Airtac LRM Miniature Linear Guide LRM12L1X120S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X120S10CHT 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 lengthLong carriage
- Carriages1
- 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 LRM12L1X120S10CHT
LRM12L1X120S10CHT is the bottom-mount version of this complete set. The trailing T in the code means the fixing holes are counterbored so the 12 mm rail bolts to its seat from underneath - the right choice when the top face is a working surface, or when screw heads above the datum face would foul the machine. Rail length is 120 mm, end holes sit 10 mm from the ends, and one long recirculating-ball carriage arrives assembled on the stainless rail.
A long block spreads load over more balls and stretches the bearing span, useful on vertical or overhung axes. Preload C gives the most rigid LRM running fit, at the cost of more running resistance and a seat that must be ground or finish-milled. The balls are Japanese-made and graded ISO 3290 G10, held in place by a ball-retention design; a double-lip seal scrapes oil and shuts out dust while the outer cover protects the seal strip. Keep ambient temperature at or below 80 C, peaks to 100 C. LRM carries no published load or moment ratings - RFQ us with your load and we will confirm the figure for this model. One handling note for vertical installs: on an inclined rail the manufacturer warns the carriage can slide off under its own weight, so hold it during fitting.
Airtac LRM Miniature Linear Guide LRM12L1X120S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X120S10CHT |
|---|---|
| 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 | 1 |
| 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 LRM12L1X120S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X120 | 1 carriage 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, 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 LRM12L1X120S10CHT Is Used
Microscope focus axis
Bottom-mount fixing lets the rail sit inside a focus tower with no screw heads above the datum surface, keeping the optical path clear.
Vertical Z slide on a dispensing head
On a vertical axis the long carriage steadies the tipping from an overhung nozzle, and the ball-retention design helps the block stay intact during service.
Cable-drawn inspection camera
A borescope carrier drawn along a 120 mm rail records weld seams; high accuracy H keeps the image track steady frame to frame.
Is the Airtac LRM Miniature Linear Guide LRM12L1X120S10CHT the Right Guide?
Because LRM has no published load, moment or parallelism figures, confirm capacity with us before you commit - include the load, orientation and any overhang in the RFQ and we will check the model for you. When the load is heavy or cantilevered, the honest upgrade is LSH, which publishes the dynamic, static and moment ratings per carriage that LRM does not. For short strokes needing crossed-roller stiffness, compare LGC.
This code specifies: a complete set (rail plus carriage), one long block, 12 mm rail width, 120 mm rail, medium preload C, high accuracy H and bottom-mount fixing through counterbored holes. Bottom-mount means the seat is machined and reached from below - verify your frame has the clearance. Preload C raises running resistance, and the seat must be ground or finish-milled to hold rated travel accuracy. For a replacement carriage alone, our carriage-only stock is thin, so plan a special order matched to the original.
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 LRM12L1X120S10CHT FAQ
It is a complete set: 12 mm rail, 120 mm long, one long carriage, preload C (medium), accuracy H (high), bottom-mount rail. Mounting torque: M3 screws 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium; M2 screws 58.8, 39.2 and 29.4 N.cm respectively. Keep ambient temperature at or below 80 C, peaks 100 C. Grease is Kyodo Yushi PS No.2, topped up every 100 km or every 3 to 6 months. Note that LRM publishes no load, moment or running-parallelism figures - ask us and we confirm the rating for this model.
One assembled set: the 120 mm bottom-mount stainless rail with its single long carriage already fitted, preload C and accuracy H as coded. There is no second carriage, no rail-only section and no mounting screws in the box - order fixings to the torque figures above. If you later need a spare carriage alone, note that the ball-retention design helps but does not guarantee balls stay in during a swap: fit square and slow, ideally on a dummy rail, and expect a special order since carriage-only stock is thin.
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 LRM12L1X120S10CHT
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.