Airtac LRM Miniature Linear Guide LRM12L2X120S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X120S10CHT 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 length120 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 LRM12L2X120S10CHT
In this set the screws come up from below: the LRM12L2X120S10CHT is a 120 mm stainless-steel rail, 12 mm wide, with two long, medium-preload (C) carriages at grade H accuracy, and mounting holes spaced 10 mm from each end. Nothing screws down from the top face.
That underside fixing suits frames where the rail top must stay flush, so a sliding deck passes over it without catching on screw heads. Inside the long carriages, Japanese-made ISO 3290 G10 balls - a ball-grade reference, not a standard for the guide - run on a common-rail LRM profile behind a double-lip seal, with an outer cover shielding the seal strip. The 80 C ambient ceiling, with 100 C transients, is the one published environmental figure, so keep heat sources clear of the rail. Re-greasing falls due every 100 km of travel or every 3 to 6 months, whichever comes first - and on a short stroke the distance arrives sooner than you might expect. Load capacity is confirmed per model: send the RFQ and we will confirm the figures for this exact set.
Airtac LRM Miniature Linear Guide LRM12L2X120S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X120S10CHT |
|---|---|
| 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 | 120 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 | 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 LRM12L2X120S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X120 | 2 carriages on a 120 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, 120 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 LRM12L2X120S10CHT Is Used
Semiconductor tray loader
The bottom-mount rail sits flush in a compact loader frame, and preload C holds the tray carrier steady at each indexing stop.
Coordinate measuring fixture
Two long carriages under a light touch probe give a stiffer feel for repeated touch-off on small measured parts.
Lens turret slide
A medium preload keeps the lens carrier from drifting when the machine stops, while grade H accuracy holds the optical axis.
Is the Airtac LRM Miniature Linear Guide LRM12L2X120S10CHT the Right Guide?
With the fixing under the rail, check early that your base plate can be drilled from above while the rail is held in place - the datum face can be either side of the rail, and with two carriages keeping the datum on the same side improves running accuracy. If the job carries a substantial or overhung load, move to LSH, which publishes the dynamic, static and moment ratings LRM omits; LRM figures are confirmed per model with us. Short travel needing crossed-roller rigidity points to LGC. Checklist: complete set, 12 mm rail, long carriage, two blocks, 120 mm length, preload C (stiff, and less forgiving of alignment), accuracy H, bottom-mount direction, and confirm the load rating with us before committing.
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 LRM12L2X120S10CHT FAQ
Rail width 12 mm, rail length 120 mm, two long carriages on one rail, preload grade C (medium), accuracy grade H, and a bottom-mount rail so the screws sit underneath. Fix with M3 screws at 196 N.cm into steel, 127 N.cm into cast iron or 98 N.cm into aluminium, and keep the ambient at or below 80 C with peaks no higher than 100 C. Lubrication is due every 100 km of travel or every 3 to 6 months. Note that load and moment ratings are not published for LRM; we confirm them per model - ask through the RFQ and we will confirm this exact set.
The rule is every 100 km of travel or every 3 to 6 months, whichever comes first - and on this short rail the distance can bind first. A 200 mm stroke cycling once per second covers 100 km in about three weeks of continuous running. Top up through the lubrication hole at the rear of each long carriage: stroke it back and forth, inject from one side, then check for an even film on the rail. Never mix lubricants of different types, and wipe off the rust-preventive oil before first use.
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 LRM12L2X120S10CHT
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.