rail 12 mm wide and 220 mm long, top-mounted, carrying two standard carriages. Preload grade B applies a light internal preload, sitting between the free-running A grade and the firmer C grade, so internal clearance is reduced without the stiffer drag of a medium-preload block.
Light preload tightens up play in the running direction, which helps a head return to position repeatably, while the carriage still slides easily by hand for setup. Balls in each carriage are ISO 3290 G10 Japanese grade for roundness, protected by a double-lip seal and an outer cover over the screws and seal strip. The common-rail profile lets standard and long carriages share the same rail. Ambient temperature must not exceed 80 C, with peaks to 100 C. Load and moment ratings are not published for LRM; we confirm the rating for this exact configuration before you buy - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X220S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X220S10BH |
|---|---|
| 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 | 220 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 LRM12N2X220S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X220 | 2 carriages 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, 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 LRM12N2X220S10BH Is Used
Bench-top jig rebuilds
Maintenance teams rebuilding small welding or gluing jigs fit this set to restore smooth, low-play travel to a hand-positioned slide.
Vial-tray indexing on a packaging bench
Two carriages guide a tray shuttle that steps vial racks along a compact pharmaceutical packaging bench with reduced play.
Label-head traverse on a small coder
A print-and-apply label head rides the twin carriages across a 220 mm traverse on a compact case-coding station, returning to register each pass.
Is the Airtac LRM Miniature Linear Guide LRM12N2X220S10BH the Right Guide?
For heavy or cantilevered loads, LSH is the step up: its published per-carriage dynamic, static and moment ratings let you size on paper, which LRM cannot. Short travel with a crossed-roller rigidity requirement points across to LGC instead. Checklist: complete set, 12 mm rail width, standard carriage length, 2 blocks, 220 mm rail, preload B (light - less play than A, slightly firmer feel, still easy to fit), H high accuracy, top-mount. There is no heavy preload grade on LRM. Confirm the load rating with us before ordering.
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 LRM12N2X220S10BH FAQ
It is a complete set: 12 mm rail width, 220 mm rail length, 10 mm end-hole offset, two standard carriages, preload B (light), accuracy H (high), top-mount rail. Screw torques: M2 at 58.8 N.cm into steel, 39.2 cast iron, 29.4 aluminium; M3 at 196, 127 and 98 N.cm. Ambient limit 80 C, transient peaks 100 C. Re-grease every 100 km of travel or every 3 to 6 months - a 200 mm stroke cycling once per second reaches 100 km in roughly three weeks, so the distance binds before the calendar. Load and moment ratings are not published for LRM; we confirm them per model.
In the box: one 220 mm stainless rail and two standard carriages already mounted, pre-filled with Kyodo Yushi PS No. 2 grease. Preload B removes a little internal clearance, so the carriage feels slightly firmer than the A grade but keeps most of its free-sliding character; no heavy preload exists in this series. Across our stock, rail length and carriage count - not rail width - drive most of the price spread, so trimming travel is the easiest way to trim cost.
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 LRM12N2X220S10BH
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.