Airtac LRM Miniature Linear Guide LRM12N2X220S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X220S10CH 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
- PreloadC — medium 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 LRM12N2X220S10CH
Among stocked LRM12 sets, the LRM12N2X220S10CH is the rigid option: medium preload grade C on two standard-length carriages riding a 220 mm long, 12 mm wide stainless steel rail, accuracy grade H, fixed from the top. Medium preload pulls the internal clearance down harder than grades A or B, so the carriage feels firmer under load and less prone to rattle - the trade-off is higher running friction and a mounting surface that must be genuinely flat, ground or finish-milled, because the loaded balls will follow every fault in it.
The recirculating balls are Japanese-made ISO 3290 G10 grade, sized for roundness and wear, and each carriage carries a double-lip seal plus an outer cover over the screw line to keep oil in and debris out. The rail profile is common across LRM12, so a different carriage in the size can run on this rail. Mind the environment: ambient must stay at or below 80 C with peaks no higher than 100 C - a real constraint next to a heater, an oven door or a laser head. Load and moment ratings are not published for LRM; we confirm the figures for this model before the order is committed - use the RFQ.
Airtac LRM Miniature Linear Guide LRM12N2X220S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X220S10CH |
|---|---|
| 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 | C — medium 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 LRM12N2X220S10CH
| 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. |
| C | C — medium 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 LRM12N2X220S10CH Is Used
Semiconductor test prober slide
A probe head indexing across a small test die benefits from the firmer feel of medium preload, which damps the settling wobble that light-preload slides show after each positioning move.
Automated optical inspection camera rail
An AOI camera shuttling along a 220 mm rail stops and re-positions constantly; the medium preload takes up clearance quickly at each stop so the vision system locks focus sooner.
Precision adhesive dispensing slide
A dispensing needle traversing a small workpiece holds its height better on a firmer carriage, with the twin-block layout resisting tipping along the travel as the head accelerates.
Is the Airtac LRM Miniature Linear Guide LRM12N2X220S10CH the Right Guide?
Choose grade C over B when the load tips or vibrates and you want the stiffer, less forgiving running feel; accept that it costs friction and demands a properly prepared surface. If the duty turns out to be substantial or cantilevered, this is the point to move up to LSH - that series publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not, so the figures for this set must be confirmed with us per model. For short travel needing crossed-roller rigidity, cross-check LGC. Before ordering, work through: set form, 12 mm rail width, standard carriage, 2 carriages, 220 mm rail, medium preload with its trade-off, high accuracy, top-mount direction, and a load rating confirmed with us for this exact model.
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 LRM12N2X220S10CH FAQ
In the box: one complete set - a 220 mm long, 12 mm wide stainless steel rail with two standard-length carriages factory-fitted, medium preload (C), high accuracy (H), top-mount rail fixing. Not included and not needed: no separate rail, no pairing code to match. The carriages arrive pre-filled with Kyodo Yushi PS No. 2 grease; wipe off the rust-preventive oil before first use, and re-grease every 100 km of travel or every 3 to 6 months. Do not dismantle the carriages or pull them off the rail without need - balls can drop despite the retention design. If you ever need a spare carriage on its own, note that we stock only a handful of carriage-only SKUs, so most are a special order. Load and moment ratings are not published for LRM; we confirm them per model - send the RFQ.
Quotable figures: 12 mm rail width, 220 mm rail length, 2 standard-length carriages, preload grade C (medium), accuracy grade H (high), top-mount fixing, maximum ambient temperature 80 C with transient peaks to 100 C, ISO 3290 G10 grade for the balls, M3 screw torques of 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium (M2: 58.8, 39.2 and 29.4 N.cm respectively), and re-grease intervals of 100 km of travel or 3 to 6 months. Not quotable, because LRM publishes none of them: dynamic load rating, static load rating, allowable moments, running parallelism and maximum speed. We confirm the load figures for this specific model before you order - just ask through the RFQ.
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 LRM12N2X220S10CH
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.