Airtac LRM Miniature Linear Guide LRM12L2X220S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X220S10CPT 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 length220 mm
- AccuracyP — precision 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 LRM12L2X220S10CPT
This is a complete LRM12 miniature linear guide set: one stainless-steel rail, 220 mm long and 12 mm wide, carrying two long recirculating-ball carriages. The trailing T in the code means the rail mounts from below, so the fixing screws are driven upward through a support ledge and cannot be reached from above. Preload is grade C, the medium grade, and accuracy is P, the precision grade.
Preload C is the stiffest option in the LRM range and the least forgiving: it raises rolling resistance and demands a well-finished seating, so grind or finish-mill the mounting face before fitting. The long carriage spreads its recirculating-ball contact over a greater length, which helps any tipping component in the machine. Inside every carriage, the balls are Japanese-made ISO 3290 G10 grade - a grade for the balls alone, not an accuracy class for the guide. A double-lip seal scrapes oil and excludes dust, an outer cover shields the seal strip, and ball retention keeps the balls in place during handling, though angled insertion can still drop them. Ambient temperature must stay at or below 80 C, with brief peaks to 100 C. Load and moment ratings are not published for LRM; tell us your duty and we will confirm the figures for this exact model before you order.
Airtac LRM Miniature Linear Guide LRM12L2X220S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X220S10CPT |
|---|---|
| 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 | 220 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L2X220S10CPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long 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. |
| P | P — precision 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 LRM12L2X220S10CPT Is Used
Compact dispensing gantry
A benchtop fluid-dispensing gantry on a PCB assembly line, where medium preload limits deflection at the nozzle and the bottom-mount rail hides fixings under a narrow baseplate.
Optical alignment slide
A lens-alignment slide in a photonics assembly cell: precision P grade keeps travel straight for focusing optics, and medium preload firms the carriage without stepping up to a heavier guide.
Laboratory autosampler bridge
A sample-transfer bridge over a microplate deck in an analytical lab; the long carriages resist tipping as the arm reaches across, and the 80 C ambient limit suits a bench kept clear of heated modules.
Is the Airtac LRM Miniature Linear Guide LRM12L2X220S10CPT the Right Guide?
Step up to AirTAC LSH when the load is substantial or cantilevered: LSH publishes per-carriage dynamic, static and moment ratings you can size against, which LRM does not. Step across to LGC when travel is short and the job needs the rigidity of crossed rollers. Match on every point: complete-set form, 12 mm rail width, long carriage, two carriages, 220 mm rail length, preload C with its trade-off in mind - stiffness bought at the cost of drag and tolerance to alignment error - precision P accuracy, bottom-mount direction, and a confirmed load rating from us before you commit. Size 12 dominates the listed LRM range, which makes this the safest width to design a new machine around.
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 LRM12L2X220S10CPT FAQ
Rail width 12 mm, rail length 220 mm, two long carriages, medium preload (grade C), precision accuracy (grade P), bottom-mount rail fixing. M3 screws torque to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium, into a ground or finish-milled face. Ambient temperature limit is 80 C with brief peaks to 100 C, and re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them per model on request.
Choose LRM for a tight envelope and light-duty precision travel: the 12 mm rail and long carriages fit compact machines that a larger guide cannot. Choose LSH when you need published per-carriage dynamic, static and moment ratings to calculate against - LRM publishes none of these, so its figures are confirmed per model instead. For short travel needing crossed-roller rigidity, LGC is the third option. Send us the duty details and we will confirm the load figures for this exact set.
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 LRM12L2X220S10CPT
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.